Time of seeding wheat and canola after spring banding of anhydrous ammonia
Peer Reviewed StatusNon-Peer Reviewed
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A study was carried out on a Dark Brown Scott loam at Scott, Saskatchewan to determine the effects of time of seeding after banding of anhydrous ammonia at two depths in spring on plant stands, grain yields and quality of wheat and canola. Observations of emergence, early growth and determinations of plant populations and yields indicated no detrimental effects from anhydrous ammonia banded at 30 cm spacing at depths of 10 or 15 cm when seeding was done at 22 cm row spacing at recommended depths for wheat and canola immediately after application of anhydrous ammonia or during the following three to eight day period. Differences in stands and yield from different dates of seeding appeared to be related to precipitation and changes in soil moisture and seedbed conditions subsequent to the first seeding date. Plant populations, grain yield increases, and % protein and % oil in grain (canola) on plots where anhydrous ammonia was banded at 10 cm depth were generally equal to or greater than where ammonia was banded at 15 cm depth. Seeding during most of the study carried out in a direction parallel to the anhydrous ammonia bands so that seed rows were at various distances laterally from the ammonia bands. However, in 1987, seeding in a direction perpendicular to the ammonia bands did not result in any visual or measured harmful effects on stands or yields of wheat or canola attributable to the anhydrous ammonia.
Part OfSoils and Crops Workshop
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