■736 EXPERIMENT STATION RECORD. [Vol.43 



spacing of rows indicatrd that from 15 to 20 lbs. of seed per acre in rows the 

 width of ordinary corn rows would give maximum yields of both seed and hay. 



Tests of 10 cowpea varieties showed the leaders in seed production to be Groit 

 with 13.77 bu., New Era with 12.69 bu., and Cream with 11.77 bu. Brabhani, 

 Groit, and Black led in hay yields, producing 3.S6, 3.61, and 3.6 tons per acre, 

 respectively. An average of the hay and seed production of the six leading soy 

 bean varieties was 18.96 bu. of seed and 3.47 tons of hay compared with 10.89 

 bu. of seed and 3.54 tons of hay for the six best cowpea varieties. The hay 

 yields were equally abundant, but the superior seed production made soy-beau 

 hay more valuable pound for pound than cowpea hay. 



A mixture of Amber .sorghum and soy beans produced the highest yield of the 

 summer-sown forages with 2.88 tons of cured hay at Columbia and 3.3 tons at 

 Warrensburg. Canada field peas with oats was the best of spring-sown forages, 

 yielding 1.86 tons of hay at Warren.sburg and 1.51 tons at Columbia. A mixture 

 of rye and vetch proved best at Columbia as a fall-sown forage. 



Sudan grass sown at the rate of 5 lbs. per acre in 3-ft. rows gave a total 

 yield of 10.2 tons per. acre in three cuttings, while sowings at the rate of 25 

 lbs. in 8-in. drills, produced 9.3 tons. The yield was lower in the latter case, 

 but the hay was finer in quality because of the smaller stems. A summer-sown 

 crop planted July 10 at Columbia and .July 12 at Warrensburg yielded 1.6 tons 

 and 1.1 tons per acre, respectively, from a single cutting. 



Leading varieties of wheat in tests conducted at Wari-ensburg included Jones 

 Red Wave, with a yield of 24.4 bu. per acre, Michigan Wonder with 21.6 bu., 

 and Fulcaster 15 with 20.9 bu. A difference of 13.2 bu. was observed between 

 the acre yields of the highest and lowest yielding varieties. In wheat-breeding 

 investigations at Columbia it was noted that the Fulcasfter Selection 8-Y during 

 the years 1914 to 1918 yielded a yearly average of 6.1 bu. more to the acre than 

 the commercial parent variety. 



Oat tests showed Texas Red and Burt, medium early varieties, to be out- 

 standing, yielding at Warrensburg 10.9 and 17 bu. and at Marysville 60.8 and 53.2 

 bu., respectively. Winter oats did not survive the winter at Columbia, and this 

 experience, together with previous failures, led to the conclusion that this crop 

 was of slight value in the State. 



Severe drought caused a practical failure of the corn crop at both Marysville 

 and Warrensburg. The most significant result in the culture experiments was 

 secured from frequent shallow scraping of the surface. At Warrensburg this 

 practice produced 8.44 bu., compared with 4.97 bu. with deep cultivation of 

 corn surface planted in both tests. Studies of intertilled soy beans showed that 

 a material growth of beans, by whatever means combined with corn, produced 

 a decided reduction in the corn yield, but when the beans were planted late 

 they made but little growth, with no effect on the yields of corn. 



The big-boiled cotton, varieties outyielded the small-boiled type in the south- 

 east Missouri lowlands, Mebane Triumph and Cleveland producing 395 and 374 

 lbs. of lint, respectively, as compared with 3:i4 lbs. for Simpkins and 319 lbs. 

 for King. In cotton fei'tilizer tests the maximum yield, 436 lbs. of lint per acre, 

 was obtained from a treatment of 300 lbs. of acid phosphate and 35 lbs. potassium 

 chlorid, compared with 390 lbs. for the unfertilized check. 



Spring barley made average yields of 20.6 bu. per acre at Columbia and S'l 

 bu. at Marysville, with the Oderbrucker variety leading in both sections. This 

 crop is held" to be fairly safe in north INIissouri, but is not recommended for the 

 central and southern parts of the State. 



[Report of work with field crops in Washington], G. A. Olson, E. G. 

 ScHAFER, M. A. McCau., and G. E. Hiix (Washington Sta. Bui. 155 {1920), pp. 



