CONTENTS 



Pag© 

 Department Bulletin No. 1301. — Report of the Northern Great 

 Plains Field Station for the 10- Year Period, 1913-1922, Inclu- 

 sive: 



Introduction 1 



Climate 2 



Soil 5 



Arboricultural investigations 7 



Experimental test plantings 7 



Cooperative shelter-belt demonstrations 11 



Summary and conclusions 14 



Horticultural investigations 15 



Pomology 16 



Ornamentals and landscape gardening 34 



Olericulture 41 



Agronomic investigations 47 



Rotation and tillage experiments ' 47 



Experiments with forage crops 57 



Varietal tests with corn 63 



Soil-moisture investigations 65 



Investigations with flax and cereals 65 



Cooperative grazing experiment 70 



Plan of the experiment 70 



Gains of the cattle 73 



Study of the native vegetation 75 



Conclusions from the grazing experiment 78 



Department Bulletin No. 1302. — Development and Present Status 

 of Farmers' Cooperative Business Organizations: 



List of tables ii, iii 



Three nation-wide surveys 1 



Cooperation in 1913-191*5 4 



Cooperative sales and purchases in 1919 5 



Cooperation in 1921-1924 5 



Subjects covered by tables 14 



Statistics for 1912-1915 14 



Census survey of 1919 22 



Associations in United States, 1924 25 



Associations in leading States, 1924 28 



Organization characteristics and membership 30 



Amount of business 38 



Date of organization 44 



Collective purchasing 45 



Grain-marketing associations 46 



- Creameries 54 



Fruit and vegetable associations 56 



Associations handling livestock 59 



Cotton, rice, tobacco, and wool associations 63 



Agricultural consumer cooperation 65 



Associations "out of business" 65 



Specific associations 67 



Department Bulletin No. 1303. — The Pecan Nut Casio-Beaker: 



Introduction 1 



1 1 i story 1 



I )i I ribution 2 



Food plants 2 



Character of injury 3 



7SM99G— 28 3 



