1038 EXPERIMENT STATION RECORD. 



Cotton culture, R. J. Redding {Georgia Sl(t. Bid. 56, ]iji. lZ^l-154)- — These exper- 

 iments are continued from previous years (E. S. R., 13, p. 40). In 1901, 26 varieties 

 were tested. Peterkin, AVise, Schley, Pullnot, Culpepper, and Jones, given in the 

 order of their value of total products, headed the list in profitable returns. Omitting 

 Culpepper and Jones, they ranked in the same order in the production of lint cotton 

 per acre. Mascot, the eaj-liest variety, produced a total crop vahied at $42.11 per 

 acre and ranked thirteenth as to profitableness. The highest value of total crop in 

 these experiments was 144.13 per acre. Sims Long Staple, tlie or.ly variety of upland 

 long staple type grown in these tests, ranked twenty-fifth in the value of lint and 

 seed produced. This season, unlike the results of the 7 previous years, the best half 

 of the number of varieties had the smallest bolls and also the smallest seeds, still "it 

 seems fair to conclude from the 8 years' record that large bolls, large seed, and a high 

 percentage yield of lint are closely related with the greatest value of total product of 

 lint and seed, and that these are all desirable qualities." 



Varietal notes and directions for selecting a variety and selecting seeds in the field 

 are given. 



This season's results of the composite seed test were equally significant with those 

 obtained in pi'evious years. 



Taking into consideration the results of distance experiments for this and the 2 

 previous seasons, the author concludes that on soils varying in productive capacity 

 of from 1 to IJ bales per acre the best results will be obtained when the plants are 

 placed 12 in. apart in rows 4 ft. wide. 



As in 1900, the results of the comparison between thorough and ordinary prepara- 

 tion of the soil were inconclusive. The yield of plats which had received a prepara- 

 tory plowing, subsoiling, and harrowing was a little smaller than the yield of the 

 plats not given this extra preparation. 



A potash test on a certain soil showed that with o(i2 11 )s. of 14 per cent acid phos- 

 phate, 189 ll)s. of cotton-seed meal, and 88 lbs. of nitrate of soda per atrre, at least 

 31.20 11)s. of muriate of potash would be required to produce a maxinmm yield of 

 seed cotton. A nitrogen test with cotton-seed meal and nitrate of soda indicated 

 that on the soil on which the test was made no nitrogen, or at most a very little, is 

 required when 355 lbs. of 15 per cent acid phosphate and 28 lbs. of 50 per cent muri- 

 ate of potash are applied per acre. The author believes that the soils of middle 

 Georgia can be brought into such condition by a regular rotation of corn and cow- 

 peas, small grain and cowpeas, and cotton that they will not require nitrogenous 

 fertilizers. 



The weather conditions for a series of seasons are shown in the bulletin, and brief 

 notes on cotton culture, together with fertilizer fornuilas for the crop, are given in 

 an appendix. 



Experiment on cotton at the society's experimental farms at Mit-el-Diba 

 and Ghizeh, G. P. Foaden [Jour. Khedir. Agr. Soc. and School Agr., 3 {1901), No. 6, 

 pp. 24S-261, figs. 2). — Fertilizer and rotation experiments with cotton are reported. 

 The results indicated that suitable applications of commercial fertilizers give profita- 

 ble results. Superphosphate increased the yield satisfactorily and hastened maturit}', 

 while nitrate of soda also increased the yield, but greatly delayed ripening, and pro- 

 duced a crop somewhat inferior in quality. A mixture of superphosphate and nitro- 

 gen gave the best results. The author recommends the use of 3 or 4 cwt. of super- 

 phosphate and from 1^ to I5 cwt. of either nitrate of soda or sulphate of ammonia 

 per acre. Potash alone did not give profitable returns. In rich soil where cotton 

 was grown immediately after berseem the application of manures had very little 

 effect. Cotton grown after crops requiring irrigation during the sumuier did not 

 give very good yields. The use of suitable mixtures of manures was found to hasten 

 the maturity of the cotton crop. 



Cotton cultivation in India, G. P. Foaden {.lour. Klicdii. Agr. Soc. <nid School 

 Agr., 3 {1901), No. 5, pp. 220, ^«';).— Stati.-tics on tlic crop of 1900-1901. 



