1919] FIELD CROP 431 



Gianl Eckendorf, with a yield of 28.46 tons per acre, was tir.-t In variety t* its 

 witii mangels. Sugar beets on similar land and grown under similar condition! 

 produced L7.16 tons per acre. Mangels are said to be much more difficult to 

 -iiu successfully than sugar beets 



In potato variety tests, Rural was first with a yield of 484.9 bu. per acre, 

 with Red Triumph and Downing next In order with 156 bu. and 466.1 bu., re 

 spectively. A date-of-planting teal was made in which potatoes were planted 

 at four weekly intervals beginning June 11. The yields decreased consistently 

 uitii ;m advance <>r the planting date, ranging from 272.6 bu. per acre tor Eureka 

 seeded June u to 126 bu. for the July l! planting, and from 342.2 bu. for the 

 .rune 11 planting of Pearl to 203.9 bu. for the July '_' planting. Rural seeded 

 July - produced 213.7 bu. It is suggested that potatoes may prove satisfactory 

 I'm- recropping blown-out sugar-beet land. Potatoes following alfalfa in the 

 Irrigated rotation experiments produced an average yield of 298 bu. per acre 

 and following manure 193.0 bu., as compared with 13s. t; bu. where potatoes v. 

 grown without alfalfa or manure. The average increase in yield for a 0-year 

 period has amounted to 104 bu. per acre after alfalfa and 48.1 bu. alter manure. 



Dry-Land White corn, with a yield of 71.5 bu. per acre, was first in variety 

 tests. Calico corn from locally grown seed produced 03.8 bu. per acre, while 

 that from seed grown in the eastern part of Nebraska yielded only 37.4 bu. of 

 inferior corn. In the irrigated rotation experiments corn produced on the aver- 

 age 48.5 bu., while corn following alfalfa showed an increase of 14.0 bu. Corn 

 following oats is said to have shown a slight advantage over that following a 

 cultivated crop. Planting coin after sugar beets can not be recommended. 

 Nebraska White and Hagner Yellow, with yields amounting to 10.9 and 1.">.9 

 tons per acre, respectively, were the highest yielding varieties in silage tests. 

 Russian sunflowers produced 22.93 tons of silage. 



Red .Mexican, topary, large navy, small navy, and pinto beans produced 17.4, 

 16.2, 15.5, 1 1. and 13 bu. per acre, respectively. 



In cereal variety tests the yields of spring barley ranged from 37.2 bu. per 

 acre for Bald to 79.4 bu. for Trebi, of spring oats from 64.4 bu. for Kherson to 

 76.4 bu. for Newmarket, and of spring wheat from i!>.4 bu. for Galgalos to 52.9 

 bu. for Beloturka. 



Oats grown in the irrigated rotation experiments were badly damaged by 

 grasshoppers, but produced at the rate of 71.(1 bu. per acre as an average for all 

 plats. The residual effect of manure applied to the previous crop produced an 

 increase of 17.5 bu. per acre, and oats following alfalfa showed an increase of 

 !!>.") bu. Smaller yields were obtained where oats followed a grain crop than 

 where they followed potatoes or beets, while still larger yields were obtained 

 where they were grown on disked corn land. 



Wheat after alfalfa produced 40.2 bu. per acre, and after oats '_'.".. 7 bu. Winter 

 wheat grown continuously for years yielded 28.3 bu. 



[Report of field crops work at the Umatilla reclamation project experiment 

 farm, Oreg.. in 1917], K. W. Ai.i.kx (!'. x. 1>< i>t. Agr., Bur. Plant Indus., ^York 

 Umatilla Expt. Farm. inn. pp. .''. 11-1',. tt-20, 87-80, flg. /).— In a continuation 

 of work previously noted (E. S. R., 38, p. 431) this describes the progress of 

 fertilizer tests with corn, irrigation experiments with alfalfa, variety trials 

 with pasture grasses, and observations on vetch seed production, together with 

 a report on crop rotation and lysimeter Investigations conducted by 11. K. 

 Dean. 



The yields of corn per acre ranged from 3.15 tons of field-cured corn for the 

 no fertilizer plat with an annual vetch crop to 7.05 tons for the plat receiving 

 blood meal. 



