Sulphur for wheat protein
Date
2012-03-13
Authors
Karamanos, R.
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Abstract
The effectiveness of supplementing Sulphur (S) to Canada west red spring (CWRS) and Durum
wheat to increased grain protein levels was assessed in a three-year 10 trial experiment. Five
rates of N (0, 36, 54, 72 and 90 lb/acre) and two rates of S (0 and 22 lb S/acre) were arranged in
a complete randomized block design with either four or six replicates. Soils at the sites varied
from S deficient to S sufficient, based on criteria utilized in western Canada. Application of 22
lb S/acre resulted in no yield increases; a protein content increase was obtained in a soil that
contained extremely low S levels in the 0-12 inch depth. Protein content in the grain was
directly related to N fertilization and growing season (May, June, July) precipitation. Hence,
deliberate and indiscriminate application of S to increase protein in CWRS and Durum wheat
grain is not a recommended practice, unless S deficiency is corrected in which case an indirect
benefit of increased grain protein might ensue.
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Part Of
Soils and Crops Workshop