6 DEPARTMENT OP AGRICULTURE BULLETINS 101-125. 



Department Bulletin 116. — New Facts Concerning the White-pine 



Blister Rust: Page. 



Introduction 1 



The situation at Geneva 1 



New outbreaks 2 



Seriousness of the disease 3 



Can this disease winter over on ribes 4 



Cultivated versus wild ribes 5 



Pinus excelsa a host 6 



Age of diseased white-pine trees 6 



Distribution of spores of Cronartium ribicola 6 



General results of inspections 7 



Department Bulletin 117.— Profits in Farming of Irrigated Areas in 

 Utah Lake Valley: 



Introduction 1 



Description of the region 2 



Soils of the region 2 



History of agricultural development 3 



Profits in farming in this region 5 



Crops grown in Utah Lake Valley 13 



Strawberry Valley irrigation project 19 



Farm organization 19 



Summary 20 



Department Bulletin 118.— Experiments in the Destruction of Fly 

 Larvae in Horse Manure: 



Introduction 1 



Historical 1 



Manure: Its role in fly breeding 2 



General plan of experimental work 3 



General account of chemicals used 8 



Advantages and cost of borax 22 



Effects of borax-treated manure on plants 22 



Summary 23 



Literature cited 26 



Department Bulletin 119. — -Five Oriental Species of Beans: 



Introduction 1 



The adsuki bean T . . 3 



The rice bean 13 



The mung bean, green gram, or golden gram 16 



The urd, or black gram 26 



The moth bean 28 



Chemical analyses 29 



Literature cited 31 



Oepartment Bulletin 120. — Apple Powdery Mildew and its Control in 

 the Pajaro Valley: 



Introduction 1 



Climatic conditions of the Pajaro Valley 3 



Bearing of climatic conditions on the spraying problem 4 



Apple powdery mildew 5 



Susceptibility of varieties 10 



Spraying experiments 10 



Preparation of the iron-sulphid mixture 15 



Importance of early spraying 16 



Spraying for apple scab 17 



General formula for the spray mixture 17 



Spraying schedule 17 



Spraying methods 19 



Winter spraying for stimulation 20 



Pruning 22 



Conclusions 24 



Summary of control methods 26 



