UNITED STATES DEPARTMENT OF AGRICULTURE 
if BULLETIN No. 1111 HWS 
aJy'^mru 
Washington, D. C. 
November 25, 1922 
ONE-VARIETY COTTON COMMUNITIES. 1 
By O. F. Cook. Bionomist in Charge of the Office of Crop Acclimatization and 
Adaptation Investigations, Bureau of Plant Industry. 1 
CONTENTS. 
Page. 
Pure cotton seed a fundamental re- 
quirement 1 
Disadvantages of mixed-variety pro- 
duction 3 
Superior varieties not utilized 6 
Distribution of new varieties inef- 
fective 7 
Deterioration through public gins 11 
Gin-unit communities 13 
Too many cotton varieties , 15 
Renaming varieties of cotton 17 
Community pure seed the best 19 
Different kinds of organization 21 
Progress in organized communities — 24 
Page. 
Classing cotton in the field 26 
Relation of community production to 
diversified farming 28 
Interest in community development- 30 
Community utilization of varieties-- 34 
Pima cotton communities 36 
Meade cotton communities 39 
Durango cotton communities 42 
Acala cotton communities 44 
Community utilization of Lone Star 
cotton 4." 
Conclusions 46 
List of publications on community 
cotton improvement 49 
PURE COTTON SEED A FUNDAMENTAL REQUIREMENT. 
To avoid mixture and degeneration of seed, only one variety of 
cotton should be grown in each community or district. Many other 
improvements may be urged, but having pure seed to plant is a basic 
need. Where different varieties of cotton are planted in neighboring 
fields and taken to the same gins, it is out of the question to keep the 
seed pure. The gins mix the different kinds of seed, crossing takes 
place in the fields, the varieties are mongrelized and cease to be uni- 
form, the fiber deteriorates in quality, and the seed becomes unfit for 
planting. 
*At the end of this bulletin references are given to previous publications in which 
the community features of cotton improvement have been recognized. Several paragraphs 
in this bulletin have been adapted from statements of the same matters in earlier papers 
which are no longer available for distribution. 
2551°— 22 1 1 
