HomeMy WebLinkAbout830380.tiff ORDINANCE NO. 108
AR1924760
PERMIT NO. 7a -/3.
PERM T F R PLOWING GRASSLAN A----e-11/. 341,0
APPLICANT NA y�-`- �� ` " � ,
ADDRESS: c-
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LEGAL DESCRIPTION OF PROPERTY TO BE CULTIVATED (Map delineating `'
' the proposed land use change attached) : a -
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SW4 and 37 ac. in S? 5' NW4, Section 9 , T11N, R58W zx,
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APPROVED SOIL CONSERVATION PLAN ATTACHED. 4-7 7
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PERMIT ISSUED BY THE CLERK TO THE BOARD OF COUNTY COMMISSIONERS 2^ "•
OF WELD COUNTY, COLORADO. _NO
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and Weld ounty Clerk & Recorder z v
_/ Mand Clerk to the Board m-:
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This permlrt is issued pursuant to Weld County Ordinance No. 108
adopted by the Weld County Board of County Commissioners
on May 19, 1982 , and requiring the issuance of permits for
the plowout and cultivation of grassland. Pursuant to Ordi-
nance No . 108, the landowner is required to follow a conserva-
tion plan approved by the local Conservation District Board.
The landowner is advised to contact the local Soil Conserva-
tion District Board for any amendments or updates to the
Conservation Plan.
RECORDERS MEMORANDUM 8303PC
THE TIME of RECORDATION, THIS IN-
ST y 'A,DEQUATE
STRUMENT WAS FOUND TO FL,i .,,CDU Cf10N j9/.//
FORTIS FE F FH-TO f{Q _ Y �� 5�g3
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Township ( ./ -_ , Range ,
Coun .4:477.1_...._._,State_ ....Z.) .,
ORDINANCE NO. 108
PERMIT NO. S-_; --13.
D 0994 I:I:::(:' 01924760 t•)4i'::',,,'f:i3 14 : 19 $0 ,00 2/034
F 1441 MARY ANN 1 FEk_ti:::F S'TI::::I:(4 CLERK & RECORDER WELD CO,, CO
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4... - I FORM 5O
West Greeley Soil Conservation District
P.O. Box 86 • Greeley, Colorado 80632
B 0994 R E f:: 01924760 04/26/8J 14 : 19 $0,00 9/034
F:' 1448 MARY ANN f•I:::E.iI:::ft T TN CLERK & RECORDER WELD CO, CO
RESOURCE OR LAND USE PLAN REVIEW
NAME: Jerry E. Anderson
LEGAL DESCRIPTION: SW4 and 37 ac. in S1 S1 NW-14 Section 9, T11N, R58W
DATE OF REVIEW: March 29, 1983 .
ACREAGE BY LAND USE: Irrigated Pasture & Hayland - 122 ac.
Non-irrigated Pasture & Hayland -- 36 ac.
Irrigated Cropland - 27 ac.
Otherland(farmstead) - 12 ac.
54 ac_ of grassland to be broken up
PLAN DISPOSITION: Approved as presented
COMMENTS:
West Greeley Soil Conservation District Board
By; t i' i 3 c cl
•
CONSERVAr1ON [)EVELOPMFNT • SFI.I •GOVERNMENT
U.S.DEPARTMENT OF AGRICULTURE SCS-CPA-68
SOIL CONSERVATION SERVICE 1 -82
RECORD OF COOPERATOR'S DECISIONS
AND PROGRESS IN APPLICATION
D 0994 REC 01 924 760 04/26/83 14 : 19 $0.00 1 0/034
F 1 449 MARY ANN FEUERSTEIN CLERK & RECORDER WEL.1) CO, CO
PLANNED APPLIED
FIELD MONTH LAND USE AND TREATMENT
NO. AMOUNT YEAR AND
YEAR
CONSERVATION TREATMENT UNIT #1
Irrigated Pasture & Hayland
Field 3 - 122 ac.
3 122 ac. 1983 Cover Crop:
A small grain crop will be established to provide
a residue cover for planting grass.
3 122 ac. 1984 Pasture & Hayland Planting:
A mixture of Luna Pubescent Wheatgrass and Alfalfa
will be planted and established. (See attached
recommendation)
3 122 ac. 1984 Pasture & Hayland Management:
Grasses will be managed for hay production. Cutting
will be done when grasses are in boot to early
bloom for high quality forage. Stubble height will
be maintained at a 3 inch minimum and allowed to
reach 5 inches going into winter.
3 122 ac. 1984 Irrigation Water Management:
Irrigation water will be applied by center pivot
sprinkler at a rate to provide approximately
17 inches of net irrigation water through the season.
3 1 1983 Irrigation System, Sprinkler
A center pivot sprinkler will be installed.
3 1 1983 Pumping Plant for Water Control:
A pump will be installed in irrigation well of
adequate size and capacity to supply irrigation
needs for Center Pivot Sprinkler.
COOPERATOR Jerry Anderson ASSISTED BY Ronalr' Miller � DATE 3/1983
U.S. DEPARTMENT OF AGRICULTURE - SCS-CPA-68
SOIL CONSERVATION SERVICE 1.82
RECORD Of COOPERATORS DECISIONS
AND PROGRESS IN APPLICATION
B 0994 REG 01 924760 04/26/23 14 : 19 $0.00 II /034
E' 1 450 MARY ANN FE:UERS 11.=: I N CLERK & RECORDER WELD CO, CO
PLANNED APPLIED
FIELD MONTH LAND USE AND TREATMENT
NO. AMOUNT YEAR AND
YEAR
CONSERVATION TREATMENT UNIT #2
Nonirrigated Pasture & Hayland
Fields 1,2,5 - 36 ac.
1,2,5 36 ac. 1984 Pasture & Hayland Planting:
Pubescent Wheatgrass will be established.
1,2,5 36 ac. 1985 Pasture & Hayland Management:
Grasses will be used predominantly for hay pro-
duction. Cutting will be done when grass is in
boot to early bloom stage with a minimum stubble
height of 3 inches. Grasses should be allowed to
regrow to 6 inches or greater before grazing.
CONSERVATION TREATMENT UNIT #3
Irrigated Cropland
Field 4 - 27 ac.
4 27 ac. 1983 Conservation Cropping System:
A flexible rotation of small grain, sorghum field
crops will be grown.
4 27 ac. 1983 Crop Residue Management:
All crop residues will be returned to soil surface
to retard erosion. Crop residues will be left on
soil surface during wind erosion season, November
through May each year.
4 27 ac. 1984 Irrigation Water Management:
Irrigation water will be applied by furrows.
Water should be applied at a rate that will not incuce
soil erosion and in quantity to mee the needs of
the crop. Maximum stream size should be 42 gpm.
per furrow and at a rate of approximately 18 inches
of net irrigation per season.
CONSERVATION TREATMENT #4
Other land - Farmstead
Field 6 - 12 ac.
No conservation treatment planned or needed at this
time.
COOPERATOR Jerry Anderson ASSISTED BY Ronald Miller DATE3/1983
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SCS-CONS-16 U.S. DEPARTMENT OF AGRICULTURE
OCTOBER 1974 SOIL CONSERVATION SERVICE
. 41CONSERVATION PLAN MAP
Owner Jerry Anderson Operator Same
County Weld State Colorado Date 3/1933
Approximate acres 197 Approximate scale 3" = 1 mile
Cooperating with West Greeley Conservation District
" Plan identification SCS Agreement #2113 Photo number ASCS Photo FF3
�L g'Y Assisted by Donald D. Miller USDA Soil Conservation Service
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CO-ECS-5 U.S. Department of Agriculture
6/82 Soil Conservation Service
(180-12-11)
PART I - GRASS SEEDING PLANNED
Planner: R. Miller Gate: 3/1983
Producer: Jerry Jerry Anderson
Contract or Agreement /
1, Field No. 3 Ac. 122 Contract Item 14o. N/C Practice r4o. and Name S17_Pasture & Hayland Planting
Land Resource Area 67 irrigated X Dryland Range Site
2. Planned:
Seedbed Prep: (a) Method ESt. cover crop Seeding Operation: (a) Method: drill XX
(b) Approximate dates interseed
(c) Clean tilled broadcast
Firm seedbed
Stubble cover XX (b) Drill spacing 7„ (c) Da'te Aug. . 1983
Interseed TypeDouble (d) planting de;tr. 1/2_3/4"
• Other Disk
Fertilizer:
weed Control:
T rri
Pounds actual per acre Ni `
(available) P2C5 Mowing: XX
Chemical: Type E
Dates:
Mulch:
Kind:
Amount: pounds/AC �.
Now-applied:
How-anchored: a
Anchorage depth:
Seea:
(1) (21
Required PLS rates % of spe=ie5
Variety Species per acre (100%) in mixture
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Luna Pubescent Wheatgrass 14.0 75
Ranger Alfalfa 8.0 25
70 -4D
(3) (4) (5)
CD
PLS seeding rate Total °;S lbs/
per species/Ac. Planned species planner
(1)x(2) Acres (3)x(4) T u
10.5 122 1281 E
2.0 122 244 -
CD
Remarks:
CO-ECS-5 U.S. Department of Agriculture
6/82 Soil Conservation Service
( 180-12-11)
PART I - GRASS SEEDING PLANNED
Planner: R. Miller Gatc.: 3/1983
Producer: Jerry Anderson
Contract or Agreement
1. Field No. 1,35 Ac. 36 Contract Item No. N/C Practice t;o. and Name 512 Pasture & Hayland Planting
Land Resource Area 67 Irrigated Dryland - X Range Site
2. Planned:
Seedbed Prep: (a) Method Seeding Operation: (a) Method: drill XX
(b) Approximate dates interseec
(c) Clean tilled broadcast
Firm seedbed
Stubble cover XX (b) Drill spacing 7" (c) Date Fall - 1983
Inter seed TypeDouble (d) plantin, de;:tr.1/2-3/4«
Other Disk
Fertilizer: -17
weed Control: ''
Pounds actual per acre 1,42
(available) P 5 Mowing: XX " -0
krl
1K Chemical: _ Type d Amon-1:
Dates:
rrl
Mulch: 77
Kind: 7.>Z
Amount: pounds/Ac
Hon-applied: _
How-anchored: 0 (-
Anchorage depth: _
Seed:
(1) (2
Required PLS rates % of spe:;es
Variety Species per acre ( 100%) in mixture
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Luna Pubescent Wheatgrass 9.0 _ 100 —
73
77.
(3) (4) (5)
PLS seeding rate Total PLS lbs/
T
per species/Ac. Plannec species planned
(1)x(2) Acres (3)x(4)
9.0 36 324 ti
0ss
Remarks: Seeding to be made in corners around center pivoL sprinkler-field 3.
UNITED STATES DEPARTMENT OF AGRICULTURE
Soil Conservation Service y�
Colorado
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STANDARDS AND SPECIFICATIONS T•
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COVER AND GREEN MANURE CROP (Code 340) T
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Standard F' Cr-
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Definition f
A crop of close-growing grasses, legumes, or small grain used primarily
for seasonal protection and soil improvement. It usually is grown for z
1 year or less, except where there is permanent cover as in orchards. ;: om
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Purpose
To control erosion during periods when the major crops do not furnish
adequate cover; add organic material to the soil; and improve infiltra-
tion, aeration, and tilth. H
Where applicable m
On cropland; certain recreation and wildlife land; and orchard, vineyard, g
and small fruit areas. `=
Specifications n
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1. Any adapted close-growing crop or mixture of crops can be used. 0
A
2. The crop will not be burned. If harvested or grazed, at least 2,000
pounds of residue will be left on irrigated land or 1,500 pounds on
non-irrigated land.
3. Work unit specifications will also list:
a. Adapted cover and green manure crops and varieties. ,r Q o'
b. Dates and rates of seeding cc �,�/'/'�,`Lrx f. .°+( /uC-&c
c. Any other requirements for satisfactory application of this prac-
tice.
April 15, 1971
v0444
-
U.S. DEPARTMENT OF AGRICULTURE
Soil Conservation Service
COLORADO-ALL FIELD OFFICES atR` R»
i A Section IV
March, 1978
STANDARDS AND SPECIFICATIONS
for
Pasture and Hayland Management (Code 510) Lame
Standard
kpirrx
Definition: Proper treatment and use of pastureland. —
Purpose: To prolong life of desirable forage species; to maintain or -�
improve the quality and quantity of forage; and to .g protect the soil, v; y
and reduce water loss.
z 71.1
Where applicable: On all pasture and hayland. { "
Planning Considerations z c
I. Fertilization
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A. Fertilize to meet the needs of the plants or the economic r.
objective of the producer. o
B. Specific fertilizer recommendations should be based on soil z
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or tissue analysis. General recommendations can be made using n w
the following guidance:
year
Lbs. 1/ Lbs. 2/ ' Lbs. 3/ h
Species N/ton P205/ton K20/ton
lJ ti
Cool season grass 30 10 50
Grass-legume 25 15 60 0
;. loins
Forage sorghums 40 15 60
Alfalfa 6 other 15 50 F' %' q'
properly innoculated � y
legumes
1/ Org-nic matter is a major key to estimating available nitrogen. Moun-
tain regions of Colorado are high in organic matter, but decomposition is
extremely slow because of low temperatures. Soils of the eastern slopes o u ft
are low in organic matter, but decomposition is rapid. This indicates
that most pasture and haylands of Colorado will respond to nitrogen in y i
proportion to the amount applied.
2/ In general, laboratory soil tests indicate adequate available phos-
phorus for medium to high tonage of grass production. For grass-legume '
mixtures or solid legume stands, a good response from P205 should occur.
Lrak3/ Unless a laboratory soil analysis indicates the need for K20, this
element should not be recommended due to the abundance of available
potassium present in most of the Colorado soils.
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C. Nitrogen should be applied in split applications for improved .a
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efficiency. ......4...,
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II. Rotation Grazing m
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A. Grazing units should be approximately equal in size. Small -z --- L
pastures may be grouped to form a grazing unit within a system. D --'•
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B. The grazing-recovery period should not exceed 30 days for -- i3:•::?
optimum forage quality. v
C. When forage is grazed down to the minimum recommended height,
cattle should be moved. - -b
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D. Clip uneven growth down to the recommended height to prevent
spot grazing. - 1n
E. A one herd-tl,ree unit system furnishes a simple but adequate ;.
grazing system. Grazing 7-10 days and resting 14-20 days is .
a good rule of thumb. 7., .4.1
III. Other Management Considerations
A. Hay harvest should be based on the stage of growth. Continuous rn
cutting at an immature stage will cause the stand to deteriorate
prematurely due to a continuous reduction of food reserves in £ o #i:::s;'
the roots.
B. Varying the ratio of nitrogen and phosphorus fertilizer can C-1 3 rh"
• be used to manipulate the ratio of grasses and legumes. - N
Ill
C. Stocking rates vary with climate, soil, type of forage, avail-
able moisture, and degree of management. Observation and
local experience are the best guides for determining stocking
rates but the following can be used for guidance: ;,;,;;:.
1. Approximately 1 AUM per 1000 lbs. of air cured forage % '
produced. 10Zz
2. Non-irrigated pasture in Colorado (average year) produces
from 1500 - 3500 lbs. per acre.
3. Irrigated pastures produce from 4000 - 16,000 lbs. per
acre depending on climate and management.
Low
prt
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Specifications f (' `
Lsri I. Minimum Grazing or Cutting Heights
A. Pastureland •
Minimum Height Prior Minimum Height During
Species to beginning, grazing growing season
(inches) (inches)
Maintenance 1/ Optimum 2/ Maintenance 1/ Optimum 2/
Alkali Sacaton • 5 8 3 5
Brome, smooth 5 8 3 4
Fescue, Meadow 5 8 3 5
Fescue, Tall 5 8 3 5 . — ril
Fescue, Hard 4 5 2 4
Foxtail, creeping meadow 5 10 3 * • •
Kentucky bluegrass 3 5 2 4 •b '''
Indiangrass 12 18 6 10 Z 2
Orchard rass D
8 5 8 3 5 T :;
Red top 4 6 3 4 -(
Reed canarygrass 12 18 4 6 D -,
Russian wildrye 4 6 3 5 z 5
Sideoats grama 4 5 2 4 -r ti Lais
Switchgrass 12 18 8 10 - !
Timothy 4 6 2 4 •-• ,
+
Sedge, Nebraska 3 5 2 4 c •
le Wheatgrass 5 8 3 5 -, ( dr;
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Siberian, Pubescent —
We .tern, Intermediate •e, ,
Slender •
rmA
Wheatgrass Crested 4 6 2 4
Wheatgrass, Tall 8 12 5 8 .'
at
Cicer Milkvetch 6 10 3 4 ..
..
Alfalfa 6 10 3 4
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1/These heights will allow maintenance of the stand. —
?)These heights will provide maximum yields when other plant requirements are z
met. Co
B. Hayland
Growth stage for Minimum cutting oal
Species quality hay heights 0
no;
a Js
Alfalfa Early bloom stage 3" OS
Grass-Legume When grass is in boot- 3" ::
stage or legume in
• early bloom
Tall grasses Boot stage 4"
Mid-Grasses Boot stage 3"
c.,,/ The last cutting should be timed to allow for a two to four week regrowth
period before the average first killing frost.
E :
0"4"r
C. Pastures for special use: 40441 «
wa++
Grasses such as Crested wheatgrass and Pubescent wheatgrass are
commonly used for early spring grazing until other forage is
available. Realizing that production on the pasture will be _
reduced, acceptable management can be accomplished by heavy .t> -43
grazing for short 4t g g periods during the spring, followed by defer-
ment the remainder of the year. During the grazing period, ==
sufficient growth should be left to protect the soil from wind r
and water erosion. This provision will be restricted to apply "
between April 1st and June 1st . ct
z
Id. Required Management Considerations >.v
m v.
A. Observe recommended grazing heights shown in item I of these
specifications. � v
B. Practice weed control if weeds are significantly inhibiting m ';
the growth of desirable species. z +,
1. Chemical - Colorado Weed Control Handbook will be used —
for recommendations.
2. Mechanical - Mow or shred weeds when they become signi- x
ficantly taller than the desirable plants. Do not shred zig
O
shorter than minimum recommended harvesting heights.
C. Livestock water will he available in each grazing unit.
:mom
D. Rotation grazing is required on irrigated pastures unless � r
the use is for early spring grazing, fall grazing or other MO
"Special use" acceptable to the designated technician.
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Technical Guide
Section IV
July 1 , 1974
UNITED STATES DEPARTMENT OF AGRICULTURE
Soil Conservation Service
Colorado
Standard and Specifications
PASTURE AND HAYLAND PLANTING -
(Code 512)
Standard
Definition r
Establishing and re-establishing long-term stands of adapted species
of perennial , biennial , or reseeding forage plants. (Includes Pastu •,
and Hayland Renovation. Does not include Grassed Waterway or Outlet z
on cropland. )
Purpose `'
To reduce erosion, to produce high quality forage, and to adjust land
use. D`
Where applicable
On existing pasture and hayland or on land that is converted from
other uses.
Specifications
1 . Seedbed preparation a
Irrigated sites a:
A. Seedbed should be smooth and firm. It should be relatively f
free of weeds and other plants that may interfere with stand
establishment and crop production. rl .$
B. Seeding may be on bare ground or in• weed-free stubble. Seeding `
into stubble is an ideal seedbed and is especially well adapted o ;;
for slopes where erosion from irrigation may be a problem.
C. Companion crops may be recommended if needed to control
erosion until pasture and hayland planting is established.
(However, discretion must be exercised in recommending a
companion crop. The seeding rate is often too high and crop
management often favors harvest of the companion crop, rather
than stand establishment of the pasture and hayland planting. )
Page 1 of 5
Non-Irrigated sites nl 13,
A. Select one of the following methods: (Listed in order of
preference. ) -0
1 . Pre ared se dbed - applicable where wind and water a .T
eros on azar s slight. - T
Cl
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2. Existin stubble - stubble of a previous small grain or 1:: ;'.
f
sorghum crop. t should be relatively free of waeds and
volunteer grain. _ e•
3. Cover crop - An annual crop, usually millet, seeded Fel T
purpose of temporarily stabilizing field. Millet shoU s 0
be mowed if necessary to prevent seed production. -,
4. Annual weeds - This type of seedbed should be limited to z
eastern Colorado where erosion hazards are extremely high.
T
2. Seeding
Seeding should be done with equipment capable of properly seeding T
the selected species. m
3. Fertilizer application T
Most plantings should be fertilized at time of seeding and on an r=
annual basis as needed. Recommendations should be based on results E
of soil test. If these are not available, base recommendation on
experience and/or local data.
4. Selection of species urce Area A. Select attacheddchart.apted spSelection shouldecies for the vbe based en Land Rono adaptation ftomsit(
intended use of planting and on adequacy for erosion control .
B. Species and varieties may be added with approval of State
Agronomist. •
, ed to ated
C. If a
sitessincaes is givendLandnated as ResourceArea,athetspeciesris9usually
adapted to the entire Area.
D. Item 4c above is usually not applicable when species are
recommended for non-irrigated sites in a given Land Resource
Area. Species adaptation on non-irrigated sites is much
more critical . See Standard & Specifications for "Critical
Area Plantings", or other references, if specific information
is needed for species on non-irrigated sites.
E. Pure stands of grass(es) or legume(s) or mixtures of grass(es)
and legume(s) qualify for pasture and hayland plantings.
(See Item 4f below)
Page 2 of 5
F. If the purpose of pasture and hayland planting constitutes
a change in land use from cultivated crops to permanent
vegetative cover, the seeding mixture must contain not
less than twenty-five (25) percent, by weight, perennial
grasses. ,J
5. Rate of seeding Alt /d y4, C� �n� %°i� X ' #�7, A
f a1/24
6. Time of seeding - A
Date of seeding will be at the discretion of the Field Office -b
personnel . There are few limitations for irrigated plantings. y c
Non-irrigated plantings should generally be made immediately
zr
prior to anticipated periods of precipitation, or during late :,
fall or early winter, so that germination will occur in the
spring.
7. Management (for establishment) .
A. Harvest or grazing during initial growing season will not ` c
be permitted.
C
B. Control weeds and seed production from volunteer small ti
grain and cover crops. Mowing at a height of 10 to 12
inches at the appropriate time is usually a very effective
control . Herbicides are recommended for weed control in rt. w
grass seedings. (See Colorado Weed Control Handbook for information on herbicides. )
Ti
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Page 3 of 5
(
Perennial G And Lega l
For Pasture And Wayland Plantings
In Colorado
-- IRRIGATED IRRIGATED ---
Recanded Land %mere, Areas Land Resource Areas
Species Varieties
jf.Q�f 77 47 N !♦_d N] 61,ff 72.72 11 3f 7L J7 47 A6,49'.I 67 69 7017y n_
GRASSES
Fairway wheatgrass
ropyron cristatum XXXXXAMIA J
I
Thickspike wheatgrass X! X
gropyron dasystachyum Critana . AA A
fI CO
[.rested wheatgrass
A rn ron deserto rum nondan , . , , X M X X % M x X xI X
f Tall wheatgrass Jolla 1 1 % 1 % 1 1 % X % X, j X j, X X X X 1 X 1 X r1. ti
A re ron elongatum Larao 1 1 II-1 X X, 1 A X. 4,._ yi 7U b-
X I X X I, X I X X I I XXX XI
Intermediate wheatgrass Myr _ , X r
Agropyron lnternmdtum a.ha r _ X_ lr X 74 D '—
99 Western wheatgrass Arr be X" X X -+; ^_
A ro ron smithil rt _ _ X � 1 X X X X X X 1 X,
ROOM , X X. _ -,
Pubescent wheatgrass LYni A X I I I X. A x X Mk X X,
A1ropyron trichophorum Tyr - _
kedtoc _ D,
Ayrost's aloe I I I 8 K X X X !, I X a
Creeping footed i'
Alopecurus arundiMC',us Garrison , a A M 4 X A $ X , C, a
Big bluestem
Andropo on gerardll Ku >< b b I X A
v
Sand bluestem �' _ J(. % X X
Sando 0 on hallii r l. I X A` A X % _
y L 1 1 M M x
Smooth aroma AAtt cn ...ttt ! f' I i X A Y X
Bromus 1nermis i Z 3 y a 1 r l r F
�ijj{{�aea ]f { s a L P t X .., '
Orchard grass L/far- 1` Z 1� g X A X. 4 $ 1 7y , . II X I T �'
Dart ifs tomerata te ae _ g x X X `l
rn
Russian une
El us Lnceusceus Y1 M11 X % ( X X % X % X, X A % A _
Sand lovegrass
Eraarostls trichodes Neer 27 X X X X £ v
Swltchgrass y1y�rr 2�fG j I I XI X X X 711 0
—
►anicum vlraatum Mille ' b A Z A' I I 1( X A V
Reed canarygrass % i'-.3►%lark arundinacaL 1 X A IL X. A. A, IL X 6 a - V
. , \
Timothy • v
Phlegm'ratans', X 4 1 1 { S LA . . Xv K X} -; v
Indiangrass )11p' I I a L I r R 'Y I Sorahastrum matins Relt
Alkali sacaton
Sooroaolus 'insides • IL 4, X X X I X X I I X I I I 1
?age 4 of 0
Permit' Grosses And Legal
For Posture Red W➢lend Pleating'
• In Colorado
IRRIGATED NDN•IRRIGATEQ
Recolnolnrd Land Resource Areas Land Resource Areas
Species . Varieties — -
34$ x 37 47 M 49 51 97 Si 79 JZfL14 35,34 37 47 48 49451 67 69 70 7i 77
LEGUMES
:icer milkvetch LutaM X X X X X T ''
Astraealus cleat _
Blydsfoot trefoil % X X X X X X % "' w
Lotus corniculatus — ' ' ' et, `O
Alfalfa rim
x X % X X X �' /Ax" . —
MMadiaW satire d X X x x x r % a r_
Mtr x x x �i x x
Virnal x x ,x x ,x 'x, z 1 E. x x .xl X. '
Sainfoin Eski ,��—X '—�-- x - —'
anobrychis vl ciaefolla ResentZ .w
Ze
Strawberry clover % X % X X X X F % -b
Trifollum fraoiferum ., + " '+
Alsike clover XXXXXXXX % X m y
Trifolium hybridum .,
Red clover % X % % % % % % % x• I --1 —i 0
Trifolium pretense r-
white clover
l ' rn
Trifolium resells Ladino X X �R %, X X X X 6-:
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Page 5'0 5
K.
Irrigation Water Management 499-1
m y
IRRIGATION WATER MANAGEMENT
Technical Guide
Section IV -
Statewide 3 -;
Where quality of irrigation water is a D. 2
STANDARD problem then the method and unformity
of application and adequate leaching T
Definition of the root zone must be emphasized.
Determining and controlling the rate, An appropriate conservation irrigation E.::: 0
amount and timing or irrigation water system, including adequate water -44,
rn
applied to soil to supply crop water measuring devices , must be used.
needs in a planned effective and Applicable systems include sprinklers z
efficient manner. - portable or fixed-in-place, trickle n7 04
systems , or surface systems
Purpose established on the land to be '?
irrigated. —
To effectively utilize the available a ..
irrigation water supply in managing The irrigator shall follow basic 'cl
and controlling the soil moisture irrigation principles in managing and :^_
environment of crops to promote one appling water so that the above stated
or more of the following: to achieve purpose can reasonably he attained. u ey
desired crop response; to minimize These principles are: r
soil erosion and loss of plant
nutrients; to control undesirable 1 . Determine when and how much water
water loss, or to protect water is needed for each irrigation based on a
quality. soil moisture depletion within the 0p,
root zone and on crop water-use rates
Conditions Where Practice Applies for the current stage of plant growth.
r; c
oa
This practice is applicable to all 2. Compute the required duration of
cropland having an adequate and re- water delivery to the irrigated area
liable water supply of suitable so only the required amount of water
quality, and that can be irrigated is applied plus the necessary minimum
without causing erosion in excess of leaching.
"T" values. Localized conditions
will require placing emphasis on the 3. Determine the optimum set time
different principles of irrigation needed for the soil to absorb the
water management. Achieving uniform- required amout of water.
ity of application and minimizing
deep percolation must be emphasized 4. Adjust the stream size, the size
in locations where salinity control of set, and/or the length of run and
is needed. In such locations appli- application rate as necessary to
cation efficiency is of secondary improve uniformity and efficiency of
importance. Where groundwater application.
depletion is a major concern then
efficiency and uniformity of applica-
tion and irrigation scheduling must
be emphasized.
SCS, Colorado, January 1983
1
B 0994 RFC 01924760 04/26,'93 1 .4 : 19 $0 .00 26/034
F 146'5 MARY ANN FEVER. rEIN CLERK & RECORDER WEL1? CO, CO
1..rrlgnl: Lun Wnii' M,Ohlgemnnl 499-2 - -
5. Check soil moisture content and The timing or scheduling of irrigation
depth of penetration within two days shall conform with soil moisture
following irrigation by surface requirements to optimize production,
systems to determine the uniformity or to optimize returns to the farmer
of water application. where irrigation pumping or other
costs are high.
6. Prevent erosion caused by irriga-
tion and/or tailwater runoff. Water shall be applied at a rate and
in such a manner that when combined
7. Minimize the amount of deep with appropriate crop management
percolation and tailwater runoff from practices, it will not contribute
the irrigated area. toward annual soil erosion in excess
of "T" values or toward deep percola-
Additionally, and as incentive to tion in excess of 15 percent of the
strive for irrigation water net application in salainity control
management, the irrigator needs to areas.
understand that excessive irrigation
adversely affects crop yields just as In lieu of an actual evaluation at
does insufficient irrigation. In each irrigation, evidence that the
water short situations, the irrigator physical layout of the irrigated area
should learn the stages of plant meets the requirements of a
growth when irrigation is critical to conservation system plus the
crop yield, and save the irrigation technician's documented evaluation of
water for those stages when possible. the irrigator's knowledge and use of
He should strive to optimize water the principles of water management is
application in order to optimize crop acceptable in determining good water
yield or net return. management is being practiced.
SPECIFICATIONS
'Plan Irr'I µal I,nl onto, nunur p,rmrsi plan
shall he rruuMl Mluul with purpose ul'
this standard.
The amount of water needed for each
irrigation shall he determined by
evaluating soil moisture depletion.
Soil moisture depletion may be evalu—
ated using hand methods, tensio—
meters, or daily evapotranspiration
rates.
Irrigation water shall he measured
onto the field as the product of
measured flow rate times time of set.
and shall be applied using an accep—
table irrigation method.
SCS, Colorado, January 1983
trerr
MPS-1
Technical Guide
Section IV
SOIL CONSERVATION SERVICE _
Engineering Standard and Specifications No. Colo--'a9•
IRRIGATION SYSTEM, SPRINKLER11
STANDARD 3• "*'•
Definition r;
A planned irrigation system where all necessary facilities have been installed for the ef-
ficient application of water for irrigation by means of perforated pipes or nozzles operated ._
under pressure.
—
Z
Purpose &
Sprinkler irrigation systems are installed to apply irrigation water efficiently and uniform- C
ly in order to maintain soil moisture within the range for optimum plant growth, without ex- ;-
cessive water loss, erosion or reduction in water quality. V, ,,
Conditions Where Practice Applies
Sprinkler irrigation plans shall he based on an evaluation of the site and the expected oper- z w.
ating conditions. The soils and topography shall be suitable for irrigation for the proposed
crops. Ro
Enough good quality water shall be available for the practical irrigation of the crops to be r-
grown.
The sprinkler method of water application is adaptable to most crops except rice, to most J-
irrigable lands, and to most climatic conditions where irrigated agriculture is feasible. It
is not adapted to areas where extremely high temperatures and high wind velocities prevail.
T
Design Criteria C,
71 '4:-
Depth of Application v
The net depth of application shall be based on the available moisture-holding capacity of the
soil within the root-zone depth of the crop irrigated. The gross depth shall be determined 7
by using field application efficiencies consistent with the conservation use of water re-
sources. ..
mac ity Requirements C
In regularly irrigated areas, sprinkler irrigation systems shall have a design peak capacity Y
adequate to meet the moisture demands of each and all crops to be irrigated within the design
area. In computing capacity requirements, allowance must he made for reasonable water losses
during application periods.
Systems for special-purpose irrigation shall have the capacity to apply a stated amount of
water to the design area in a specified net operating period.
Des i-gn Application_`Rate
The design rate of application shall be within a range established by the minimum practical
application rate under local climatic conditions and the maximum rate consistent with the in-
take rate of the soil. Where two or more sets of conditions are found in the design area,
the lowest maximum application rate for areas of significant size will apply.
Distribution Patterns_and Spaci�Aeguirements
A combination of sprinkler spacing, nozzle sizes, and operating pressure shall be selected
that will most nearly provide the design application rate and distribution. Prevailing wind
velocities and other unfavorable operating conditions also must be considered.
Where available from the manufacturers, uniformity coefficient data shall be used to select
sprinkler spacing, nozzle sizes, and operating pressure. In such cases, the uniformity co-
efficient shall he not less than 85 percent.
(More) 1/1/72
T. G. Notice #66, 1/1/72
4/s/
sky2
In the absence of such data, sprinkler performance tables provided by the manufacturers shall be
used to select the nozzle sizes, operating pressure, and wetted diameter for the required
sprinkler discharge. The maximum spacing shall comply with the following criteria:
1. For low intermediate, and moderate-pressure sprinklers, the spacing along lateral
lines (°1) shall not exceed 50 percent of the wetted diameter as given in the menu-
. facturer's performance tables when the sprinkler is operating under optimum pressure.
The spacing of laterals along the main line (Sm) shall pot exceed 65 percent of this
wetted diameter. Where wind can be expected, spacing ('m) shall be reduced to 50 per
cent for average velocities of 5 miles per hour and to 30 percent for average velocities
greater than 10 miles per hour.
2. For high-pressure sprinklers and for the giant hydraulic type, the maximum (diagonal)
distance between two sprinklers on adjacent lateral lines shall not exceed two-thirds
"
of the wetted diameter under favorable operating conditions. Where wind can be ex-
pected, the diagonal spacing shall be reduced to 50 percent of the wetted diameter for _
average velocities of 5 miles per hour and to 30 percent for average velocities greater .« 'v
than 10 miles per hour. •"
For perforated pipe lines, the spacing recommendations of the manufacturer for the design appli- ?_
cation rate, number and size of perforations and operating pressure shall be followed.
Lateral Lines ..`
y
Lateral lines shall be so designed that the total pressure variation at the sprinkler heads, due Z +0+
both':friction head and static head, will not exceed 20 percent of the design operating pressure NJ
of the sprinklers.
rn v
Sprinkler Discharge Riser Length
rr
•
ERE inches
Under 10 6
10 to 25 9
25 to 50 12
50 to 120 18 CD OD
Over 120 36 rw
m
Main Lines
Hain lines, submains, and supply lines shall be designed so as to convey the quantities of water ' .•
required to all lateral lines at the maximum required pressure.
P:
m
Where the pressure required for sprinkler system operation is provided by pumping, main line pipe f
sizes shall be so selected that an economical balance between the capitalized cost of the nine w
and annual pumping costs will result.
Pump and Power Unit
The pump capacity and the power unit shall be adequate to operate the sprinkler system efficient- .>.
ly when maximum capacity is being pumped against maximum total dynamic head.
SPECIFICATIONS
w w
Design and layout shall be in keeping with SCS Engineering Standard No. Colo-443 IRRIGATION
SYSTEM, SPRINKLER, and with good engineering practice. ;• 'x
1/1/72
Pumping Plant for Water Control 533-1
PUMPING PLANT FOR WATER CONTROL Technical Guide
0,
Section IV
Statewide
Definition _ x
: t
A pumping facility installed to equipment shall be determined from w�transfer water for a conservation appropriate technical studies . The
need, including removing excess size and number of pumps and their r
surface or ground water; filling performance requirements shall be =t `.
ponds, ditches or wetlands; or determined on the basis of the conser-
pumping from wells, ponds, streams vation requirements of the system. z and other sources. The total head shall be determined for :6 '
critical operating conditions, taking a,
Purpose into account all hydraulic losses. t= 0
Automatic controls shall be included To provide a dependable water source in the plans as required.
or disposal facility for water man-
agement on wetlands or to provide a Power units. The power units z a
water supply for such purposes as shall be selected on the basis of N
irrigation, livestock, or wildlife. costs, operating conditions, conserva- N
tion needs, and objectives, including
Conditions where practice applies need for automation. The power unit -.
shall he matched to the pump and be 2` "
ihenever water must be pumped to capable of operating the pump effect- 7;
accomplish a conservation objective. ively within the range of operating
m
It is especially applicable for main- conditions. The horsepower require- n
taming critical water levels in meats, pump efficiency, and total head
existing swamps , marshes, or open on the pump shall be computed as T
water and for providing water sources covered in Chapter 8, Section 15, SCS £ ..
for newly constructed wetlands and National Engineering Handbook, "Irri-
ponds. gation Pumping Plants; " Chapter 7 of
ei
NEH 16 "Drainage of Agricultural ,v
Design criteria Land; " or USDA Technical Bulletin No. L.73 ,-!-:
1008, "Design and Operation of Drain-The efficiency of units, type of age Pumping Plants ." r7 :.x
Power, quality of buildin g, automa-
tion, o
and accessories installed, Suction and discharge pipes. The
shall be in keeping with the value size of suction and discharge
pipe
and importance of the system, and shall be based on studies of efficcien-
shall accomplish the conservation and cies and effects on costs and opera—
tions. The arrangement and length of
environmental objectives. Require—
ments for pump drainage are in Sec- discharge pipe shall be based on the
tion 16 of the National Engineering need for recovery of head through
Handbook. Requirements for irriga- syphonic action, and for delivery of
tion pumping are in Section 15 of the water in keeping with conservation and
National Engineering Handbook. environmental objectives. Gates,
valves, pipe connections, discharge
Pump requirements. The capaci- bays, and other protective works shall
:ies, range of operating lifts, and be installed, as needed, for satisfac-
general class and efficiency of tory plant operation.
Colorado, SCS, January 1982
533-2 Pumping Plant for Water Control
Building and accessories. The Plans and specifications
design of the plant and associated
housing, if required, shall consider Plans and specifications for construe-
the need for protecting equipment ting pumping plants for water control
from the elements , malicious damage, shall be in keeping with this standard
and fire and the need for equipment and shall describe the requirements
maintenance and repairs. The appear- for properly installing the practice
ance of the plant shall be in keeping to achieve its intended purpose.
with its surrounding environment and
its importance or value. Construction specifications
The foundations shall be designed to The completed work shall conform to
safely support the loads imposed. the lines, grades and elevations shown
Sheet piling or other measures shall on the plans or layout as nearly as
be used, as required, to prevent pip- can be achieved by competent work,
ing beneath the foundation. shall be workmanlike, and shall
present a good appearance.
Pumps may be mounted in the open, on
piling, or in a well or pit.
Suction bays (or sumps) shall be
designed to conform to the hydraulic
characteristics established by the
pump manufacturer.
The discharge bay or connection with a ,.'r'
distribution system shall be ample to — . 1
meet hydraulic and structural re-
quirements . Provisions for repair or D. "
removal of pumps and engines shall be
provided. Trash racks shall be pro-
vided, as needed, to exclude debris
and trash from the pump.
All structural features and equipment
shall provide adequate safety
z �
features to protect workers and the
public against injury. n `"
x
ei rn 7
J
2,
T
V
Colorado, SCS, January 1982
x
UNITED STATES DEPARTMENT OF AGRICULTURE
Soil Conservation Service Technical Guide
Colorado Section IV
All Field Offices
October 1981
STANDARDS AND SPECIFICATIONS
CROP RESIDUE USE - (ac.) 344
Definition B. Each field will be evaluated for
potential wind and water erosion Using plant residues to protect using the Wind Erosion Curves and - W
cultivated fields during critical the Universal Soil Loss Equation. a o
erosion periods.
C. If only one of the erosion
Purpose hazards a 77
(wind or water) is signifi— _, 7
fn
To conserve soil moisture, increase cant, the land treatment will be
planned so that erosion from neither "
soil infiltration, reduce soil loss, wind nor water will exceed the x c
and improve soil tilth. designated "T" value for that soil.
z1
Condition wherepractice applies 71 --J pP D. If both wind and water erosion r �^.
are significant in a given field, z
On land where crop residues are land treatment shall be planned so v. 0
produced. that the total soil loss from wind N
and water does not exceed the desi " 7,
Specifications nated "T" value. g N
n DC
I. Non-Irrigated Small Grain — Use E. If the treatment is planned to
the "Guide for Wind Erosion Control control wind erosion the technician ^
on Cropland" or Agronomy Note #53 will record (1) the amount of for guidance on amounts of residue residue required on the soil surface 7: .0
required on the soil surface during at planting time, (2) the unshel—
the critical wind erosion season. tered distance usually described as This will normally be considered as field width perpendicular to the 77
the amount of flat small grain prevailing winds, (3) rough-
= a
stubble equivalent residue after the ness factor, i.e. , unridged,
sc
0.
planting operation. £
o
A. To calculate residue require- F. If the treatment is planned
primarily to control water erosion,
ments, average the annual soil loss the technician will develop alterna- `i
for the entire rotation or wheat- tives in accordance
fallow cropping system. This method Universal Soil Loss Equation for (1) r
will show the benefits of residue length of slope (2) cropping
management for the entire cropping management factor and (3) erosion
system. If this method is used the control practice factor.
wind erosion curves will determine
the amount of residue needed but in
no case will the minimum requirement
be less than 500 lbs. per acre of
flat small grain stubble equivalent
at planting time.
TGN #178
344-2 Crop Residue Use
G. Planning Considerations
1 . Subsurface tillage equipment such as sweeps, blades and
rodweeders should be used for most tillage operations.
2. Chemical weed control to reduce the number of tillage operations
is beneficial in managing the residue.
3. Reducing field widths is an effective way to reduce the need for
large amounts of crop residue.
4. When inadequate residue is produced the soil surface will be
ridged by chiseling or listing.
II. Non—Irrigated Sorghums
A. Pounds of residue required through the critical wind erosion period
(November-May).
Minimun Required
Crop and Spacing Residue
1. Drilled sorghums on row 750# z
spacing of 20" or less }
JJ
2. Forage sorghum on 100011
20" - 40" rows z
z '.
3. Grain sorghum on 150011 r- v
20" — 40" rows
r
When the above residue requirements are met, the practice will be considered
adequate to hold the soil loss to the acceptable "T" level.
B. Planning Considerations ^.77
1 . The above amounts of residue will be left on the soil surface :; —
through May or until spring seedbed preparation which usually 2 x
occurs in early April. Spring seedbed preparation should result _ -
in a ridged surface for wind erosion protection.
2. When inadequate residue is produced the soil surface will be —_
ridged by chiseling or listing. Soils coarser than sandy loam r: *
usually require listing to provide satisfactory surface73 0
roughness.
3. Grazing will be restricted on machine harvested crops when
marginal amounts of residue are produced.
USDA/SCS/Colorado/ 10/81 TGN #178
Crop Residue Use 344-3
III. Irrigated Crops
A. The pounds of residue required on the soil surface during the
critical erosion period are as follows.
Wind Erodibility Drilled Crops
Groups 20" rows or less Row Crops
1 & 2 1500 2500 2 o
3 & 4 1000
1750
5, 6 & 7 750 1000 r
B. Critical Erosion Periods (Modified for Necessary tillage)
z
1. W.E.G. 's 1&2 Sprinkler Irrigated — Maintain the required amounts z
of residue until the planted crop has enoughgrowth to
the soil. g protect
2. Gravity Irrigated Row Crops — Maintain the required amounts of
residue as long as feasible after harvest. The cropping system ,:; a
and method of irrigation are to be considered. If fall plowing
destroys the residue, the field will be left rough and cloddy
rn
until spring seedbed preparation, (about March 1st as a —
minimum).
z
—
C
� N
� w
N
et>
TGN #178 USDA/SCS/COLORADO/ 10/81
UNITED STATES DEPARTMENT OF AGRICULTURE TECHNICAL GUIDE
Soil Conservation Service Section IV
Colorado April 1977
Standards and Specifications
•
CONSERVATION CROPPING SYSTEM
(Code 328)
Standard
— a .c
Definition r,. "'
ar
� m
Growing crops in combination with needed cultural and management
measures. Cropping systems include rotations that contain grasses
and legumes as well as rotations in which the desired benefits are
achieved without the use of such crops. Z r.
T. ti
Purpose m r,
To improve or maintain good physical condition of the soil ; protect ; .Y
the soil during periods when erosion usually occurs; help control m
weeds , insects , and diseases; and meet the need and desire of farmers r.v
for an economic return. z ti
Where applicable
T
On all cropland and on certain recreation and wildlife land.
Specifications
1 . Dry Cropland
a. A cropping sequence will be applied that will provide adequate
residue for protection from wind and water erosion. s v°
b. Crop residues will be managed in such a way that soil loss is 6
held to an acceptable amount. .n.
as.
c. The Universal Soil -Loss Equation and Wind Erosion Formula will w
be used to determine adequacy of the cropping system. o
2. Irrigated Cropland
a. Soil Condition Rating Indices for Irrigated Crops, Agronomy
Technical Note #52 dated March 1977, will be used to determine the
adequacy of the cropping sequence and soil fertility management.
b. Crop residues will be managed in accordance with Crop Residue
Use Specifications.
Hello