Effect of rate and timing of K on three crops

A glasshouse experiment comparing the rate and time of K application on wheat, canola and lupins.

IPNI-2010-AUS-07

This is a glasshouse experiment aimed to assess the opportunity to split K application on the growth and critical K levels for wheat, canola and lupins. Read more


Year of initiation:2010
Year of completion:2013
Map:

Articles

01 Apr 2014

The effect of K applied at different times to wheat, Western Australia
Responses on a sandy soil in pot and field experiments


Interpretive Summary

2011

In a glasshouse experiment, wheat, lupin, and canola were grown on a yellow sandy earth from a field site where the K had never been applied. The Colwell soil extractable K was 26 mg/kg, a soil test level expected to be deficient for the growth and yields of these three crops. Several levels of K, as sulphate of potash, were applied to give a range of K additions from deficient to an adequate supply of K for dry weight of shoots and grain.

2010

In a glasshouse experiment, wheat (Triticum aestivum L. ), lupin (Lupinus angustifolius L. ), and canola (Brassica napus L. ) were grown on a yellow sandy earth from the field site where K had never been applied. The Colwell soil extractable K was 26 mg/kg, a soil test level expected to be deficient for the growth and yields of wheat, lupin, and canola.


Updates & Reports

2012

2012 Annual Report

2011

Project Description



Project Leader

Ross Brennan, Western Australian Department of Agriculture and Food


Project Cooperators

None


IPNI Staff

R. M. Norton


Location

Oceania \ Australia and New Zealand \ AUS \ Western Australia \ Perth


Topics

4r rate, 4r time, nutrient management

lupin, rapeseed (canola), wheat

Potassium (K)