Intensively managed irrigated hard red winter wheat production Public Deposited

http://ir.library.oregonstate.edu/concern/administrative_report_or_publications/qj72p7516

Published December 1987. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog:  http://extension.oregonstate.edu/catalog

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  • Hard red winter wheat will produce grain yields comparable to soft white winter wheat in intensively managed irrigated fields. Planting should be early enough in the fall for the plants to initiate tillers and crown roots before winter dormancy. Seeding about 80 pounds of seed per acre will provide an optimum stand and yield. Narrower row spacing, such as 4 to 7 inches, will produce higher grain yields than wider row spacings such as 12 to 18 inches. The bulk of the nitrogen and sulfur fertilizer, 100 to 150 pounds N and 20 pounds S per acre, should be applied during late tillering. From 30 to 50 pounds N per acre should be applied during heading or flowering to insure a marketable protein content in the grain. Applying more S than needed for normal plant nutrition has no effect in increasing grain protein. Soil sampling for nitrate and sulfate sulfur just before spring growth starts is recommended. Soil testing after the wheat has resumed growth in the spring is of questionable value for predicting the need for N and S fertilization. Tissue tests are not reliable in predicting the need for N and S fertilization except where major deficiencies exist.
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