FIELD CROPS. 333 



At Garden Cily, Kans., corn was not produced at a profit ])y any of the 

 cnllur.il methods tried, viz., fall i)lowed, spring plowed, subsoiled after com, 

 iishxl ;ifler corn, and sununer tilled. At DaUmrt, Tex., the profits ranged from 

 25 cts. by the sj)ring plowing after small grains method to $-4.80 per acre by 

 listing after corn. la.stiiig is the only method to show a profit, 07 cts. per acre, 

 at the Amarillo, Tex., station. 



With milo maize grown at Garden City the lowest yield of both grain and 

 stover was on .spring-])lowed land that had been continuously cropped to this 

 crop. The highest yield was from fall plowing after sm.ill grains. The former 

 method resnltetl in a loss of 83 ct.s. per acre and the latter a profit of $2.07 per 

 acre. At Dalhart, on a sandy loam soil, it gave profits ranging from $3.r>8 per 

 acre by fall jjjowing after small grains to $14.21 by sununer-tilUMl land. At 

 Amarillo, on a heavy silty clay loam, it gave profits ranging from $1.40 per acre 

 on sunnner-tilletl land to $8.41 by fall plowing after small grains. 



At Garden City Kafir com after Kafir corn on spring-plowed land showed the 

 lowest margin of profit, viz, 04 cts. per acre. The greatest net profit per acre, 

 $.3.78, was secured by growing Kafir corn after small grains on fall-plowed land. 

 At Dalhart Kafir corn produced the largest net i)rofit. $20.11, on land sununer- 

 tilled the i)receding year. The profit of $2.90 by the method of fall plowing 

 following small grains was the lowest. Kafir corn was produced at Amarillo 

 at a loss of $2.,54 jier acre by the summer tillage method. The largest profit, 

 $8.21, was by fall plowing after small grains. 



The cost per acre of the different methods of soil preparation for niilo maize 

 and Kafir corn at all stations is estimated as fall plowing after continuous 

 cropping $7.44, fall plowing after small grains $7.44, spring plowing after 

 continuous cropping $7.00, listing after continuous cropping $,").!)3, and summer 

 tillage $12.31. Data on the cost of protlucing corn have been jireviously reported 

 (E. S. R., 33, p. 231). 



It is note<l that the greatest values in the Kafir corn crops were in the stover 

 rather than the grain. 



Forage crops, It. W. Allen (U. 8. Dept. Affr., Bur. Plant Indus., Work 

 UmatiUa Expt. Farm, 191-i, pp. 10, 11, fig. 1). — This describes experiments the 

 results of which have shown that Sudan grass, Dakota Amber sorghum, and 

 feterita are desirable crops for that region. Dwarf Kafir corn and brown 

 kaoliang were not so promising. 



The effect on a crop of clover of liming the soil, F. W. Morsk (Massachu- 

 setts tita. Bui. 161 (1015), pp. if /.9-/2//).— These experiments to study the effect 

 of lime were begun in 1909 with the application of 3,000 lbs. of slaked lime per 

 acre on one-half of a series of plats that otherwise received various fertilizer 

 materials, but carried for each plat 45 lbs. of nitrogen, 80 lbs. of phosphoric 

 acid, and 125 lbs. of potash per acre. In 1913 an additional application of lime 

 in the form of hydrate, 4,0(J0 lbs. per acre, was given to the limed half of the 

 series of plats. Notes on a red clover crop grown on this series of plats during 

 1914 show that "the clover on the limed areas receiving no nitrogen continued 

 to lead all the other plats in size and vigor of growth, and began to bloom sev- 

 eral days ahead of them. The whole area receiving nitrate of soda looked uni- 

 form to the eye, but a little behind the limed area without any nitrogen. The 

 limed areas receiving sulphate of ammonia were like the areas receiving nitrate 

 of soda. The unlimed areas without nitrogen produced a slow-growing crop 

 which looked .scanty In comparison with the growth on the limed portions of 

 the same plats, but an examination of the ground showed the plants to be as 

 numerous on one area as on the other. The clover on the uulinied areas receiv- 

 ing sulphate of ammonia looked noticeably inferior to all other plats without 

 lime." 



