28 



MISC. PUBLICATION 99 2, U.S. DEPT. OF AGRICULTURE 



Table 3. — Average number of plants per square foot in 1956 from 

 seeding 6 povnds of grass seed per acre by different methods of seeding 

 on plowed and burned seedbeds at 8 locations in southern Idaho in 

 November 1954 



Species and seeding method 



Plants per square foot on- 



Plowed seedbed 



Nonpelleted 

 seed 



Pelleted 

 seed 



Burned seedbed 



Nonpelleted 

 seed 



Pelleted 

 seed 



Crested wheatgrass: 



Drilled 



Hand broadcast 



Airplane broadcast.. 



Intermediate wheatgrass: 



Drilled 



Hand broadcast 



Airplane broadcast.. 



Number 

 1. 4 

 . 5 

 . 3 



2.0 

 . 4 

 . 4 



Number 



0) 

 0. 4 

 . 4 



0) 



Number 

 0. 6 

 . 1 

 



. 1 

 

 



Number 



0) 



0) 



1 No treatment. 



The counts of 2-year-old plants and the yields from 7-year-old 

 plants show plainly the advantage of plowing and drilling in producing 

 a good stand of seeded grass. 



COSTS 



Major items of cost in aerial pellet seeding are (1) seed, (2) pelleting 

 material, (3) pellet manufacture, (4) seeding by airplane, and (5) 

 supervision. Per acre costs of seeding large areas with pelleted seed, 

 and results of the seeding, are shown in table 4. 



Table 4. — Costs and results on 16 large-scale pellet seedings l 



COMPRESSED 



EARTHEN PELLETS 





Location and seeding date 



Cost 



Moisture at time of 



Results 





per acre 



seeding 





Papago Indian Reservation, Ari- 



$2. 32 



Favorable 



Failure. 



zona, 1946. 









San Carlos Indian Reservation, 



2. 00 



do 



Do. 



Arizona, 1946. 









Hopi Indian Reservation, Arizona, 



2. 10 



do 



Do. 



1946-47. 









Navajo Indian Reservation, Ari- 



2. 42 



do 



Do. 



zona and New Mexico, 1947-48. 









Thorn Creek, Idaho, 1947-48 



2. 56 



Normal 



Unsatisfactory. 



Muskrat Creek, Wyoming, 1947-48. 



2. 33 



do 



Failure. 



Golliher Mountain, Nevada, 1948. _ 



3. 25 



Favorable _ 



Do. 



Manti-LaSal National Forest, 



2. 42 



do 



Unsatisfactory. 



Utah, 1948. 









Skull Valley, Utah, 1948 



3. 52 



Above normal. .. 



Failure. 



See footnote at end of table. 



