CONTENTS O 



Page 



Department Bulletin No. 1281. — Relative Utilization of Energy 

 in Milk Production and Body Increase of Dairy Cows — Contd. 



Heat emission 20 



Heat production 22 



Net energy of feed for body gain and milk production 24 



"Drying up" period 28 



Effect of advanced lactation 30 



Standing and lying 30 



Summary 32 



Literature cited 33 



Appendix 34 



Department Bulletin No. 1282. — Almond Varieties in the United 

 States: 



Early attempts at almond growing in the United States 1 



Almond-growing districts in California , 2 



The relation of varieties to the industry 3 



Method of investigations 8 



General considerations 9 



Explanation of terms 10 



Key to almond varieties based upon the characteristics of the nut 15 



Commercial almonds grown in the United States 20 



Almond varieties not well known or not grown commercially in the 



United States 136 



Index of varieties 141 



Department Bulletin No. 1283. — The Marketing and Distribution 

 of American-Grown Bermuda Onions: 



Extent of the onion industry 1 



Commercial producing areas 3 



Varieties of Bermuda onions 5 



Seasonal production and shipments 5 



Distribution of shipments 9 



Methods of sale 22 



Shippers' margins, transportation charges, and producers' receipts 



compared 25 



Bermuda onion prices from 1916 to 1923 29 



Factors influencing wholesale prices of Bermuda onions 37 



Conclusions 52 



United States grades for Bermuda onions 54 



Department Bulletin No. 1284. — Sorghum Smuts and Varietal 

 Resistance in Sorghums: 



Introduction 1 



Smuts attacking sorghums 2 



Covered kernel smut 3 



Loose kernel smut : 5 



Head smut 7 



Sorghum smuts not known to occur in the United States 10 



Classification of the sorghums 12 



Location of the experiments 12 



Methods employed in the varietal studies 13 



Inoculation experiments with covered kernel smut 14 



Results with shallu 14 



Results with sorgos and grass sorghums 15 



Results with broomcorn 20 



Results with kaoliang 22 



Results with kafir 25 



Results with durra _ 29 



Results with milo and feterita 31 



Results with miscellaneous sorghums 35 



Inoculation experiments with head smut 40 



Experiments with milo and feterita with reference to their resistance 



t o Spliacdolheca sorghi 41 



Germination studies on various sorghums 43 



Influence of external conditions on kernel smut infection 44 



General conclusions 49 



Bibliography 51 



