18 



o-in seed; of early and late planting; and of thorough with average 

 cultivation under both of the above conditions. By thorough culti- 

 vation is meant five to six plowings with three or four choppings, and 

 b}^ average cultivation, three to four plowings with two or three chop- 

 pings. The rows were 5 feet apart and the plants were chopped to 

 30 inches in the row. 



It was desired to determine by comparison the relation of these 

 several methods of treatment to the production of cotton during a sea- 

 son of severe bollworm injur}^ Fortunately, from an experimental 

 standpoint, this insect was quite numerous and destructive in these 

 plats, and on the plantation generally, during August and the first 

 half of September, and the results obtained, therefore, bear directly on 

 the question of the possibilit}^ of reducing bollworm injury by cultural 

 methods. 



The considerable difference in jdeld to be noted between the King 

 plats and the plats planted to common gin seed must, in fairness, be 

 attributed in part to the abnormal lateness of the season. While a 

 full growing and fruiting season was afforded the early-maturing 

 variety, the later common gin seed cotton was cut off by frost. The 

 latter, with an average season, would no doubt have matured a con- 

 siderably larger crop. 



In the comparisons between plats 1 and 5 and between plats 2 and 6 

 it should be noted that plats 5 and 6 were entirely replanted twenty 

 days later than date of first planting, so that these plats were in fact 

 planted rather late instead of earl}^ But the necessity for replanting 

 was due entirel}^ to the inferiority of the common gin seed to the King 

 seed. The superior vitality of the King seed resulted in a satisfactory 

 stand under the adverse weather conditions then prevailing, whereas 

 the gin seed germinated very poorl3^ The results are in full accord 

 with the observations made on the respective plats throughout the 

 season. Plats 1 and 2 suffered much less from bollworms during 

 August and September by reason of their more matured condition 

 than did the other plats. The injury was most marked on the late 

 fruiting and comparatively unprolific plants from native gin seed, and 

 a considerable part of the reduction in yield must be attributed to this 

 fact. 



For ready comparison the more important results of the experi- 

 ments at Hetty are shown in the following statements: 



Early-maturing variety versus native gin seed. 



Yield per acre with early-planted King seed and thorough cultivation, 

 pounds seed cotton 1, 348. 20 



Yield per acre with early-planted native gin seed and thorough cultivation, 

 pounds seed cotton 187. 60 



Yield per acre in favor of King seed pounds seed cotton. . 1, 160. 60 



Value of excess per acre, at 3 cents per pound of seed cotton |34. 81 



191 



