VI DEPARTMENT OF AGRICULTURE BULS. 1001-1025. 



Department Bulletin No. 1013. — The Influence of Relative Humidity 

 and Moisture Content of Wheat on Milling Yields and Moisture 



Content of Flour — Continued. Page. 



Influence of relative humidity on moisture content of flour 8 



Comparison of the influence of relative humidity and of moisture content 



of flour 9 



Influence of atmospheric temperature on the total yield of mill products. . . 10 



Summary 11 



Department Bulletin No. 1014. — Effect of Date of Seeding on Ger- 

 mination, and Development of Corn: 



Commonly observed effects of date of seeding 1 



State experiments 1 



Experiments at the Arlington Experimental Farm 3 



Results obtained 8 



Effects on germination 8 



Effects on height and rate of growth 8 



Effects on development 9 



Correlation of effects 9 



Summary 11 



Department Bulletin No. 1015. — Development of Wilt-resistant Toma- 

 toes: 



Prevalence and characteristics of tomato wilt..-. 1 



Development of resistant varieties $ 



Selection of material 3- 



Preparation of the breeding plats 4 



Method of selection 4 



Varietal resistance 5 



Intravarietal variation 8 



Behavior of selections 8 



Behavior of resistant varieties 9 



Effect of continuous selection 9 



Duration of resistance 10 



Results of field tests 11 



Origin and description of wilt-resistant varieties 15 



Summary 17 



Department Bulletin No. 1016. — Bionomics of the Chinch Bug: 



Introduction 1 



Seasonal history in South Carolina 2 



Behavior 3 



Mating 3 



Life history of the chinch bug 4 



Description of the egg and nymphal instars 10 



Sexual differences among adults 13 



A parasite of the adult 14 



Department Bulletin No. 1017. — Report on Drainage and Prevention 

 of Overflow in the Valley of the Red River of the North: 



Introduction : 1 



Summary of recommendations 2 



Red River Valley 3 



Surveys and other investigations 11 



Run-off 18 



The flood situation 49 



Recommended plan of drainage 59 



Oragnization 86 



Conclusions 87 



Acknowledgment 89 



Department Bulletin No. 1018. — Water-stress Behavior of Pima Cotton 

 in Arizona: 



Scope of the investigations 1 



Location and plan of the experiements 2 



Adaptation and length of the development period 4 



Water-stress behavior 6 



Water relations and the shedding of immature bolls 11 



