FIELD CROPS. 425 



clover. One of the objects of the exporiment is to test the effect of the lime 

 upon the potato crop in 1!)0!) and 1910. 



[Work with field cropsl, G. E. Nesom { Philippine Agr. Rev. [English Ed.], 

 2 (1909). Xo. 1. pp. 2^/-3//). — Brief notes ou cultural tests with corn, alfalfa, 

 sunn hemp and various leguminous fodder crops, grasses and rice are given. 

 The yields are reported and the more promising varieties mentioned. 



Sunn hemp {Crotularia juneea) yielded seed at the rate of 2..395 kg. per 

 hectare (about 2.132 lbs. per acre). Analyses of the meal and hulls of this seed 

 are reported. Venezuela black cowpea planted January 13 ripened its first 

 seed March 30. This variety produced a heavy yield of seed, and a rank growth 

 of vine. A small plat of Lyon velvet bean planted January 11, 1908. required 

 5 months to mature, and yielded seed at the rate of 2.200 kg. per hectare (about 

 1,958 lbs. per acre). The Florida velvet bean is reported as growing fairly well 

 on the stiff soil at Albang, and as giving a greater amount of green forage per 

 acre than any other leguminous plant. 



Guinea grass is reported as having produced 78 tons of green grass per 

 hectare in one instance and a yield of 41 tons during the period of 61 days in 

 another instance. The green forage production of teosinte in one experiment is 

 recorded as 62.313 kg. per hectare (about 27.67 tons per acre) in 141 days. 

 Pinursigui rice as compared with other varieties had the shortest growing 

 I)eriod and produced the best yield. This variety was harvested October 25, 

 128 days after seeding, and produced 2,740 kg. per hectare (about 2,439 lbs. 

 per acre). A second crop harvested December 17, yielded 25 kg. per hectare. 



Report of the chemical control station and seed control station at Trondh- 

 jem, 1907, E. Solberg (Bo: tStat. Kciu. Kontrolstat. og Fnikontrolanst. Trondh- 

 ■jem 1901, pp. .'iS). — This I'eports chemical analyses of feeding stuffs, soils, fer- 

 tilizers, dairy products, etc., and of seed analyses made during the year: experi- 

 ments on 22 farms with top-dressing and miscellaneous fertilizer trials on 

 meadows; and studies of the residual effects of previous fertilization. 



Station report of the chemical and seed control station at Trondhjem, 1908, 

 E. Solberg (Ber. Stat. Kem. Kontrolstat. og Frokontrolanst. Trondhjem 1908, 

 pp. Jfl). — In 1908 this station examined 447 samples of feeding stuffs, 254 sam- 

 ples of soils, 158 samples of fertilizers, and 699 samples of seeds. 



In fertilizer experiments with grass it was found that a top-dressing of 1.5 

 to 2 kg. of nitrate of soda and 5 kg. each of Thomas phosphate and kainit 

 per hectare increased the yield of hay per hectare by about 320 kg. on the 

 average, the increase being 230 kg. the first year and 80 kg. the second. 



Report of the Shatilov Agricultural Experiment Station, V. Viner (Otchet 

 Shatilov. Selsk. Khoz. Opuitn. Stantzil, 2 (1907), pt. 1, pp. 291; ahs. in Zhur. 

 Opuitn. Agron. [Russ. Jour. Expt. Landic], 9 (1908), No. 5, pp. 638-6U).— The 

 results of 9 years' experiments show that the use of a complete fertilizer in- 

 creased the average yield of rye during the last 6 years by 175 per cent. Min- 

 eral fertilizers exerted a greater influence ou the yield of grain than on the 

 yield of straw. Phosphoric acid was the most effective element, and there 

 was apparently no difference in effectiveness between soluble and insoluble 

 forms. 



Twelve years' results at the Odessa Experiment Station, V. Rotmistrov 

 (Zap. Imp. Obshch. Selsk. Khoz. Yuzh. Ross., 78 (1908), Xo. 1-2, pp. 26-76).— 

 Different depths of plowing chernozem for different crops were compared. 

 The general conclusion is drawn that jilowing the chernozem in the locality 

 of Odessa deeper than 3i in. is injurious. 



Report for the year 1908 of the trade and agriculture of Poland and 

 Grodno, C;. Bayley (Diplo. and (Jons. Rpts. [London], Ann. Ser., 1909, Xo. .'(232, 



