Potassium Sources for Soybeans

IPNI-1998-CAN-ON18

Little Ontario research has been done on soybean potassium (K) needs. The relative chloride (Cl) sensitivity of Ontario cultivars has not been tested. Read more


Year of initiation:1998
Year of completion:2001
Map:

Interpretive Summary

Potassium Sources for Soybeans, 2002 This project was conducted to determine whether chloride or magnesium applied with potassium (K) fertilizers influence soybean yield and quality, and to determine whether Ontario soybean cultivars differ in response to sources of K. The experiment was conducted over four years beginning in 1999. In 2000 and 2002, soybeans were planted following soybeans, with treatments applied to the same plots as the previous year.

Potassium Sources for Soybeans, 2001 The objectives of this project are: 1) to determine whether chloride (Cl–) or magnesium (Mg) applied with potassium (K) fertilizers influences soybean yield and quality and 2) to determine whether Ontario soybean cultivars differ in response to sources of K. The project is being carried out with financial support from the Ontario Agri Business Association. For the first two years, the experiment was conducted on the same plots each time.

Potassium Sources for Soybeans, 2000 Little Ontario research has been done on soybean K needs. The relative chloride (Cl) sensitivity of Ontario cultivars has not been tested. The objectives of this project were to determine whether Cl or magnesium (Mg) applied with K fertilizers influences soybean response to K and to determine whether Ontario soybean varieties differ in response to K and sources of K. In 2000, the experiment was conducted on the same plots as the previous year.

Potassium Sources for Soybeans, 1999 Little Ontario research has been done on soybean K needs. The relative chloride (Cl) sensitivity of Ontario cultivars has not been tested. The objectives of this project were to determine whether Cl or Mg applied with K fertilizers influence soybean response to K and to determine whether Ontario soybean varieties differ in response to K and sources of K. As in 1998, differences among K sources were small and subtle on the five soybean varieties evaluated.

Potassium Sources for Soybeans, 1998 Little Ontario research has been done on soybean potassium (K) needs. The relative chloride (Cl) sensitivity of Ontario cultivars has not been tested. The objectives of this project were to determine whether Cl or magnesium applied with K fertilizers influence soybean response to K, and to determine whether Ontario soybean varieties differ in response to K and sources of K.

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Updates & Reports

1998

1998 Annual Report

2004

Published reports related to the research

2001

Project Description

2001

Objectives

2001

Investigators


Project Leader

T.Q. Zhang, Agriculture and Agri-Food Canada


Project Cooperators

Tom Welacky


IPNI Staff

T. Bruulsema


Location

Americas \ Northern America \ CAN \ Ontario


Topics

4r source, soil fertility and productivity

soybean

Potassium (K)