Arizona Ai.KicrLTrRAL 1^xim:kimi:ni' Station 407 



to livestock and farm management, to the range industry, to irri- 

 gated soils, and to major crops grown witliin the region. 



Of necessity the work of the Station, in order to be effective, 

 must be concentrated upon a comparatively limited number of 

 projects at anv one time inasmuch as a limited personnel cannot 

 safely undertake too great a range of subjects for fear of ineffect- 

 ively dissipating its energies. 



By reason of the unusually distinct set of conditions confront- 

 ing Arizona workers, there is perha]is comparaiivcly little likeli- 

 hood of duplicating the work of other stations, although there is of 

 course excellent reasons for a selection of subjects in order to avoid 

 duplicating the efforts of other agencies operating in the same 

 field. Following, therefore, is a list of active projects at the present 

 time : 



1<> r>i)- 



1. Cniuiiilwater studies along the lower Santri Cruz river, includin.!. 

 servations on recharge of groundwaters front floods; and t1uctuati<His of tlie 

 water ta1)le under influence of recharge and pumping. 



.A.dams and vState funds. Ct. E. P. Smith. 



2. A study of pumping machinery to determine fundamental facts relating 

 to the action and etificiency of irrigation pumps from the standpoint of hydraulics 

 and of mechanics. Adams and vState funds. G. E. P. S.mith 



3. The production by plant breeding metliods of a superior variety of alfalfa 

 free, if possible, from the hairiness and the stemmy character of Peruvian. 

 Methods of determining tlic water requirements of different varieties of alfalfa ; 

 and the liiological analysis of alfalfa into its hereditary units with manipulation 

 of these units in constructive breeding, is within the scope of tliis study. 



.-\dams and State fmids. G. E. ErERman and 



W. E. Bry.\n. 



4. The hybridization and selccti(Mi for Arizona conditions of a "superior 

 grain sorghum, combining if possible the following characters,— large upright 

 head, uniform ripening, upriglit stalks, dwarf halut, carliness, Icahness. drought 

 resistance and large individual grains. 



State funds. G. E. ErKEman, and 



W. E. Bryan. 



5. A piiysiological and biological study of Southwestern varieties of Indian 

 corn to determine heat and drought resistant characters; and biological analysis 

 of tliese corns with a view to the use of hereditary characters in constructive 

 plant breeding operations. 



Adams and State funds. ".. E. ErkEman. and 



W. E. Bryan. 



6. The biological analysis of the genus phascolus (common lieans) and tlie 

 improvement of varieties of beans by selective breeding. This project includes 

 the improvement of tepary beans, especially well adapted to climatic conditions 

 of the region. Adams and State funds G. E. ErEEman and 



W. E. Bryan. 



7. A study and comparison of durum, poulard and bread wheats with bio- 

 logical analyses, and constructive breeding operations for tlie purpose of devel- 

 oping a bread wheat which will retain its hardness under Southwestern condi- 

 tions Adams and State funds. G. E. Erkemax an<l 



W. E. Bryan. 



