WSU Tree Fruit Research & Extension Center

Organic & Integrated Tree Fruit Production

Saturday, January 19, 2019


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Search results on 01/19/19

365. Anon.. 1990. Canola's sulfur requirements.. Agrichemical Age, February 1990 p. 24-25.
Experience from western Canada indicates the importance of proper sulfur fertilization for rotations including canola. Canola has a high sulfur requirement. A 35 bu. canola crop removes 20-25 lb S/ac, about twice that of a 50 bu. wheat crop. Canola is highly responsive to sulfur fertilization. Soil testing can help determine S needs, as can early season tissue testing. Researchers suggest that the tissue contain one part S for every 7 parts N. Sulfur deficiency symptoms in most crops first appear on younger, upper leaves. Signs unique to canola are delayed and prolonged flowering; pale, whitish flowers; erect leaves on the upper part of the plant; young leaves cup inward and develop a pink, reddish or even purple color on the underside; seed pods will be small and poorly filled.

3964. Mahler, R.L. and G.A. Murray. 1986. Northern Idaho fertilizer guide - Winter rapeseed.. ID Agr. Expt. Sta. CIS #785.
Need to calculate potential yield; use soil N test; also test for P,K,S, Boron. Split N application - 50% maximum for fall application; apply P and K before planting.

7841. Koala, S., J.R. Sims, H. El-Attar, and M. El-Halfawia. 1988. Phosphorus deficiency in semi-arid tropics and implications for grain legume production. p. 205-216.. IN: R.J. Summerfield (ed.). World Crops: Cool Season Food Legumes..

7878. Lockerman, R.H., D.A. Buss, G. Westesen, and J.R. Sims. 1985. The effect of soil moisture on growth and yield of fababean.. FABIS 11:15-17.

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