528 EXPERIMENT STATION RECORD. [Vol.38 



up to the ripening stage. Spring grains could not be successfully sown in tlie 

 fall. 



Winter rye and winter vetch grown together have resulted in good yields 

 of excellent forage, the rye affording considerable pasturage in the fall if 

 seeded early. 



Varieties of wheat and other cereals (Agr. Gaz. N. S. Wales, 28 {1911), No. 

 2, pp. 83-90). — Recommendations are made of wheat, oat, barley, and rye 

 varieties deemed suited to conditions in New South Wales. 



Fodder grasses, Java, C. A. Backer {Teysmannia, 21 {1916), Nos. Jf-5, pp. 

 253-266, pis. 2; 7-8, pp. 4S0-437, pi. 1; 28 {1917), Nos. 1, pp. 33-J,6, pis. 2; 2, pp. 

 71-94, pis. 4). — These articles are a continuation of previous work (E. S. li., 

 35, p. 440. Botanical and cultural notes on Panicum erus-galli, P. colonum, 

 P. distachyum, P. mnbiguum, P. amplcxicaule, P. auritum, P. interruptum, and 

 P. indicum are given in considerable detail, together with the results of chemi- 

 cal analyses and notes on the yield and feeding value of the grasses. A rather 

 extensive list of economic and botanical literature relating to these plants 

 is given. 



The grasses of Ohio, J, H. Schajtneb {Ohio State Univ. Bui., 21 {1917), 

 No. 28, pp. 253-331, figs. 15). — A botanical key to the native, introduced, or 

 commonly cultivated grasses of Ohio, comprising about 180 species of tli^ 

 Graminese. 



Studies of leguminous plants, N. Gangtjlee {Poona Agr. Col. Mag., 8 {1917), 

 No. 3, pp. lJil-156). — The author presents the results of preliminary studies on 

 some aspects of nitrogen fixation in certain leguminous plants suitable for 

 green manuring in Poona. The experiments were planned to study the follow- 

 ing points : At what stage of growth nodule development and, hence, nitrogen 

 fixation begins : the quantity of nitrogen fixed in the whole plant at various 

 stages of growth ; the proportion of nitrogen fixed at various stages of growth 

 normally occurring above and below the ground, tlie latter being only availalile 

 with ordinary cultivation, for an increase in the permanent fertility of the 

 land ; and the influence of available potash, phosphoric acid, and lime on 

 nodule development, and their effect on the quantity of nitrogen fixed in the 

 whole plant at various stages of growth. Considerable tabulated data are 

 presented and discussed and the conclusions arrived at briefly summax'ized for 

 each crop used in the experiments. 



Dolichos lahlab began nodule formation about 15 days after germination, 

 chiefly on the primary roots. Nodules formed on the smaller roots except at 

 the extreme ends but gradually disappeared as the plant approached maturity, 

 with only a few large nodules (about the size of a pea) remaining on the larger 

 roots. The nitrogen in the plant gradually increased from 0.21 per cent in the 

 dried seedling to from 3.7 lo 3.9 per cent in the dried plant at the flowering 

 stage. The portions above ground contained considerably more nitrogen than 

 the roots at all stages of growth. 



Cicer arictinum developed nodules chiefly on the primary roots, although from 

 15 to 20 days after germination the large nodules shrank and numerous small 

 ones formed on the smaller roots. Nitrogen increased from 0.23 per cent in 

 the dried plant just after germination to 0.55 per cent at the end of the seedling 

 stage. The above-ground portions of the seedlings are reported to have con- 

 tained from five to six times as much nitrogen as the below-ground portions. 



In Crotalaria juncea an abundant supply of nodules were found throughout 

 the root system of healthy plants, especially in the presence of an excess of 

 phosphates. The nitrogen increased rapidly during growth, the maximum 

 being reached at time of full flowering and the most rapid increase occurring 



