﻿CONTENTS 



Page 



Department Bulletin No. 1386. — Some Panicle Characters of 

 Sorgo: 



Introduction 1 



Review of the literature 3 



Characters useful in classifying and identifying types and varieties.- 7 



Description of the plant 8 



Vegetative portion 8 



The infloresence '. 9 



Characters of the vegetative parts 10 



Characters of the panicle 10 



The peduncle • 11 



Contrasted panicle characters 11 



Length, furrowing, and color of the axis 13 



Pubescence of the axis 14 



Branches of the panicles 14 



Pubescence of the branches 15 



The fertile spikelet 15 



The sterile spikelet 25 



Varietal groups 28 



Descriptions of varieties 30 



Effuse group 30 



Contracted group 32 



Compact group ^ 34 



Literature cited 36 



Department Bulletin No. 1387. — Experiments in Rice Culture at 

 THE Biggs Rice Field Station in California: 



Introduction 1 



Environmental condition s 3 



Soil 3 



Temperature 3 



Rainfall 4 



Wind 5 



Evaporation 6 



Experiments on the control of water grass and its varieties 7 



Methods used . 7 



Experiments on immediate submergence after seeding . 7 



Comparison of air and water temperatures 11 



Experiments on submergence immediately after the rice has 



emerged . 12 



Spring plowing and disking of stubble land compared 14 



Experiments on rate of seeding and method of irrigation 16- 



Experiments on seed-bed preparation 18 



Rate-of-seeding experiments 19 



Effect of variety 19 



Yield data 20 



Effect of continuous cropping on rice yields 21 



Varietal experiments 23 



Classes of rice 23 



Varieties grown on tenth-acre plats 24 



Varieties grown on small increase plats 28 



Varieties following green-manure crops in 1924 29 



Nursery experiments 30 



Summary 36 



Department Bulletin No. 1388. — Faiim Management Problems on 

 Irrigated Farms in Hay and Potato Areas of the Yakima Valley, 

 Wash.: 



Summary of results 2 



Location and description of area 3 



Agricultural history of area 6 



Markets and marketing ijroblenis 11 



A business analysis of presf^nt farming in Yakima County 16 



Selection anrl [iroduction of crops 28 



Selection and prorj notion of livestock 46 



Principles governing clioicc of crops and livestock 50 



Application of principles discussed 64 



