124 EXPERIMENT STATION RECORD. 



supply; commercial fertilizers; lime and various amendments; green manures and 



fallows; and rotations. Au appendix gives analyses of animal manures and various 

 other farm products. 



FIELD CROPS. 



Fertilizer, culture, and variety experiments on corn, -«. J. Red- 

 ding (Georgia Sta. Bui. 34, pp. 529-556). — These experiments are in 

 continuation of those reported in Bulletin 80 of the station (E. S. R., 7, 

 p. 943). Meteorological data for the season are tabulated, and the 

 influence of the abnormal conditions in reducing the yields and modi- 

 tying the action of fertilizers is specially noted. 



In the general fertilizer test nitrate of soda, acid phosphate, muriate 

 of potash, and cotton-seed meal were used. The results are tabulated, 

 but the differences in yield were so slight, owing to the unfavorable 

 season, that no conclusions are drawn. 



Plats which in 1895 had grown cotton, with amounts of fertilizers 

 varying from 400 lbs. to 1,200 lbs. per acre, were planted to corn in 

 1890, each plat receiving a small amount of fertilizer. Almost nc 

 residual effect of the fertilizers was shown, the plat receiving 1,200 lbs. 

 of fertilizer in 1895 yielding only 2 bu. per acre more than the check 

 plat which had received no fertilizer either year. 



.Muriate of potash, in connection with superphosphate, cotton-seed 

 meal, and nitrate of soda, exerted an unfavorable effect on the yield, as 

 the plats without potash averaged 26.02 bu. per acre, those with potash 

 24.09 bu., and those without any fertilizer 23.03 bu. Sulphate of pot- 

 ash did not produce a harmful effect, but the experiment indicated 

 that "this soil does not require the addition of potash for corn." 



To test the effect of nitrate of soda applied at planting, 2 series of 

 plants were used, On one series a complete fertilizer of acid phos- 

 phate, sulphate of potash, and cotton -seed meal was applied days 

 before planting, while on the other series part of the cotton-seed meal 

 was omitted and an equivalent amount of nitrogen in the form of 

 nitrate of soda added at planting tune. The average yield of the plats 

 receiving nitrate was 28.86 bn. per acre, of tlie plats without nitrate 

 28.2!) bu., a difference of 0.57 bu. in favor of applying the nitrate. The 

 added cost of the nitrate for this gain was 8 cts. 



Of the 20 varieties tested in 1890, Cocke Prolific, Higgius, Henry 

 Grady, Shaw, and Stegall led in productiveness, but of varieties tested 

 for 5 years, Shaw Improved, lliggins, Shannon White, and Southern 

 White gave largest yields. 



To test a method frequently used in prize contests alternate plats 

 were planted with single kernels 4 ft. apart in single rows the same 

 distance apart, and with single kernels "spaced in each of the listing 

 furrows 4 ft. apart, so as to stand in double rows 6 ft. apart from cen- 

 ter to center, and the plants 4 ft. apart in each row of the double row, 

 the successive plants alternating regularly from end to end of the double 

 rows. 1 ' The former method gives 2,704 stalks per acre and the latter 



