FIELD CROPS. 829 



The results of various tests with alfalfa grown for soil-improvement and 

 forage purposes as noted show Grimm, Peruvian, Western Grown, Caucasus, 

 and Montana to have been the best five. Data show that three cuttings a year 

 secure a larger yield than two cuttings, but the author concludes not suffi- 

 ciently large to cover the expense of the third cutting. Irrigation experiments 

 on a small scale showed weekly irrigations to be more productive with alfalfa 

 than at two-, three-, four-, five- or six-week periods. It is noted, however, that 

 these conclusions are drawn from only one year's work. 



Various tests with potatoes showed Early Rose, Colorado, Mammoth Pearl, 

 and Burbank to be the best yielders out of 12 varieties. 



The cause of the spotted character and general nonproductivity of soils iu 

 portions of the project was found to be the presence of excessive alkali salts. 



Forage and silage crops for Oklahoma, O. O. Churchill {Oklahoma Sta. 

 Circ. 34 {1914), pp. 3-15, fig. 1). — For Oklahoma conditions the following forage 

 and silage crops are discussed : Bermuda, brome, Colorado, Sudan, and Johnson 

 grasses, timothy, orchard grass, redtop, blue grass, fescue, curly mesquite, 

 and native grasses, alfalfa, cowpea, sweet Japan, burr, medium red, mammoth, 

 alsike, and white clovers, and vetches. As coarse fodders are mentioned grain 

 sorghums, canes, corn, teosinte, pearl millet, millets, and rape, and as silage 

 crops, grain crops, peanuts, alfalfa, cowpea s, corn, cane, and grain sorghums. 



Grains and forage crops {Wiscansin Sta. Bui. 24O {1914), PP- 26-30, figs. 

 4). — This consists of brief notes referring to the work in progress by R. A. 

 Moore and E. J. Delwich in regard to testing varieties, and breeding and se- 

 lection of rye, wheat, soy beans, clover, and field and canning peas, and methods 

 of curing seed corn at the station and elsewhere in the State. 



Yields per acre of different classes of farm crops, C. A. Zavitz {Ann. Rpt. 

 Ontario Agr. Col. and Expt. Farm, 39 {1913), pp. 120-188, figs. 6). — Notes on 

 the year's work as to the effect of change of seed, rotations, seed selection, plant 

 selection and hybridization, cooperative experiments, oat smuts, and different 

 combinations for grain productions, and variety tests of cereals, buckwheat, 

 legumes, flax, millet, sunflowers, sorghum, potatoes, roots, sugar beets, rape, 

 cow cabbage, and kale are reported. 



[Field crop experiments], L. Smith {Rpt. Agr. Expt. Sta. St. Croix, 1912-lS, 

 pp. 4-39, 46-53, 60-65, 71, 72).— Results of manurial, cultural, and variety testa 

 are given with sugar cane, cotton, sweet potatoes, x>otatoes, maize, sorghum, 

 Lyon beans, Canada beans, cowpeas, pigeon peas, horse beans, guar, woolly 

 pyrol, Porto Rico beans, peanuts, spineless cactuSj and analyses of cotton and 

 some legumes. 



[Manurial, variety, and cultural experiments], D. A. Gilchrist {County 

 Northiimh. Ed. Com. Guide to Expts. 1914, pp. 9-84, flff- !)• — This gives some 

 results of manurial treatments of meadows and pastures in terms of pounds of 

 gain of cattle or sheep, and of variety tests with cereals and potatoes, mangels, 

 cabbages, sugar beets, thousand-headed kale, swedes, and turnips. 



Field experiments, 1913 {Dept. Agr. and Tech. Instr. Ireland Jour., 14 

 (1914), -ZVo. 2, pp. 252-303). — This paper gives results of variety tests of barley, 

 potatoes, mangels, oats, turnips, and wheat, and manurial tests with barley, 

 hay, pasture, potatoes, mangels, oats, and turnips which involved the use of 

 nitrate of soda, superphosphates, kainit, basic slag, barnyard manure, liquid 

 manure, sulphate of ammonia, muriate of potash, and seaweed and salt on both 

 upland and peaty soils. 



On peaty soils containing from 17.5 to 32.9 per cent organic matter and In 

 preliminary experiments, each of the manurial applications (1) 1 cwt. nitrate 

 of soda, 2 cwt. superphosphate, and 2 cwt. kainit per acre, (2) 1 cwt. nitrate 

 of soda, 2 cwt. basic slag (high grade), and 2 cwt. kainit, and (3) one-half 



