Category: Strategic Planning
eXtensionAUS Crop Nutrition published 49 articles in 2016. These were the most popular:
Can I burn lime and gypsum with stubble?
Bottom line: Loss of limestone will be minimal, gypsum might lose some solubility.
2. Three reasons why topdressing nitrogen can fail
Not enough rain after topdressing, too wet, too late!
3. The best frost tactics for […]
Soil compaction caught the eye of growers and advisors at recent field days. Soil pits were part of every More Profit from Crop Nutrition roadshow field day. Soil scientists explained what they could see in the soil profiles.
Crop nutrition relies on roots exploring the soil to access nutrients. Ideally, soil […]
Soil pH and phosphorus (P) fertiliser can interact to make soil phosphorus more available. This can happen when:
there are no other major nutrient deficiencies.
recent lime application has produced a large change in soil pH (>0.5 pH units).
The soil pH and P interaction is driven by changes to root growth in […]
Having sufficient potassium reduces crop damage in frost events. Field trials in Western Australia showed benefits from potassium in wheat and canola. Richard Bell is a researcher at Murdoch University. In this video he explains:
Crops respond more to potassium fertiliser in seasons that stress the plants with drought or frost […]
There is a story going around that the ratios of available cations in soils affects crops and pastures. The idea of a ‘balanced’ soil gained favour in the USA from work in the 1940s. The ‘ideal soil’ had approximately 65% Ca, 10% Mg, and 5% K as exchangeable cations. This […]
You might know how much you spent on fertiliser last season, but do you know if it was a good investment? Review at the end of the season can answer that question. Do you know how to assess how well last season’s crop nutrition management shaped up?
Join us for a […]
When both phosphorus (P) and potassium (K) are both low in the subsoil there’s a strategic advantage to managing these two nutrients together. Deep phosphorus (P) deficiency is more common than deep potassium (K) deficiency. It’s unusual to see low subsoil K not accompanied by low subsoil P.
Without adequate […]
Peter Lott is an independent cropping advisor who attended the More Profit from Crop Nutrition (MPCN) roadshow at Cootamundra in August 2016. At the end of the day he shared his thoughts on some of the topics covered at the field day, and how he approaches these in his work.
Legumes grown under ideal conditions can add 30 to 120 kilograms of nitrogen per hectare, per year, back into the soil for use by other crops. The benefit of legume rotations to the following crops comes when the nitrogen-rich legume residue has decomposed and released nitrogen into the soil. Wheat […]