University of Arizona College of Agriculture 



Agricultural Experiment Station 





Thirtieth Annual Report 



For the Year Ended June 30, 1919 



(With subsequent items) 



Consisting of reports relating to 



Administration 



Agricultural Chemistry, Agronomy, Animal Husbandry, 



Botany, Dairy Husbandry, Entomology, Horticulture, 



Irrigation Investigations, Plant Breeding, 



Poultry Husbandry 



Tucson, Arizona, December 31, 1919 



