The Influence of Fertilizer Placement on Crop and Weed Ecology in Direct-seeding Systems

Assess the impact of fertilizer placement on weeds in no-till seeding systems.

IPNI-1996-CAN-MB9

The project will provide a knowledge base for efficient fuel, fertilizer, and herbicide usage thereby optimizing net-returns at a cropping-systems level for the Black Soil Zone. The data generated from this research will be the largest data base dealing in an integrated manner with the impact of fertilizer placement on weeds in direct-seeding systems and will be of interest to producers and the agro-industry. The principles elucidated will have regional and national application. Read more


Year of initiation:1996
Year of completion:2000
Map:

Interpretive Summary

The Influence of Fertilizer Placement on Crop and Weed Ecology in Direct-Seeding Systems, 2000 The rapid expansion of no-till seeding in western Canada has increased demand for information on how the time of fertilizer application and placement methods influence crop yield response. In addition, the amount of soil disturbance associated with fertilizer application and seeding can have a profound effect on the stimulation of weed growth and resulting crop competition.

The Influence of Fertilizer Placement on Crop and Weed Ecology in Direct-Seeding Systems, 1999 The rapid expansion of no-till seeding in western Canada has increased demand for information on how time of fertilizer application and placement methods influence the yield response of both wheat and canola. In addition, the amount of soil disturbance associated with fertilizer application and seeding can have a profound effect on the stimulation of weed growth and resulting crop competition.

The Influence of Fertilizer Placement on Crop and Weed Ecology in Direct-Seeding Systems, 1998 Time of fertilizer application and type of placement can increase the crop’s ability to compete with weeds. A prairie-wide study is comparing spring and fall fertilizer application and herbicide rates in wheat and canola. Results show that herbicide rates can be reduced when used with N fertilization without reducing crop yields.

The Influence of Fertilizer Placement on Crop and Weed Ecology in Direct-Seeding Systems, 1997 This is the 2nd year of a study evaluating the impact of N timing and placement on weeds in canola and wheat. Fall and spring fertilizer placements at different row spacing and herbicide rates are being compared at sites in Manitoba, Saskatchewan and Alberta. Results are showing little difference in yield when herbicide rates are reduced by a third of the recommended rate.

The Influence of Fertilizer Placement on Crop and Weed Ecology in Direct-Seeding Systems, 1996 Weed control is often a major challenge and expense in zero-till and reduced tillage cropping systems. Crop competition is one of the tools a farmer has in his arsenal for fighting weeds. This new project is studying how fertilizer placement effects weed management in direct-seeded crops across the Canadian prairies.

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Updates & Reports

2000

2000 Annual Report

2001

2000

2001

Project Description

2001

Justification

2001

Investigators

2001

Methodology

2001

Objectives


Project Leader

Doug Derksen, Agriculture and Agri-Food Canada


Project Cooperators

George Clayton
Randy Kutcher
Guy Lafond
Cynthia Grant


IPNI Staff

Adrian Johnston


Location

Americas \ Northern America \ CAN \ Manitoba


Topics

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

barley, rapeseed (canola), wheat

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