FIELD CROPS. 1059 



sources of phosphoric acid, potash, and nitrogen are pointed ont, and ilhistrations 

 are given of '.'> tyi)es of plant food mixtures. 



Fertilizer analyses, fall season, 1902, B. \V. KiLCiORE {Biil. Xmili <'<irolina 

 ,Stf(tr Jill. A(jf., 24 {1903), No. :J, pp. 4->-5G). — Analyses and valuations of 194 samples 

 of fertilizers are reported. 



Fertilizer analyses, spring season, 1903, B. W. Kiugokk (llnl. Norlh. Curo- 

 Ihid State Bd. Agr., 34 {1903). \'o. 3, p. 31). — This bulletin reports analyses and 

 valuations of 59 sami)k'S of fertilizers. 



Analyses of commercial fertilizers, J. L. Hills and C. II. Jonks ( Vcrttmnt Sta. 

 Bui. 98, pp. 27-4S). — This IjuUetin gives the main provisions of the fertilizer law as 

 amended by the general assembly of 1902, discusses the valuation of fertilizers, and 

 reports analyses and valuations of o9 samples of fertilizers. A table showing the 

 a\'erage composition of different brands examined during the past 5 years is given. 



A consideration of water in its relation to the fertilization of the soil, 

 with some analytical studies of the mud of the River Piave, R. Onok {Slaz. 

 Spcr. Agr. Ifal., 36 {1903), Xo. i2, pp. 107-132). 



FIELD CROPS. 



Report of the agriculturist, A. H. Danielson {Colorado Sta. Bpit. 1902, pp. 131- 

 136). — Brief outlines of the ilifferent kinds of experimental work with field crops 

 conducted at the station are given. In cooperation with this Department exj^eri- 

 ments are conducted with sugar beets, grasses and forage plants, and grains, includ- 

 ing winter wheats. The other experiments comprise culture and variety tests with 

 wheat, spelt, ennner, einkorn, alfalfa, brome grass, and field beets. Fertilizer tests 

 with nitrate of soda for wheat and oats are also in progress. 



Forage crops, grasses, alfalfa, clovers, etc., W. R. Dodson {Louisiana Stas. 

 r>nl. 12, 2. set., pyp. 95, pis. S). — Notes are given on the present status and methods 

 of cultivation of a large number of forage plants, including alfalfa, cowpea, Spanish 

 peanuts, lespedeza, red clover, crimson clover, white clover, soy bean, burr clover, 

 velvet bean, hairy vetch, beggar weed, various varieties of sorghum, oats, winter 

 l)arley, rye, Bermuda grass, carjiet grass, large paspalum, crab grass, Italian rye 

 grass, teosinte, redtop, smut grass, Johnson grass, barnyard grass, switch cane, res- 

 cue grass, meadow barley, corn stover, dwarf Essex rape, and cas.sava. The cultiva- 

 ti(jn of alfalfa is gradually becoming more extensive in Louisiana, especially along 

 the Red River bottoms where very favorable conditions are found. The bulletin 

 contains a copy of a paper on alfalfa read before a farrners' institute by W. L. Foster. 

 Experiments with velvet bean showed that both as a forage and a fertilizer crop this 

 plant is fully equal if not superior to cowpea. 



Experiments with phosphatic fertilizers in 1900-1901, O. Reitmair {Ztschr. 

 Laiidir. ^'ersKclt.^ir. (k.^tcrr., 6 {190.J), Xo. 2, pp. 9.5-194, ni'ij' 1 )■ — The results of exten- 

 sive cooperative tests with phosphates conducted throughout Austria are given in 

 tables. The method of conducting these tests is described, the use and value of 

 phosphoric acid is discussed, and the general effect of this element in different forms 

 is pointed out. The normal application consisted of 60 kg. of phosphoric^ acid per 

 hectare. In all tests sulphate of ammonia furnishing 26 kg. of nitrogen and 40 per 

 cent potash salt furnishing 42 kg. of potash per hectare were used. 



Winter rye was much more responsive to phosphates than winter wheat. Of the 

 different forms for wheat and rye superphosphate was the most effective. Com- 

 paring the results obtained with rye Thomas slag ranked very close to superphos- 

 phates in effectiveness and proved even more profitable. These 2 forms were closely 

 followed by Algerian and Belgian phosphates. Of the phosphoric acid furnished in 



28297— No. 11—03 3 



