Fertility Management of Winter Wheat Grown after Alfalfa

Forage hay crops remove large amounts of nutrients from the soil, because of this, levels of available phosphorous, potassium and sulfur are often marginal for crops following forages.

IPNI-1997-CAN-MB10

Forage hay crops remove large amounts of nutrients from the soil; about two to three times as much as annual seed crops. Because of this, levels of available phosphorous, potassium and sulfur are often marginal for crops following forages. While levels of available soil nitrogen are elevated when forage legumes are included in the rotation, some additional N fertilizer to following crops is warranted to maximize yield potential. Read more


Year of initiation:1997
Year of completion:1999
Map:

Interpretive Summary

1998

Fertility Management of Winter Wheat Grown after Alfalfa, 1998 Winter wheat is often planted into no-till alfalfa stubble. Its ability to effectively capture over-winter moisture helps offset the negative impact alfalfa can have on soil moisture. Alfalfa depletes the soil of moisture and plant nutrients, particularly P and K. However, many believe it contributes substantial N to subsequent crops. This project is investigating the N requirements of winter wheat following alfalfa.

1997

Fertility Management of Winter Wheat Grown after Alfalfa, 1997 Alfalfa breaking is often deficient in N, P and K because of the high nutrient demand of alfalfa. This project is investigating the fertility requirements of winter wheat seeded on alfalfa breaking. Initial results show that a combination of alfalfa in rotation with N fertilizer provides higher protein that either alfalfa or N alone.


Updates & Reports

1998

1998 Annual Report

2001

Project Description

2001

Justification

2001

Objectives

2001

Investigators

2001

Methodology


Project Leader

Martin Entz, University of Manitoba


Project Cooperators

Stewart Brandt


IPNI Staff

Adrian Johnston


Location

Americas \ Northern America \ CAN \ Manitoba


Topics

4r rate, 4r time, nutrient management

alfalfa, wheat

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