FIELD CEOPS. 37 



Experiments with rye on sandy soil, B. Schtjlze {Mitt. Deut. Landw. 

 GeselL, 30 (1915), No. 37, pp. 5U-546).— The results of testing the value of fall 

 and spring applications of nitrogen sliow that the best shields and profits were 

 obtained when part of the nitrogen was applied at seeding time in the fall as 

 sulphate of ammonia and part in the early spring as nitrate of soda. Light 

 seeding was found to give more profit than heavy seeding for rye. 



Green manuring with sanai in Bihar, A. and G. L. C. Howard {Agr. Research 

 Inst. Pusa Bui. 51 {1915), pp. 25-21, pi. 1). — This article gives the results of the 

 use of sanai as a green manure crop for tobacco in 1914, which are summarized 

 as follows : 



" The experiments with sanai as a green manure for tobacco in the botanical 

 area at Pusa have led to very definite conclusions. Drainage is essential for 

 success with gi*een manure on the high lands. The sanai should be sown on the 

 early rains in May and plowed in as near July 15 as possible. Where large 

 areas have to be dealt witli the period from July 7 to July 21 would be suitable. 

 Any crop left on July 21 should be cut at once, left on the surface, and plowed 

 in as soon as possible. To get the maximum benefit of the green crop the 

 interval between the plowing in of the sanai and the transplanting of the tobacco 

 should be eight weelis. A longer or a shorter time leads to loss." 



The economic value of the soy bean, J. C. Robert {Mississippi Agr. Col. 

 [Pub.], 1915, July 1, pp. 15, figs. 7). — The author discusses the feeding value, 

 soil fertility value, and general farm economy value of soy beans, and reports 

 chemical analyses of 18 varieties of beans grown in 1913 and 1914. The yields 

 of seed and of hay for five varieties in 1911 ranged as high as 2,600 and 5,500 

 lbs. per acre, respectively, and in 1912, 2,680 and 5,200 lbs. 



A three-year rotation for Mississippi farmers is shown, which consists of 

 hairy vetch, bur clover turned under, and cotton and crimson clover the first 

 year; crimson clover turned under, corn and soy beans, and oats sown in 

 October of the second year; and oats, soy beans, hairy vetch, and bur clover 

 planted in September of the third year. 



The use of the soy bean in the Orient and European countries for oil, milk, 

 cheese, casein, bread, biscuits, flour, jellies, cakes, and sauces is noted. 



Report of progress in sugar-beet trials for the season of 1914, J. W. Ince 

 {North Dakota Sta. Bui. 113 {1915), pp. 249-269, figs. 5).— This bulletin con- 

 tinues the report of work previously noted (E. S. R., 32, p. 435). 



The percentage of sugar in the beets ranged in 1914 from 11.7 to 21. With 

 some fluctuations there was shown to be an increase in the sugar content and 

 size of beets on harvest dates from September 28 to October 31. 



Meteorological data showing temperature and distribution of rainfall and 

 Siunshine for the growing season of 1914 are included. 



The variation in sugar content of beets during the first year's growth, 

 O. Mtjneeati, G. Mezzadrolt, and T. V. Zapparoli {Stag. Sper. Agr. Ital., ^8 

 {1915), No. 2, pp. 85-136, figs. 2).— This gives results of a study of sugar beets 

 grown in 1914, including meteorological data for the season. 



The tabulated data for over 1,700 individual beets show the weight of leaves 

 and of roots, percentage of sugar, total sugar, and form of root. These beets 

 were planted on March 31 and harvested on different dates from June 10 to 

 December 12. In some groups the beets were partially defoliated. 



The average percentage of sugar for the different groups ranged from 6.62 

 for those harvested June 10 to 15.8 for those harvested November 9, after which 

 date there was a falling off to 13.55 per cent. The ash content fluctuated from 

 1.04 per cent on June 10 to 0.85 per cent on December 12. The total nitrogen 

 per beet fluctuated considerably, being highest (157 mg.) on June 27 and 



