554 Thirty-second Annual Report 



HORTICULTURE 

 F. J. Crider, a, F. Kinnison, D. W. Albert 



Dates: A study of the culture and management of date orchards with 

 special reference to propagation and to the improvement of fruit 

 (State). 



Citrus fruits: A study of cultural practices including varietal tests, bud 

 selection studies, methods of pruning, propagation, soil improvement 

 by use of cover crops, time and method of planting, effect of stable 

 manure and commercial fertilizers; and a study of effect of tem- 

 perature and atmospheric humidity (Hatch) (State). 



Olives: This project includes study of sterility, cultural practices such 

 as pruning, irrigation, etc. (Hatch) (State). 



Pruning studies: Effect of different methods of pruning upon deciduous 

 fruits (Hatch). 



Study of the water requirements of fruits (Hatch) (State). 



Walnut and pecan studies: In this project special attention is given to 

 top grafting Juglans major with cultivated varieties (Hatch) (State). 



Irish potato studies: Study of conditionb affecting the production of 

 potatoes in Arizona (Hatch) (State). 



Sweet potato studies: A study of cultural and storage methods (Hatch) 

 (State). 



Spinach: Varietal tests to determine what varieties are most satisfactory 

 as a market garden crop for southern Arizona (State). 



Miscellaneous horticultural studies (Hatch) (State). 



IRRIGATION 

 G. E. P. Smith, W. E. Code, H. C. Schwalen 



Groundwater investigations: Principles of groundwater recharge, move- 

 ment, and escape or use, especially escape through transpiration 

 (Adams) (State). 



Pumping Machinery: A study to determine fundamental facts relating to 

 the action and efficiency of various types (Adams). 



Evaporation and duty of water (Adams). 



Water supplies and irrigation in Cochise County (State). 



PLANT BREEDING 

 W. E. Bryan, E. H. Pressley 



Alfalfa: A study of heritable characters in pure lines of alfalfa (Adams) 



(State). 

 Wheat: Factors controlling milling and baking qualities in wheat. 



(Adams) (State). 

 Corn: Breeding a high yielding, heat resistant field corn (State). 

 Cotton: Selections within the Pima variety in order to improve the 



variety in earliness, percentage of lint, yield, and form of plant. 



Selections from the best short-staple upland varieties in order to 



produce a suitable short-staple variety for those sections of the State 



which seem best adapted to this sort of cotton. (Adams) (State). 

 Beans: The object of this project is to produce an edible field bean which 



can be successfully grown as a summer crop. (Adams) (State). 



PLANT PATHOLOGY 



J. G. Brown 



Date rot: This project consists of inoculation and spraying experiments. 



(Adams). 

 Influence of alkali on the susceptibility of cotton to black arm and angular 



leaf spot. (Adams) (State). 

 Influence of alkali on the susceptibility of cotton to Texas root rot. 



(Adams) (State). 

 Miscellaneous plant disease studies (State). 



