436 EXPERIMENT STATION RECORD. tVol. 37 



resulting in an average yield of 5.7 tons per acre and of 1.85 tons per acre-foot 

 of water. In all three stages the 6-in. applications gave the lowest and the 

 12-in. the highest yields, with but little variation in yield per acre-foot of water. 

 A gradual decrease in yield was noted with the same applications made as the 

 wilting stage advanced. Alfalfa responded better than wheat and potatoes to 

 heavy applications of water. 



The highest clover yield, 6.97 tons per acre, was secured from a total of 

 57 in. of water in 12-in. applications (the first application being 9 in.), with a 

 yield of 1.47 tons per acre-foot of water. The lowest yield, 2.71 tons, was se- 

 cured with four 6-in. irrigations and gave 1.35 tons per acre-foot of water. 

 The results indicate that clover can not be allowed to reach the wilting stages 

 without a material decrease in the yield of hay. The nitrogen content varied 

 Inversely with the total yield of forage per acre. 



Sudan grass yielded 3.8 tons of forage and 1.912 lbs. of seecl per acre in 

 the 1016 trials and is especially recommended for seed production for well- 

 drained soils of Nevada. 



Field trials with root crops gave average yields of 15.73 tons of roots for 

 Our Ideal mangels and 12.06 tons for sugar beets, with an average sugar con- 

 tent of 4.5 and 19.5 per cent, respectively. In date-of-planting tests with sugar 

 beets the yield varied from 20.79 and 20.35 tons for beets planted April 23 and 

 30, respectively, to 4.79 tons for beets planted .July 2. Nevada-grown sugar 

 beet seed yielded at the rate of 20.9 tons per acre, with 19.5 per cent sugar and 

 82.1 per cent purity of juice, while seed of Russian origin produced 20.8 tons 

 per acre, with 17.5 per cent sugar and 75.3 per cent purity of juice. 



Sudan grass, beans, and field peas were compared for seed production. The 

 Kaiser field pea. with an average yield of 1.667 lbs. per acre, was highest and 

 California Mexican Large bean lowest, with 505 lbs. Sudan grass gave an 

 average yield of 1,506 lbs. A similar test with Sudan grass, millet, and field 

 peas for hay production resulted in an average yield of 2.7 tons per acre with 

 Siberian millet, while Bangalia ficTd pea was lowest, \Aith 1.27 tons. Sudan 

 grass gave an average yield of 2.5 ton.s and Green Canada field pea an average 

 yield of 2.1 tons per acre. 



Field crops for late planting, C. S. Knight {Nevada Sta. Bui. S8 (1917). pp. 

 15, figs. 5). — The value of wheat and oats for hay, and of potatoes, sugar beets. 

 Sudan grass, and millet for late planting, due to a late, cold spring, is discussed 

 in a popular manner, including cultural directions. 



[Field crops] (Izv. Khartov. Oblast. Sclsk. Khoz. Opytn. Sta., Otd. Polevod., 

 No. S (1915), pp. Xn+112, fig. 1).— Field experiments conducted at the Khar- 

 kov Experiment Station in 1912, 1913, and 1914 are reported, and include 

 fertilizer, manurial. variety, and cultural tests with rye, com, sorghum, spring 

 wheat, winter wheat, barley, oats, millet, and potatoes. 



[Field crops], E. A. Nobbs (Rhodesia Agr. Jour., IS (1916), Nos. Jf, pp. .^7^- 

 488; 5, pp. 659-672. pi. 1). — Field tests with varieties, fertilizers, and cultural 

 methods on various crops at the Gwebl Experiment Farm for the season of 

 1915-16 are reported. 



[Field experiments], A. W. K. De Jong and C. va.n Rossem (Dcpt. Landb., 

 Nijv. eii Handel [Dutch East Indies], Meded. Agr. Chem. Lab.. No. 12 (1916). 

 pp. 150, pi. 1, figs. ^). — This is a detailed report of field experiments In the 

 testing of fertilizers, stable manure, and crop rotations for the year 1914-15. 



[Field crops] (Rpt. Nagptir Expt. Farm [India], 1915, pp. il, 22). — A glos- 

 sary of the botanical. EIngllsh. and vernacular names of a number of crops 

 grown in India is given, together with several local agricultural terms and 

 their meanings. 



