WSU Tree Fruit Research & Extension Center

Organic & Integrated Tree Fruit Production

Monday, June 18, 2018

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915. Boawn, L.C., C.E. Nelson, F.G. Viets, and C.L. Crawford. 1960. Nitrogen carrier and nitrogen rate influence on soil properties and nutrient uptake by crops.. WA Agr. Expt. Sta. Bulletin 614.
Irrigated soils near Prosser. Native soil. Soil pH dropped from 7.4 to 6.0 (0-8") with ammonium sulfate at 160 N/ac. Effect of ammonium nitrate was less, while calcium nitrate had no effect on pH. Fertilizer N recovery was 75-85%. N application increased Mn uptake, but no trends for other elements.

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