The ranch operator must submit to the county committee in writing the designation of the deferred grazing acreage prior to the initiation of the practice. This practice is not applicable to range land in the ranching unit which normally is not used for grazing.

The area deferred from grazing must be kept free of livestock during the deferred grazing period, and the ranch operator must carry out practices under such conditions or specifications as shall be established by the county committee with the approval of the State committee as are needed in the interest of range conservation.

The range land not in the deferred grazing area must not be pastured to such an extent as will decrease the stand of grass or injure the forage, tree growth, or watershed.

(b) Supplemental practices required by the county committeePayment, 35 percent of the range-building allowance. If deferred grazing is carried out on less than 25 percent of the range land in the ranching unit, only a proportionate amount may be earned by carrying out these supplemental practices. The payment shall not exceed the value of such supplemental practices, which values shall be established by the State committee based on recommendations of the county committee.

To be eligible for this payment, or a portion thereof, the ranch operator must defer a portion of the range land in the ranching unit from grazing and, in addition, must comply with such other practices and specifications not listed for payment in this bulletin, which have been recommended by the county committee and approved by the State committee, where the county committee determines such additional practices are needed in the interest of range conservation.

2. Artificial reseeding OF DEPLETED RANGE LAND-Payment, 20 cents per pound of seed sown, but not in excess of $2 per acre: Good seed of adapted varieties of range grasses, legumes, or forage shrubs must be used and the range land properly prepared previous to seeding by mowing, contour listing, or by such other methods as are approved by the county committee as being good practices for such land.

Satisfactory documentary evidence must be submitted to the county committee regarding performance under this practice.

3. Artificial sodding OF DEPLETED RANGE LAND-Payment, $3 per

acre:

The resodding must be done with adapted varieties of range grasses and in a manner to provide a minimum of one sod piece or original clump of grass for each 28 square feet of pasture land sodded. At least 60 percent of the grass sodded must be growing at the time of checking performance.

EROSION AND RUN-OFF CONTROL

4. Contour listing, furrowing, and chiseling:

(a) Furrows with 60 square inches cross section and not less than 5 inches deep constructed with dams at intervals of 12 feet-Payment, 2 cents per 100 linear feet.

(b) Furrows with 60 square inches cross section and not less than 5 inches deep without dams-Payment, 2 cents per 100 linear feet.

(c) Furrows, with a minimum of 32 square inches cross section and not less than 4 inches deep, or chiseling not less than 8 inches deep-Payment, 11⁄2 cents per 100 linear feet.

Guide lines for this practice must be run at one-half the terrace interval, and all furrows must be spaced not less than 7 feet apart.

5. Contour ridging OF RANGE LAND-Payment, 712 cents per 100 linear feet:

Ridges or narrow terraces must be at least 3 feet wide from the low point in upper or lower channel to the top of the ridge, at least 15 inches high above the low point in the upper channel, and spaced not more than 1/3 of the maximum terrace interval. Ridges may be pushed from either the upper or the lower side or from both sides. Ridges must not empty directly into gullies but should be blocked at the ends or turned uphill before crossing gullies. Guide lines must be run for each ridge.

6. Spreader dams and terraces:

(a) For constructing spreader dams-Payment, 15 cents per cubic yard for material moved in building the dams.

(b) For constructing spreader terraces-Payment, 50 cents per 100 linear feet. Spreader dams and spreader terraces may be constructed alone or in combination with each other for the diversion of surface water to prevent soil-washing of range land. Such dams and terraces must be accurately laid off and checked with a standard farm level or surveyor's instrument. Dams, with the exception of spillways, must be constructed in accordance with specifications required under practice number 7.

DEVELOPMENT OF STOCK WATER ON RANGE LAND

7. Earthern tanks or reservoirs-Payment, 15 cents per cubic var. of material moved, not in excess of 5,000 cubic yards; except that 10 cents per cubic yard will be paid for material moved in excess of 5,000 cubic yards for each tank or reservoir and 72 cents per cubic yard for excavating dirt necessary in con structing reservoirs but not used in the construction of a da

Reservoirs or earthen tanks must be constructed with spillways adequate to prevent dams from washing out. Dams shall be con structed in accordance with approved specifications issued by the State committee. Prior to construction, the site for such dam mus be inspected and a preliminary survey made by a representativ designated by the county committee. After a dam site is definitely decided on, it is required that a profile be made and platted ar benchmarks and reference points be established.

Where it is determined by the county committee that a dam alread constructed does not constitute a suitable watering place for livestock and that the enlargement of said dams will contribute to the effects tion of the purposes of the program, payment will be made at the same rate and under the same specifications as apply to the constru tion of earthen dams and reservoirs.

8. Concrete or rubble-masonry dams-Payment, $6 per cul yard. The construction of concrete or rubble-masonry dam will be approved only on rough or broken range land wher earthen dams or reservoirs are impracticable and where there is no possibility of using the water stored by such masonry

dam for irrigation purposes. Dams must be constructed in accordance with specifications issued by the State committee. After a dam site is definitely decided on, it is required that a profile be made and platted and benchmarks and reference points be established.

9. Drilling or digging wells:

(a) Wells with casing not less than 4 inches in diameter-Payment, $2 per linear foot.

(b) Wells with casing less than 4 inches but not less than 2 inches in diameter-Payment, $1 per linear foot.

Drilling or digging wells will be approved only for the purpose of better distribution of watering places for livestock on range land, thus preventing erosion caused by trampling out of grass by livestock going long distances to water, and by overcrowding at one place. Such wells must be sufficiently cased to prevent caving. The ranchman is required to erect at his expense a windmill or power pump, together with adequate pumping equipment and water tanks. Payment will not be made for a well developed at or near ranch headquarters. A dry hole will not qualify for payment. An artesian well will qualify for payment at $1 per linear foot if suitable stock water is made available during the grazing season and adequate watering places are provided.

10. Development of natural watering places FOR RANGE LIVESTOCK : (a) Where excavation is in soil or gravel-Payment, 30 cents per cubic foot. (b) Where excavation is in rock-Payment, 50 cents per cubic foot.

In developing springs or seeps by excavating, at least sufficient material must be excavated at applicable rates to amount to $20. The minimum payment for the development of one spring or seep shall be $20 and the maximum shall be $100.

The springs or seeps must be walled up with concrete or masonry; the source must be protected from trampling by adequate fencing, and the water conveyed through a trough or a pipe not less than one inch in diameter to a tank of at least 20 cubic feet capacity for the purpose of providing water for range livestock.

PLANTING AND MAINTAINING A STAND OF TREES

11. Tree planting-Payment, $7.50 per acre.

Trees must be planted on range land in 1940 prior to November 1. The number, kind, variety, and age of trees planted and methods of planting and growing must be in accordance with approved specifications issued by the State committee. The acreage planted to trees must be fenced and the fence maintained sufficiently to prevent the entry of livestock. Trees purchased from a Clark-McNary Cooperative State Nursery are not deemed to be paid for in whole or in part by a State or Federal agency and may qualify under this practice.

CONSERVATION

OF RANGE LANDS THROUGH THE ELIMINATION OF
DESTRUCTIVE PLANTS

12. Eliminating prickly pear and cactus:

(a) Light infestation, 2 percent to 6 percent, inclusive-Payment, 50 cents per

acre.

(b) Medium infestation, 7 percent to 12 percent, inclusive-Payment, 75 cents per acre.

(c) Heavy infestation, above 12 percent-Payment, $1 per acre.

Payment will be based on the percentage of ground infested. Where infestation is less than 2 percent, coverage will be calculated by counting 2 or more acres as 1, according to the relative facts found by the range inspector and approved by the county committee.

13. Eliminating mesquite:

(a) Light infestation, 5 percent to 20 percent, inclusive, Payment, 50 cents per acre.

(b) Medium infestation, 21 percent to 40 percent, inclusive—Payment, $1 per (c) Heavy infestation, above 40 percent-Payment, $2 per acre.

acre.

Payment will be based on the percentage of ground infested. Where infestation is less than 5 percent, coverage will be calculated by counting 2 or more acres as 1, according to the relative facts found by the range inspector and approved by the county committee.

14. Eliminating cedar:

(a) Light infestation, 5 percent to 15 percent, inclusive-Payment, 75 cents per acre.

(b) Medium infestation, 16 percent to 30 percent, inclusive-Payment, $1 per (c) Heavy infestation, above 30 percent-Payment, $1.50 per acre.

acre.

Payment will be based on the percentage of ground infested. Where infestation is less than 5 percent, coverage will be calculated by counting 2 or more acres as 1, according to the relative facts found by the range inspector and approved by the county committee.

15. Eliminating lechuguilla-Payment, 50 cents per acre:

Payment will be based on the percentage of ground infested. This payment will be made for eliminating infestations above 2 percent. Where infestation is 2 percent or less, coverage will be calculated by counting 2 or more acres as 1, according to the relative facts found by the range inspector and approved by the county committee.

NOTE. The degree of infestation of destructive plants as outlined in practices Nos. 12, 13, 14, and 15 will be determined by judging the density of the growths and grading them in accordance with the percentage of the ground covered by the total spread of trees or plants, as estimated by the range inspector. In order to make an accurate estimate as to the percentage of coverage of such plants, the range inspector should step off a representative tenth or twentieth of an acre of infested area and measure the ground covered by all the trees and plants under consideration that are on the area. From this he can determine the percentage of coverage on such plot or plots, then use this percentage as a basis for arriving at the percentage of the entire infested area.

16. Destruction of noxious plants BY MOWING-Payment, 25 cents per acre per mowing:

Payment will not be made if the plants mowed are used for hay or sold for any purpose, nor for mowing a greater number of times than the county committee, with the approval of the State committee. finds is necessary for destruction of the noxious plants.