806 EXPERIMENT STATION RECORD. 



effective after a crop of cowpeas. On rich black slough land these fertilizers failed 

 to increase the yield of cotton, but the acid phosphate slightly hastened maturity. 



Velvet beans plowed under increased the yield of corn 10.1 bu. per acre. The 

 plowing under of eowpea vines or cowpea stubble also considerably increased the 

 yield. Corn also gave better yields after crops cultivated late in summer than after 

 forage crops sown broadcast. Among the varieties of corn tested Welborn ranked 

 first with a yield of 23.1 bu. per aire. In 1904 a test of different methods of soil 

 preparation was decidedly in favor of 8 ft. \n-<]*, 1ml the average results for 2 years 

 show bul slight differences. 



A number of experiments conducted in 1903 and 1904 show that 200 lbs. of nitrate 

 of soda per acre as a fertilizer application for winter oats gave an average increase of 

 28.8 bu., and 100 lbs. an increase of 15.5 bu. per acre. 



The authors recommend for cotton on gray prairie upland a fertilizer application 

 consisting of 100 lbs. acid phosphate and 100 to 200 lbs. cotton-seed meal, or 50 to 100 

 lbs. nitrate of soda, and in addition 100 His. of kainit if the land is subject to rust; 

 and on red prairie soils 100 to 150 lbs. of acid phosphate and 100 to 150 lbs. of cotton- 

 seed meal, or 50 to 75 lbs. of nitrate of soda. For winter oats 50 to 100 lbs. of nitrate 

 of soda per acre, applied during the first half of March, is recommended. 



Tests of varieties of cotton in 1904, J. F. Duggar (Alabama College Sta. Bul. 

 130, pp. 10). — Of 38 varieties grown Peterkin, Layton Improved, ami Jackson yielded 

 over 600 lbs. of lint per acre, the yields being 628, 620, and 607 lbs. per acre, respec- 

 tively. Lealand stood at the foot of the list with a yield of 378 lbs. 



The average yields of lint per acre as shown by groups of varieties were as follows: 

 Peterkin type, 601 lbs.; King type, 471 lbs.; Semi-cluster group, 468 lbs.; P>ig Boll 

 type, 466 lbs., and Long Staple group, 400 lbs. The value per acre of the seed at 

 $14 per ton and of the lint at 7 cts. per pound ranged from $31.81 to 850.91, only two 

 varieties — Peterkin and Layton Improved — producing values over $50 per acre. In 

 seed production Allen Long Staple ranked first with 1,120 lbs., and Garrard ami 

 Lealand last with 765 lbs. The proportion of lint to seed in the varieties varied 

 from 30.8 per cent in Allen Long Staple to 39.1 per cent in Cook Improved. 



A variety test conducted on prairie soil in cooperation with this Department 

 resulted in yields of seed cotton ranging from 500 to 830 lbs. per acre and in yields 

 of lint varying from 154 to 290 lbs. Schley, Peterkin, Drake, Crossland, and Toole, 

 in the order given, produced the highest value of seed and lint. Taking the average 

 yield of 283.5 lbs. of lint of the Peterkin group as 100, the yield of the Big Boll group 

 is represented by 78 and that of the Semi-cluster ami Long Staple groups by 69. 



In making observations on the relative earliness of varieties at the station it was 

 found that on September 1 King had 82 per cent of the bolls open, being followed in 

 this respect by Mascot with 77 per cent and Meredith with 49 per cent. Willett Red 

 Leaf stood last with only 6 per cent of its bolls open on that date. In the coopera- 

 tive experiments on the prairie soil the observation was made September 7, when 81 

 per cent of the bolls of Toole and 66 per cent of those of King were open, all others 

 showing a much smaller percentage. 



Cotton culture, R. J. Redding {Georgia Sta. Bul. GO, pp. 201-234).— This bulletin 

 is the annual report on cotton experiments in progress at the station (E. S. R., 14, 

 p. 1060). 



In 1904, 24 varieties tested produced an average yield of 551 lbs. of lint and 955 lbs. 

 of seed per acre. In total value of lint and seed Toole Early, Layton Improved, and 

 Peterkin ranked first, the values being $75.28, $75.23, and $75.08 per acre, respec- 

 tively. Layton Improved stood first in yield of seed cotton, Toole Early in yield of 

 lint, Schley in yield of seed, Moss Improved in percentage of lint, Meredith Big 

 Boll in largeness of boll, Rich Man Pride in sinallness of boll, and Greer Improved in 

 earliness. 



