448 



INDEX 



Cotton (Continued). 



pollen-grains, 28. 



potash fertilizers check rust, 89. 



potassic fertilizers for, 88. 



protoplasm of, 21. 



qualities associated with high 

 yield, 55. 



qualities sought tor, 54. 



rainfall, amount and distribu- 

 tion, 77. 



raw rock phosphate for, 87. 



reproduction, 27. 



reproductive organs, 27. 



ridging versus level prepara- 

 tion for, 106. 



Rio Grande type, 43. 



River Flood Plains Province, 

 soils of, 75. 



root-hairs, 9. 



roots, function of, 10. 



roots, primary, 8. 



roots, secondary, 9. 



roots, types of, 8. 



root-system, 8. 



rotations for, 99. 



rows, distance between, 115. 



Ruston fine sandy loam for, 71. 



seed, 18. 



quantity of, 109. 

 structure of, 18. 



seed-bed, preparation of, 101. 



selecting best progenies, 60. 



selection of foundation stock, 

 58. 



semi-cluster type, 42. 



sharkey clay for, 76. 



skeleton, 21. 

 functions of, 21. 



sodium nitrate versus cotton- 

 seed meal for, 83. 



soils, classification of, 68. 



soils, need of for nitrogen, 85. 



soils, need of for phosphdric 

 acid, 88. 



Cotton (Continued). 



soils, need of for potash, 89. 

 soil types for, 67. 

 species, 30. 



number of, 31. 



classification of, 31. 



American upland cotton, 

 33. 



Sea Island cotton, 35. 



Peruvian cotton, 36. 



Indian cotton, 36. 



Bengal cotton, 37. 

 spring plowing for, 104. 

 stable manure for, 94. 

 staple, 125. 

 stem, 11. 

 stomata, 26. 

 storm resistance, 15. 

 structure of, 21. 

 subsoiling for, 105. 

 sunshine for, 79. 

 Susquehanna fine sandy loam 



for, 71. 



temperature for, 79. 

 testing transmitting power, 60. 

 Tifton sandy loam for, 70. 

 tillage by separate rows, 112. 

 tillage for, 101. 

 tillage, frequency of, 114. 

 Trinity clay for, 75. 

 value in cotton-belt, 3. 

 value in United States, 3. 

 valuing, points in, 122. 

 varieties, classification of, 39. 



description of, 50. 



influence of soil and climate 

 on, 39. 



origin of, 38. 



stability of, 39. 

 variety test, 54. 

 vascular system, 14. 

 Vernon soils for, 76. 

 Victoria soils for, 72. 

 water, giving off of, 26. 



