138 EXPERIMENT STATION RECOED. 



" The yields obtained from winter rye and from winter and spring emmer have 

 been much lower than those from the other cereals. These crops can not now be 

 recommended for western South Dakota. The best yield from flax in a 2-year 

 test was obtained from the Select Ilussian variety. It is probable that the best 

 results will be obtained if this crop is sown as early as good germination and 

 growth may be expected." 



The continuous growing of wheat and rye, 1914, J. G. Lipman et al. {New 

 Jersey Stas. Rpt. 191Jf, pp. 222, 223, pi. 1). — This report continues work pre- 

 viously noted (E. S. R., 32, p. 533). 



The results of 1914 were similar to those of last j-ear in that the yields of rye 

 and wheat were greatly increased by the use of the legumes in the rotation. 

 The amount of nitrogen recovered on these plats was also gn-ater than on those 

 on which no legumes were used. In the case of the wheat the nitrogen recov- 

 ered was more tlian doubled. 



Green manuring and cover crops, AV. P. Brooks {Ma/t.<inr]iuscits Sta. Circ. 55 

 (1915), pp. 6).— A revision of Circular 37 (E. S. R., 32, p. 332). 



Winter crops, C. K. McCijelland (Georgia Sta. Bui. 117 (1915), pp. 329-352, 

 figs. 5). — This bulletin gives data as to methods of production of wheat, oats, 

 rye, barley, spelt, vetch, bur clover and crimson clover, and briefly discusses 

 the value of winter crops for rotation, for preventing soil leaching and washing, 

 for winter pasture, for green manure, as nitrogen gatherers, and for hay and 

 grain. Variety tests of wheat, oats, rye, and barley ; cultural tests with rye, 

 spelt, and vetch with cereals; and inoculation tests with crimson clover are 

 reported. 



Filling silos, .T. B. Fitch (Kansas Sta. Circ. 53 (1915), pp. 8, figs. 3). — The 

 subjects discussed in this circular inclu<le the condition of the crop for filling 

 the silo, methods of filling, adding water, packing, gas in the silo, and sealing 

 the silo. 



Alfalfa in Delaware, A. B. Grantham (Delaware Sta. liul. 110 (1915), pp. 

 3-42, figs. 12). — Tliis bulletin briefly discusses methods of production and the 

 value of the crop for various purposes, suggests suitable rotations, and gives 

 results of fertilizer exiieriments with alfalfa. 



The data show that higher yields of hay followed the use of 2.000 lbs. of burnt 

 lime per acre than of either 1.000 or 4,000 lbs., and that when acid phosphate 

 was used singly or in combination with other fertilizers the increase from the 

 use of lime was not so great as where phosphoric acid was not applied. "The 

 plats receiving nitrogen alone and nitrogen and potash were a trifle less favor- 

 ably located, and while the stand of alfalfa was good, the yield Is perhaps a 

 little less than it .should be. Tluis nitrogen alone produced a little less than the 

 uninocnlated check; nitrogen and potash without lime yielded about the same 

 as the check. Tlie low yields from these plats might be considered in error if it 

 were not for the poor showing nitrogen and potash made in other coml>inations. 

 Where nitrogen was used in connection with phosphoric acid and potash and 

 not limed, the gain diie nitrogen was zero. Where the above combinations were 

 used with lime, the gain due nitrogen Avas but 40 lbs. Where nitrogen was used 

 with phosphoric acid and uulimed, as against phosphoric acid alone, the gain 

 due nitrogen was but 130 lbs. Potash behaves similarly to nitrogen, although 

 the gain is more than from nitrogen. Where potash is usetl with nitrogen 

 combined, as compared with nitrogen alone, the gain due potash is only 120 lbs. 

 The combination of phosphoric acid and potash unlimed, as compared with 

 phosphoric acid alone, gives an increase of 400 lbs. due to potasli. Wliere nitro- 

 gen, phosphoric acid, and potash were used together and unlimed, as compared 

 with nitrogen and i)hosphoric acid, the gain due imtash is 270 lbs. If lime is 

 added to both of the above combinations, the increase from potash is 560 lbs. 



