1919] FIELD CROPS. 637 



tion of work previously noted (E. S. R., 38, p. 632), enfbracing variety and 

 cultural tests with soy beans, cowpeas, cotton, corn, grain sorghums, oats, 

 wheat, and barley, together with field tests of various forage crops, and a 

 comparison of northern-grown with home-grown seed potatoes. 



A mixture of oats and Canada field peas, with a yield of 3.1 tons of cured 

 forage per acre, gave the best results among spring-sown forage crops tested 

 at Columbia. The best summer forages, included Amber sorghum, White 

 Kafir, and a mixture of White Kafir corn and soy beans with yields antounting 

 to 6.25, 4.58, and 4.85 tons per acre, respectively. At V/arrensburg a mixture 

 of oats and Canada field peas proved best for spring forage and one of soy 

 beans and sweet sorghum for surLfmer forage. In cooperative tests with sweet 

 clover, failures were reported wherever oats was used as a nurse crop. Sudan 

 grass seeded in rows S ft. apart produced 2.6 tons of cured forage per acre at 

 Warrensburg. Seeded after rye at Columbia, it produced 1.56 tons and in a 

 mixture with soy beans, 4.2 tons. 



Of 84 varieties and strains of soy beans tested at Columbia the leading sorts 

 produced from 18.3 bu. of seed per acre for Morse to 20.8 bu, for Virginia, and 

 from 3.2 tons of hay for Buster Brown to 4.5 tons for Chiquita. At Mary- 

 ville, the leading varieties were Peking, Wilson, and Virginia, with yields of 

 19.4, 18.9, and 17.5 bu. per acre, respectively. At Warrensburg, Mongol, Morse, 

 and Mikado were best with respective yields of 17.9, 17, and 14.3 bu. On the 

 Russell farm better yields of both seed and hay resulted from seedings made 

 from May 15 to June 15 than from earlier or later seedings. Practically no 

 difference in yield resulted from seedings made in 16-in. and 42-in. rows, while 

 drilling Jet soy beans in rows 8 in. apart gave the same yields when seeded 

 ai the rate of 90 lbs. per acre as at a rate of 120 lbs. At Maryville, seeding at 

 the rate of 25 lbs, per acre in rows 3 ft. apart gave slightly larger yields than 

 lower rates of seeding, while at Warrensburg a 30-lb. seeding rate produced 

 13.7 bu. per acre and a 20-lb. rate 12.8 bu. New Era cowpeas produced 15.1 

 bu. of seed per acre as conipnred with 12.2 bu. for Medium Yellow soy beans. 

 Leading varieties of cowpeas and soy beans compared for hay production gave 

 average yields of 3.4 and 3.1 tons per acre, respectively. 



Shallu, White Kafir corn, and Standard milo maize with respective yields of 

 81.3, 63, and 43.7 bu. per acre were grown at Warrensburg in comparison with 

 Commercial White, St. Charles White, and Learning Yellow corn, which produced 

 69.3, 58.3, and 47.3 bu., respectively. 



In variety tests with cotton early maturing strains showed a marked super- 

 iority over late maturing sorts. King Improved with 380 lbs. of lint per acre 

 and Simpkin Prolific with 330 lbs. were the best early varieties, and Mebane 

 Triumph with 260 lbs. and Rowden with 213 lbs. the best late varieties. 



Bigg Seven Ear and Cock Prolific corn grown at Kennett yielded at the rate 

 of 38 and 33 bu. per acre, respectively, as compared with 32 bu. for Reid Yel- 

 low Dent and 30 bu. for St. Charles White, the two best native sorts. Cultural 

 tests with corn at Warrensburg resulted in a yield of 59 bu. per acre for sur- 

 face planting with normal cultivation, 70 bu. for list planting with nornfal cul- 

 tivation, and 73 bu. for surface planting with late cultivation. At Maryville, 

 with normal cultivation, surface planted corn produced 75 bu. per acre and list 

 planted corn 84.2 bu. 



Leading varieties of wheat tested at Columbia produced from 23.8 bu. per 

 acre for Poole to 30.6 bu. for Harvest Queen. At Warrensburg the yields of 

 the best sorts ranged from 23.5 bu. for Fulcaster to 27.9 bu. for Turkey. Se- 

 lections of Pole, Early Ripe, and Fulcaster grown at Columbia have produced 

 4-year average yields of 35, 27.8, and 42 bu. per acre, respectively, as compared 

 with yields of 34.3, 33.6, and 37.1 bu. for the original stock. 



