WSU Tree Fruit Research & Extension Center

Organic & Integrated Tree Fruit Production

Thursday, January 18, 2018

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3885. Leggett, G.E., H.M. Reisenauer and W.L. Nelson. 1959. Fertilization of dryland wheat in eastern Washington.. WA Agr. Expt. Sta. Bull. #602.
This bulletin presents the results of 5 yrs of experimenting with the fertilization of wheat. During 1953-1957, 112 fertility experiments were conducted on dry land wheat throughout eastern Washington. Nitrogen fertilization significantly increased yields in 92 of the 112 experiments conducted. Whether nitrogen fertilization increased wheat yields depended largely on the amount of moisture available to the crop. Because of the decline in soil organic matter through years of cropping, the amount of available N released by soils is no longer adequate to support high wheat yields. The introduction of high yield varieties and improved tillage has increased yield potential, and this has increased the demand for N. Application rates (lb N/ac): <10" rainfall - 20-40; 10-15" - 20-60; >15" - 30-80. Different types of N fertilizer did not change yields. T: Summary of the effects of N on wheat yields, 1953-57; effect of N on yield from fallow ground.

4106. Massee, T.W., R.C. Rosenau, C.W. Case, and C.G. Painter. 1975. Cropping and fertilizing wheat and barley in the Camas Prairie.. ID Agr. Expt. Sta. CIS #278.
Camas Prairie rainfall 14-17"/yr, mostly as winter snow; fallow does not often increase stored soil moisture; fallow does increase N, and control weeds; suggest annual cropping on medium texture soils; often need 1 lb S for each 10 lb N fertilizer; wheat 24 bu/ac with 75 lb N/ac (with sulfur); on fallow, only needed 25 lb N/ac; yield potential always higher on fallow (rotation effect?) for barley and wheat.

4982. Painter, C.G. and G.O. Baker. 1960. A guide for fertilizing Idaho farm crops.. ID Agr. Extension Serv. Bull. #325, Combined Series.
First guide (?) published; 1958 - 100,000 T of commercial fertilizer used in Idaho; fertilizer not a cure-all; irrigated and dryland recommendations; wheat (annual crop zone) after fallow 30N, after green manure 0N, after grain 50N, after peas 40N; wheat (fallow zone) after fallow 20N, after green manure 0N, after grain 30N; wheat (tetonia) N not generally needed. T: fertilizer recommendations.

5735. Rasmussen, P.E. and C.R. Rohde. 1988. Stubble burning effects on winter wheat yield and N utilization under semiarid conditions.. Agronomy J. 80:940-942.
Burning vs. not burning was examined at 3 nitrogen levels over 6 years (3 crops). Burning had no effect on grain yield or grain N uptake. Burning increased straw yield when wheat was fertilized by N, but had no effect on straw N uptake. Burning did not decrease foot rot incidence or severity, but did reduce downy brome density. T: Effects of stubble burning and N fertilization on grain and straw of winter wheat 1980-85. Effect of stubble burning on foot rot infection. Effect of stubble burning on downybrome infestation.

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