FIELD CROPS. 121 



been removed^ 7.222 kilos. The tubers in the former contained 11.16 

 per cent of starch, in the hitter 11.8 i)er cent. Some of these potatoes 

 had consumed 13 per cent of the starch in the seed; others 9 i^er cent. 



The author conchides that the starch content of the seed tuber has 

 no effect on either the amount or starch content of the yiekl. 



Potato experiments, M. A. Scovell and 0. W. Mathews {Ken- 

 tiiely Sta. Buh 61, pp. 3-13, 36-42). — These experiments are in con- 

 tinuation of previous work reported in Bulletin 55 of the station (E. S. 

 E., 7, p. 201). 



Tests u-ith fertilizers (pp. 3-13). — The potatoes used for seed were 

 uortheru-gTown Early Rose; these were immersed for A hour in a solu- 

 tion of corrosive sublimate, 3i oz. to 30 gals, of water. The fertilizers 

 were scattered by hand in the row, and slightly mixed with the soil 

 before planting. Nitrate of soda, muriate of i)otash, and acid phosphate 

 were used singly and in combinations of 2 and 3. The data are tabu 

 lated. The author concludes that both potash and nitrogen are needed 

 for potatoes on the soil under experiment. 



In a similar cooperative experiment reported, phosphoric acid seemed 

 to be the element needed. 



Varieties of potatoes (pi). 36-42). — Of the 241 varieties tested, about 

 2 lbs. each were cut into 20 pieces of nearly even size; these were 

 planted Aj^ril 15 in drills about 4 in. deep, pieces 16 in. apart in the 

 row. Each variety occuiiied 80 sq. ft. 



The seed previous to i^lanting was treated with a solution of corrosive 

 sublimate, 1 part to 1000 of water. The yields are tabulated. 



Potatoes, L. Foster {Montana Sta. Bui. 9, pp. 3-22). — By way of 

 introduction the methods of potato culture emj)loyed by several farmers 

 in the State are given. May 10 and 11, 52 varieties of potatoes were 

 planted on fall-plowed land, the seed pieces being dropped 13 in. apart 

 in 3-foot rows and covered 4 in. deep. One irrigation was given when 

 the potatoes were in bloom. The yields are tabulated. Potatoes were 

 planted at depths of 2, 3, 4, 5, 6, S, and 10 in. There was a constant 

 decrease in yield with increase of depth. In a comparison of hills vs. 

 drills, drills gave the larger yields. In a trial of seed cut 5 days before 

 planting vs. seed freshly cut, the larger yields were obtained from the 

 latter. 



Potatoes, L. C. Coijbett {^¥cst Virginia Sta. BuL 41, pp. 190-206, 

 fig. 1). — Horse manure and lime, alone or in combination, were used on 

 the manured portions of the land on which 35 varieties of potatoes 

 were grown in 1894 and 62 varieties in 1895. The results are tabu- 

 lated. Twenty-one of the 35 varieties produced larger yields in 1895 

 than in 1894; the 14 varieties showing a falling off in 1895 were mainly 

 those most promising in 1894. Only 4 of the 35 varieties maintained 

 an average yield of 170 bu. i)er acre during both seasons. 



In treating the seed the advantage of using corrosive sublimate 

 without lime and Bordeaux mixture with lime is spoken of. The lime 



