20 HATCH EXPERIMENT STATION. [Jan. 



planted in drills, and plats 3 and 4 in hills. The distance 

 between the rows under both systems has been 3^ feet. 

 Under the "drill" system, the plants have been thinned to 

 1 foot; under the " hill" system, the hills are 3 feet apart 

 and the plants are thinned to three in a hill. We thus have 

 equal numbers of plants under the two systems. The re- 

 sults the past year average as follows : for the acre receiving 

 manure, drill culture, at rate per acre, stover, 5,800 pounds ; 

 grain, 74| bushels ; hill culture, at rate per acre, stover, 

 4,450 pounds ; grain, 63 bushels ; for the acre receiving 

 fertilizer similar averages are, drill culture, stover, 3,630 

 pounds ; grain, 53| ]>usheLs ; hill culture, stover, 3,540 

 pounds ; grain, 54| l)ushels. Averaging both experiments, 

 we have, for drill culture, stover, 4,715 pounds ; grain, 64 J 

 bushels; for hill culture, stover, 3,995 pounds; grain, 58. | 

 bushels. 



Green Manuring in Conlinaous Corn Culture. 



White mustard as a crop for green manuring and nitrogen 

 conservation was sown on one-half the acre where manure 

 alone has l)een under comparison with manure and ])otash 

 in each of the years from 1892 to 1894 inclusive, the seed 

 being scattered in the standing corn late in July in each 

 year. The growth varied greatly from year to year, but the 

 practice proved beneficial. In 1895 the increase in the corn 

 crop apparently due to the culture of the mustard amounted 

 to : stover, 452 pounds ; grain, 5.4 bushels. In July, 1895, 

 the mustard was sown only on one-quarter of the acre, and, 

 because of a very dry and hot autumn, the growth was 

 light. The crop on this quarter this year shows an increase 

 as compared with the quarter not so treated of : stover, 680 

 pounds ; grain, 3 bushels, per acre. 



The other plat, which had been sown with mustard in 

 preceding years, was in 1895 sown with rye on September 

 5, at the rate of 3 bushels per acre. The growth was good, 

 and the rye, when ploughed in on May 11, was 18 inches 

 tall. The apparent result of this treatment is a decrease 

 in crop at the rate per acre : stover, 700 pounds ; grain, 4| 

 bushels. It seems impossible to believe that the effect of 

 this treatment can be permanently injurious. The decrease 



