Tag archive: nitrogen use effciency

How to manage nitrogen in no-till residues

Crop residues influence the supply and uptake of nitrogen (N). In the long term, residues will improve soil fertility. Stubbles can immobilise soil N as they break down. Moisture makes a big difference to the rate of stubble decomposition and mineralisation of nitrogen in the soil.
Nathan Craig was involved […]

The good, the bad and the ugly of topdressing opportunities

Topdressing decisions have to be made or revised, as the season progresses. The best nutrient use efficiency is achieved when nutrient supply matches crop demand. Splitting N applications through the season can better match crop demand than applying all N upfront, and allows some of the expense to be deferred […]

Three reasons why topdressing Nitrogen can fail

A crop’s nitrogen (N) requirement rises when rainfall increases the yield potential. Applying more N fertiliser to meet greater plant N demand is often appropriate, but crop uptake is not guaranteed. Understanding why can help tailor topdressing practices to increase the chances of the applied N boosting crop yield and […]