Evaluation of seed placed fertilizer rates

Questions that now remain unanswered are urea impacts on calcareous soils and the role that ammonium sulphate might play in various mixes with urea and what the safe rates of combined N,P,K and S fertilizers might be.

IPNI-1995-CAN-SK13

Across western Canada, there is a significant trend towards one pass seeding systems in which seeding and fertilizing can be accomplished in one field operation. This movement has resulted in a sharp increase in the demand for information regarding safe rates of fertilizer that can be placed with the seed. Urea is the major nitrogen source where seedling damage might be expected so a significant amount of field and growth chamber work has been done on urea in the past five years. Read more


Year of initiation:1995
Year of completion:1995

Updates & Reports

1995

1995 Annual Report

2001

Justification

2001

Methodology

2001

Objectives


Project Leader

Les Henry, University of Saskatchewan


Project Cooperators

None


IPNI Staff

Adrian Johnston


Location

Americas \ Northern America \ CAN \ Saskatchewan


Topics

4r place, 4r rate, 4r source, 4r time, best management practices, nutrient management

barley, rapeseed (canola), wheat

Nitrogen (N), Phosphorus (P), Potassium (K), Sulfur (S)