SINGLE-STALK COTTON" CULTURE AT SAN ANTONIO. 7 



Table I shows that during the cool spring of 1914 an average of 1.6 



vegetative branches developed on the wide-spaced plants, while the 



average on the single-stalk plants was 0.53 branch per plant. The 



range of averages in wide-spaced rows was from 1.2 to 2 branches 



per plant, while in single-stalk rows it was from 0.4 to 0.64 branch per 



plant. 



FLOWERING RECORDS. 



Beginning with June 17, when the first flowers appeared, a daily 

 flower census was taken in sections A and B to compare the rate of 

 flowering of wide-spaced and single-stalk rows. This was continued 

 for 20 days. The results of the census are given in Table II. 



In the first part of Table II, which represents the census in section 

 A, it may be seen that for three days more flowers opened in the 

 wide-spaced rows than in the single-stalk rows, while in the second 

 part of the table, which represents the census taken in section B, 

 this was true only on the first day that flowers opened. After the 

 flowers in the single-stalk rows began to outnumber those in the wide- 

 spaced rows the lead was maintained throughout the entire period. 

 The increase in the number of flowers in single-stalk rows over that 

 in the wide-spaced rows ranged from 30 to 204 per cent, the average 

 for the 20-day period being 125.6 per cent in section A and 135 per 

 cent in section B. 



At the end of the 20-day flower census, July 6, the drought had 

 become severe, and most of the flowers produced after that date 

 failed to develop into bolls. Consequently the census for the entire 

 field was not carried further, but was continued for 20 days longer on 

 eight representative rows in each of sections A and B. None of the 

 flowers opening after July 10 produced bolls, so these flowers had no 

 part in increasing the yields of either single-stalk or wide-spaced rows. 

 Their numbers are given, however, in Table III for four 10-day peri- 

 ods in order to show that the single-stalk rows continued to produce 

 more flowers than the wide-spaced rows for the extended period. 



Table III shows that at the end of 40 days 12,574 flowers had opened 

 on 20 wide-spaced rows in section A, while 84.4 per cent more, or 

 23,189, had opened on 20 single-stalk rows. In section B 20 wide- 

 spaced rows opened 13,725 flowers, while 20 single-stalk rows opened 

 78 per cent more, or 23,401 flowers. 



