FIELD CROPS. 625 



36 lbs. The average yields per acre of the plats are shown in the fol- 

 lowing table: 



IVisliels. 



Unfertilized plats 10. 4 



Nitrogen alone (average of all foi-nis) 18. 2 



Superphosphate and kainit 12. 3 



18 lbs. nitrogen with superphosphate and kainit 20.3 



36 lbs. nitrogen with superphosphate and kainit 23. 



Mtrogeii in every form and amount largely increased the yield. 

 Nitrogen in the form of cotton-seed meal and cotton seed (fresh, 

 ground, and rotted) gave the best results and these materials are pre- 

 ferred and recommended because of economy a'nd convenience. 



The increased yield with phosphoric acid, was very slight, and in some 

 cases imperceptible. Small quantities of phosphoric acid are consid- 

 ered advantageous for corj]. In a special experiment potash in every 

 form, alone and in combination, resulted in an actual decrease of the 

 crop. 



Fertilizers were applied (1) all at planting, or (2) at planting and at 

 last cultivation, or (3) at planting, second working, and last cultiva- 

 tion. The increase witli 2 applications over 1 application was 1.3 bu.j 

 of 3 applications over 1, 3 bu.; and of 3 api)lications over 2, 1.7 bu. 

 j)er acre. " Concurrent results of previous years favor different appli- 

 cations of nitrogenous manures for corn on this soil." 



Of 28 varieties of corn tested 28.4 bu. was the largest yield, made 

 by Virginia White Gourd Seed. 



Experiments with corn, R. J. Redding {Georgia Sta. Bui. 23, pj^. 

 73-88). 



Sijnopsis. — Tests of fertilizers, subsoiling, iutercultural fertilization, pulling fodder, 

 cutting and shocking corn, varieties, composting, and detasseling. All of the 

 fertilizer mixtures caused a financial loss. Subsoiling reduced the yield of corn. 

 Fodder pulling yielded a slight net prollt, although it reduced the yield of grain 

 3.52 bu. per acre. 



Fertilizer experiments {\\\i. lo-ll). — The basal fertilizer used consisted 

 of 312 lbs. of superphosphate, 18 lbs. of muriate of potash, and 130 

 lbs. of nitrate of soda per acre, and cost $5.70. This resulted in a 

 financial loss of $3.62 per acre; every increase in any fertilizing con- 

 stituent of the mixture still further increased the loss. Although all 

 combinations of fertilizers entailed a loss, nitrogen was more effective 

 than phosphoric acid and potash. 



"These results do not contradict those of previous years, but are confirmatory of 

 tbe indication that Indian corn does not respond profitably to commercial fertilizers 

 on the high, dry uplands of middle Georgia. They suggest that corn should always 

 be planted as a part of a regular rotation on such lands, or confined in the main to 

 low, moist, dark-colored (humus) soils. Tbe experiments of previous years show that 

 such fertilizers do pay on cotton and oats. It is therefore suggested, with confidence, 

 that corn should follow a previously Avell-fertilized cotton crop, and should bo 

 liglitly fertilized with a highly nitrogenous fertilizer, such as cotton seed (or meal), 

 nitrate of soda, or with a compost of stable manure." 



