522 EXPERIMENT STATION RECORD. [Vol.40 



and annual forage crops, a comparison of three methods of planting annual 



forage crops, rate of seeding tests with Black Amber sorghum and Sudan grass 

 for forage, variety tests with millet for forage and observations on the effect of 

 the numher of cuttings on the yield of alfalfa hay. With the biennial and 

 perennial grasses and legumes the yields ranged from 2.5 tons per acre for 

 sweet clover to 5.6 tons for common alfalfa, while with tbe annual crops the 

 yields varied from 2.8 tons for Broom Corn millet to 5.8 tons for Black Amber 

 sorghum, all yields being reduced to a moisture content of 12 per cent. Black 

 Amber sorghum, Sudan grass, Kafir corn, and dent corn all produced maximum 

 yields when drilled in at the highest seeding rate. Common millet with an 

 average of 4 tons per acre outyielded all other sorts. Alfalfa cut 2, 3, and 5 

 times produced average yields of 3.47. 5.57, and 3.7 tons of hay per acre, respi 

 tively, for the three years 1915-17, inclusive. It is stated that there was a 

 marked weakening of the plants and thinning of the stand where the crop was 

 eut too frequently. 



[Report of field crops work in Antigua, 1910-17], F. Watts (//»/<. Dap*. 

 Agr. West In&ea, h'i>t. Agr. Dept Antigua, 1916-11, pp. 5-11, tS-15, 39-47).— 

 This reports a continuation of work previously noted (EL 8. EL, 88, p. 835). 

 Variety tests with sweet potatoes, cassava, eddoes, tannlas, and yams; trials 

 of corn and COttOD selections; and field plat tests "f rutabagas and mangel 

 wurzels are briefly described, similar work is reported for the experiment 

 station at Barbuda, 



[Culture experiments on moor soils], C. J. CHBI8TEN8KN {Tl&sskr. Plan- 

 teavl, ■'■'> (1918), Nn. 2, pp. 311-856). — The experiments here reported wen 

 conducted under state auspices at Hernlng, Denmark, from 1912 to 1917. The 

 layer of peat on the soil used had an average thickness Of leas than 1 ft. Afi 

 based On the analyses Of B series of samples the dry matter in the tipper 2 ft. 



of soil contained from Lfi Kb 2.4 per cent calcium oxid, 2.19 to 291 per cent 

 nitrogen, and 0.143 to 0.202 per cenl phosphoric add, while the upper fool 

 showed a potash content Of 0.027 per cent in the dry matter. The soil was well 

 mixed with sand, fairly well drained to at. nut One meter in depth, and practically 

 neutral in reaction. The general rotation followed included, in the order given, 

 oats and vetch or 8-rowed barley, rye. root crops, spring rye, carrots, Oats, 

 clover, and grass two yean. The annual fertilizer application per hectare given 

 grain ami urass consisted of 40 kg. (85.6 lbs. per acre) of phosphoric add in 

 Thomas slag or superphosphate, SO ku r . of potash In .".7 pet cent potash salt, 

 and ."><> kg. of nitrogen in nitrate "f soda. The root crops received annually in 

 the same substances from 80 to so kg. of phosphoric add, b'-<> kg. of potash, 

 and In the greater Dumber of seasons, also 30 kg. of nitrogen. 



Sowing rye about September 1 gave much better results than sowing at a 

 later date. Rye sown October in to November l failed, as a rule, to survive 

 the wilder. Frost during blossoming time greatly reduced the yield in P.M.'. 



and lDid, while in 1915 it prevented absolutely the formation of grain, although 



the yield of straw remained about normal. Winter rye gave a normal yield 

 only one year out of four. Spring rye sown about April 8 proved to be a much 

 safer crop, being, on account of Its later blooming period, less subject to late 

 spring frost and producing even In 191.". about one third of a normal yield of 

 grain. The variety of spring rye grown was I'etkns. 



Among six varieties of oats. Gray ranked first in average yield for five years 

 with 8,001 kg. of grain and 5,008 kg. of straw per hectare is,T7 bu. and 228 

 tons per acre, respectively). Golden Rain oats, ranking next, produced 2,644 



kg. of grain per hectare, but as the hull content of the two varieties WSfl 84.9 

 per cent and 26.9 per cent, respectively, the yields of grain without the hulls 

 were about tie- same. 



