FIELD (GROT'S. 843 



purjioses it. may l>i' safely i-ohcIikUmI tliat tlu' corn plant has no preference as to the 

 souree of the nitroj,'en, as between nitrate of soda, cotton-meal and dried l)lood." 

 Fertilizer formulas for corn on different (ieor<^ia soils are j^iven. 



Plantin<r corn in the water furrow as compared with j)lantin<i on the bed did not 

 prove advantaiieous, due, to a large extent, to a heavy rainfall shortly after plantinjj:. 

 Deep iiianting <,'ave slijjhtly better yields than shallow planting, although the weather 

 conditions were unfavorable to this method. A test of thorough and ordinary soil 

 Itreparation is reported. Ordinary preparation consisted in plowing under on Feb- 

 ruary 14 a catch crop of rye after cotton to the depth of G in., and harrowing the 

 soil; while for thorough preparation the soil was again plowed 10 in. deep and har- 

 rowed on INfarch 14. The results showed an increase of only 1.10 bu. per acre in 

 favor of thorough j)reparation. In a tillage test cultivating thrice in succession every 

 o weeks, twice every 2 weeks, and once every week, resulted in yields of 32.65, 31.25, 

 and o2.55 bu. of shelled corn per acre, resi)ectively. From a number of 2-eared stalks 

 both ears were used for seed to <letermine the inlluence of position of the ears on the 

 stalks on the progeny. The i)lats ]ilanted with seed from the lower ears produced 

 the larger number of ears, and, therefore, the larger proportion of 2-eared stalks. 

 The yield of these plats was 0.85 bu. per acre greater than the yield of the plats 

 planted with seed from the upper ears. 



Effects of renewing- the humus in continuous corn culture, W. C. Latta 

 {Jndkiita Sla. Rj>l. luOl, pp. 22-25). — An experiment in restoring hutnus was con- 

 ducted on soil which had its humus sujiply reduced by growing corn and entirely 

 removing the crop for 10 successive years. The methods of restoring humus to the 

 soil consisted in (1) passing the corn stover through a feed cutter and returning it to 

 the soil at the time of plowing, (2) applying wheat straw equal in weight to the 

 stover produced, and (3) sowing crimson clover in the fall, to be turned under the 

 following spring. The results obtained on the different plats from 1894 to 1900, 

 inclusive, are given in tables. Taking the yields obtained on the plats during the 3 

 years preceding these experiments as a base, the stover, wheat straw, and crimson 

 clover increased the production ot grain during the last 3 years of this test by 39.78, 

 18.19, and 17.92 per cent, respectively, as compared with the yields of the check 

 plats. 



Corn culture, G. d'Utra {Bol. A(jr. Sao Paulo, 2. ser., 1901, No. 5, pp. 20S-303). — 

 A report on culture and fertilizer experiments with corn. 



Fertilizers for com, C iyi'ss.R {Abono del malz. Valencia: La AgricuUura Eapa- 

 iiola, 1900, pp. 2S). — A brief treatise on corn culture, with a report on fertilizer 

 experiments. 



Cotton and cotton oil, D. A. Tompkins {Charlotte, X. C: Author, 1901, pp. 500, 

 fiijK. 100). — This work treats of the planting, cultivation, harvesting, and marketing 

 of cotton; the organization, construction, and operation of cotton-seed oil mills, and 

 the uses of cotton seed in cattle feeding and soil fertilization. 



Cowpea experiments, C. L. Newman {Arkan-'ias Sta. Bui. 70, jqi. S5-123,fifis. 2). — 

 This bulletiia contains a discussion on the value and importance of cowpeas and a 

 report on a number of experiments in their culture. 



Fourteen varieties were grown for 2 and 3 years in succession, and their yearly and 

 average yields are given in a table. The average yields for 1899, 1900, and 1901 w'ere 

 12.58, 22.84, and 29.53 bu. per acre. New Era produced the largest average crop of 

 peas, 39.95 bu. per acre, and Lady the largest average yield of hay, 4,919 lbs. per 

 acre. The proportion between j)eas and hay varied from 22.4 lbs. to 128.2 lbs. of 

 peas to 100 lbs. of hay in Red Ripper and Old Man, resi)ectively. The proportion 

 of hay to total weight of the dry plant ranged from 3(5. 62 to 76.49 per cent and of 

 peas to the entire pods from ()5.6 to 75.(5 per cent. 



The results of sowing at different rates show that 12A lbs. of seed per acre gave 

 heavier yields of hay and jjcas than \'6% lbs. or more. The author recommends 10 



