632 EXPERIMENT STATION RECORD. [Vol.38 



Amber and Orange sorghums, and Schrock kafir produced the heaviest yields 

 of forage, ranging from 8 to 5.8 tons per acre. An early prepared seed bed is 

 deemed best for sorghums, while fallow is not regarded as being advantageous. 

 Summer fallow for wheat proved to be the only method to insure a crop, 

 except the partial fallow system or double spaced corn stubble. For summer till- 

 age, a listed fallow is deemed superior to a plowed fallow. Turkey wheat, grown 

 in a rotation with sorghum and fallow produced 22.2 bu. per acre, while other 

 tests of alternate fallow produced yields of only 10 and 5 bu., respectively, for 

 listed and plowed fallows. Nebraska Calico, Cassel White Dent, Moore Calico, 

 Freed White Dent, and Towner White Dent, with yields ranging from 64.4 to 

 61.2 bu. per acre, were the highest yielding corn varieties tested. Corn on a 

 fallow seed bed produced an average of 31 bu. per acre, and after wheat, 20.4 

 bu. Sown in rows 84 in. apart, corn has given larger yields than when sown in 

 rows 42 in. apart, in average years, but in 1915 both methods produced an aver- 

 age yield of 27.2 bu. per acre. 



Mexican and Tepary beans have each yielded about 8 bu. per acre for three 

 seasons. Of the potato varieties tested, New York Rurals, Pearl, Green Moun- 

 tain, Triumph, and Irish Cobbler yielded from 73 to 115 bu. per acre in 1915. 



Western Orange and Red Amber sorghums are deemed best for forage on the 

 Dodge City substation, while Fink kafir and Yellow milo (when free from 

 chinch bugs) have produced good yields of gi-aiu. Western corn varieties have 

 produced an average of 51 bu., and eastern varieties of 35 bu., per acre. 



Sudan grass sown In cultivated rows 44 in. apart at the rate of 6 lbs. per 

 acre yielded 400 lbs. of seed per acre. Sown at the rate of 22 lbs. it yields 6,500 

 lbs. of field-cured hay per acre. 



Applications of from 3 to 20 tons of salt per acre have been made upon 

 bindweed-infested areas. A rate of 10 tons is deemed sufficient to kill the weed, 

 provided the small spots where the weed grows up are resalted. 



[Report of field crops work at the Missouri Experiment Station, 1916— 

 17], C. A. Helm, J. B. Smith, W. C. Etheridge, E. M. McDonald, and Rachel 

 Holmes (Missouri Sta. Bui. 151 (1917), pp. ^O-U, 62, fig. i).— This briefly re- 

 ports the progress of work continued along the same general lines followed 

 in preceding years (E. S. R., 37, p. 730), embracing cultural and variety tests 

 with soy beans, cowpeas, alfalfa, oats, barley, corn, wheat, and forage crops 

 at various experimental centers in the State. 



Of 84 varieties of soy beans tested for seed production at Columbia the 

 highest-yielding varieties were Morse with 28.8 bu., Austin with 28.4 bu., 

 Virginia with 27.2 bu.. Mikado with 26.1 bu., and Columbia with 25.6 bu. per 

 acre. At Maryville, Peking, Sable, and Black Beauty were the leading vari- 

 eties, with yields of 16.9, 15.4, and 14.9 bu. per acre, respectively. At Warrens- 

 burg 9 varieties were tested for liay production, the leading varieties witli 

 their respective acre yields of cured hay being as follows : Mikado 3.9 tons, 

 Wilson 3.6, and Black Beauty 3.5. Cultural tests at Columbia indicated that 

 better yields of seed and hay were obtained from plantings in 8-in. rows be- 

 tween June 1 and 15, with the seed drilled in at the rate of 42 lbs. per acre. 



In variety tests with cowpeas for hay production at Columbia, Groit, Whip- 

 poorwill. Clay, Coffee, and Red Ripper were the leading varieties, and at War- 

 rensburg and Maryville, Whippoorwill. In cultural tests at Columbia the 

 largest yields of hay were obtained by drilling in the seed at the rate of 

 5 pk. per acre in rows 16 in. apart. 



Afalfa variety tests indicated a marked superiority of northern-grown seed 

 over southern-grown seed. 



The highest-yielding oat varieties at Columbia were Green Russian, Big 

 Four, White Russian, and Kherson, with yields of 30, 28.6, 28.2, and 27.8 bu. 



