28 



RANGE IMPROVEMENT IN ARIZONA. 



plats are only approximate. It consists of plats 33 to 43 and con- 

 tains nearly 4 acres. The cultivation here was more thorough than 

 in either C or E. The saltbush seed was sown on the uncultivated 

 soil. The ground was then disked north and south and east and west. 

 The grass seed was then sown, after which the entire area was 

 harrowed diagonally. Seed of saltbushes was planted in plats as 

 follows : 



Number of plat. 



Name of forage plant sown. 



Atriplex canescens 



do 



Atriplex sp 



Atriplex canescens 



Atriplex erenicola 



Atriplex nuttallii 



Atriplex volutans 



Atriplex halim aides 



jElymus canadensis 



[Atriplex halimoides 



\Erocoma cuspidata 



[Atriplex sp. 



jBouteloua oligostachya. 

 [Atriplex semibaccata ... 



Seed, native or 

 foreign. 



Tucson, Ariz- 

 Tempe, Ariz . 



do 



Wyoming 



....-do 



do 



do 



(?) 



Australia 



New Mexico . 

 Tempe, Ariz . 



Arizona 



California 



Area of 

 plat. 



Feet. 

 200 by 300 

 200 by 100 

 100 by 100 

 100 by 25 

 100 by 25 

 100 by 25 

 100 by 25 

 100 by 125 



175 by 75 



200 by 200 

 200 by 150 



AREA A. 



Fig. 5.— Diagram of Area A. The figures indi- 

 cate positions of numbered stakes; broken arc, 

 limit of area twice disked before seeding; con- 

 tinuous arcs, ridges approximately 50 feet apart 

 to prevent run off of water. 



consisting of two 



This area, 

 triangular plats, Nos. 76 and 77, 

 contains nearly 3 acres. The 

 north half was twice disked 

 parallel to the north line, the 

 remainder being disked but 

 once. The seed was then sown 

 and covered with a harrow 

 drawn parallel to the railway 

 fence. The seed sown was a 

 mixture of various remnants 

 from other plats, as follows : 



Plat 76. — Agropyrontenerum, 

 Clitoris elegans, Bouteloua oli- 



gostachya, Sporoholus airoides, 

 Elymus canadensis, Eriocoma 

 cuspidata, Sporoholus cryptan- 



drus, Agropyron occidentale, and Phaseolus rutusus. 

 Plat 77. — Andropogon sacchar aides, Clitoris elegans, and Bouteloua 



oligostachya. 



