﻿CONTENTS / 



Page 

 Department Bulletin No. 1365. — Development of Flowers and 

 Bolls of Pima and Acala Cotton in Relation to Branching: 



Introduction 1 



Procedure in taking field notes 2 



Production of sc^uares and bolls on Pima and Acala plants 2 



Determining periods of square and boll development 7 



Development of squares on specific nodes of fruiting branches 7 



Square and boll records for specific nodes of fruiting branches borne 



by main stalks 10 



Square and boll records for specific nodes of fruiting branches borne 



by vegetative limbs 16 



Shedding of squares from specific nodes of fruiting branches 18 



Boll shedding from specific nodes of fruiting branches 21 



Development of bolls on specific nodes of fruiting branches 22 



Boll periods affected by fruit on preceding nodes 24 



Practical application of the data to cotton growing 25 



Summary 25 



Literature cited 27 



Department Bulletin No. 1366. — Check List of Diseases of Eco- 

 nomic Plants in the United States: 



Basis and scope of the list 2 



Host names 2 



Names of pathogens 3 



Common names of diseases 5 



Distribution 5 



Geographic areas specified in this list, with abbreviations 6 



List of authorities 7 



List of diseases 11 



Index to common names of hosts 109 



Department Bulletin No. 1367.— Coloring Citrus Fruit in Florida: 



Experimental work 3 



Relation of temperature to rate of coloring 6 



Importance of coloring quickly.^ 8 



Methods of regulating temperatures in coloring rooms 8 



Effect of coloring on the fruit 11 



The coloring plant 14 



Coloring with ethylene 18 



Discussion 18 



Department Bulletin No. 1368. — Cold Storage of Florida Grape- 

 fruit: 



Experimental work 2 



First experiment 2 



Second experiment 3 



Third experiment 4 



General discussion 5 



Department Bulletin No. 1369. — The Cattle Grubs or Ox War- 

 bles, Their Biologies and Suggestions for Control: 



History 2 



Life history in brief 6 



Distribution... 6 



Economic importance 11 



Injury to man 17 



Common names and popular ideas 19 



Hosts 20 



Actions of cattle when attacked by adult Hypoderma 24 



Description of .stages ^ 26 



How the larvae of Hypoderma lineatum gain entrance to the host 33 



Development and habits 41 



Seasf trial history 74 



Natural control ----' - 7*^ 



Artificial control. . . 85 



PoHHibilities of eradication by systematic destruction of grubs 108 



Legislation on grub control 110 



Summary 110 



Literature cited 114 



