WSU Tree Fruit Research & Extension Center

Organic & Integrated Tree Fruit Production

Tuesday, September 25, 2018

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Search results on 09/25/18

2043. Fowler, D.B. and J. Brydon. 1989. No-till winter wheat production on the Canadian prairies: placement of urea and ammonium nitrate fertilizers.. Agron. J. 81:518-524.
A practical snow management system, which utilizes no-till seeding into standing stubble immediately after harvest, has permitted expansion of winter wheat production in western Canada. This study examined grain responses to urea and ammonium nitrate fertilizer banded and broadcast at seeding, or broadcast in the late fall or early spring. A moisture shortage biased the results. Fall banding prior to seeding helped reduce volatilization losses of urea (which were as much as 50%), but presented other problems and did not outperform broadcast ammonium nitrate.

5973. Roth, G.W., R.H. Fox, and H.G. Marshall. 1989. Plant tissue tests for predicting nitrogen fertilizer requirements of winter wheat.. Agron. J. 81:502-507.
Three plant tissue tests for estimating supplemental N for winter wheat were evaluated: stem nitrate concentration, whole-plant N concentration, and crop uptake N. The whole plant test accounted for the most variation in relative yields, had the lowest spatial variability, and appeared to be best suited for the current wheat management system in PA. The stem nitrate test was most sensitive to short-term changes in soil N supply.

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