FIELD CHOPS. 731 



plat receiving barnyard manure proauced 1,8SU lbs. rice per acre, the largest 

 yield of any single application. The plat receiving Ijarnyard manure with 240 

 lbs. bone meal gave the largest yield of any combined application, viz, 2,121 

 lbs. iu 1011. 



In another series of experiments the use of 12,000 lbs. of barnyard manure 

 was followed by a yield of 2,5S9 lbs. rice per acre, a larger yield than either 

 rice straw plowed under, ashes from rice straw, or ashes from 12,000 lbs. barn- 

 yard manure. A plat receiving burnt rice husks as a fertilizer produced 1,G27 

 lbs. rice, as compared with 8S5 lbs. without fertilizer. A plat receiving 250 

 lbs. nitro-lime gave a yield of 1,295 lbs. rice per acre as compared with 1,346 

 lbs. with an application of 12,000 lbs. of barnyard manure. With a combination 

 of 60 lbs. bone meal and 15 lbs. nitrate of soda per acre rice was produceil of 

 higher specific gravity than with any other sort of fertilizer tried, it weighing 

 53.87 lbs. per standard basket (4 gal. =45 lbs.) as an average of 3 years, 

 1910-1912. 



In an experiment to determine the best distance to transplant rice, 8 by 9 in. 

 was found to give the largest yield, 1,143 lbs. per acre. Of 1, 2, 3, and 4 seed- 

 lings in a hill, 2 seedlings gave the best results. In cultivation experiments 

 sprouted rice sown broadcast and harrowed when the plants were 6 in. high 

 gave the best results. 



Report on the agricultural station, Oral, Jalaun [India], of the United 

 Provinces of Agra and Oudh, for the years ending June 30, 1912 and 19 .3 

 {Rpt. Agr. Sta. Oral, Jalaun [Bulla], 1912-13, pp. 1-21). — Some wheat variety 

 tests are reported in which increased yields were obtained by irrigation. 

 Results are also given of variety tests on various soils with cotton, peanuts, 

 millet, pigeon peas, bulrush millet, sesame, gram, and flax, and manurial and 

 tillage experiments as continued from the preceding year. 



Crop rotation experiments at Gross-Enzersdorf, A. voN Liebknbebg de 

 ZsiTTiN {Mitt. Landw. Lehrkanz, E. K. Hochsch. Bodenkul. Wien, 1 (1912), No. 

 1, pp. 1-56). — This article gives results of several series of experiments which 

 were carried on from 1904 to 1910 with spring and winter cereal rotations, and 

 were designed to throw light on the relative value of fallow, green manure, 

 barnyard manure, and commercial fertilizers. 



It was found that the adlition of 50 kg. of P2O5 per hectare (44.5 lbs. 

 per acre) apparently increased the available nitrogen from 2S.9 to 29.83 kg., 

 and the available K2O from 17.1 to 17.26 kg. per hectare in a continuous grain 

 rotation. In one series an increase of 34.5 kg. of dry matter was attributed to 

 each kilogram of a 50-kg. application of PjO^. With an application of 30,000 

 kg. of barnyard manure, an increase of 11.15 kg. dry matter was obtained per 

 100 kg. of the manure. 



It is noted that 15.82 per cent of an application of 50 kg. of P0O5 per hectare 

 was utilized by the crop of cereals. In the case of the barnyard manure the 

 crop utilized 16.3 per cent of the nitrogen, 23.8 per cent of the P-Ob. and 13.3 

 per cent of the KsO, but when both of the fertilizers were applied together the 

 utilization by the crop was 31.1 per cent nitrogen, 21.9 per cent V2O&, and 27.1 

 per cent K2O in a continuous cereal rotation. 



By the introduction of fallow every fourth year into the grain rotation, an 

 application of 50 kg. of P2O5 seemed to increase the available nitrogen from 28.9 

 kg. to 33.7 kg. per hectare, and the available K2O from 16.9 to 21 kg. When 

 an application was made In this .series of 50 kg. of P2OB per hectare, 25.8 per 

 cent was utilized by the crop and an increase of 39 kg. of dry matter was 

 obtained per kilogram of P2O5 applied. With barnyard manure an increase 

 of 6.96 kg. per hectare was obtained per 100 kg. of the manure, and 24.7 per 



