Tag archive: nitrogen

Is it worth targeting a jump up in protein grade?

Some significant global premiums are emerging for high protein wheat grades. These international prices are starting to flow through to domestic wheat prices. Prime hard wheat (standard is a minimum 13% protein) was recently quoted at a premium of $85/tonne over APW wheat (10.5% protein, 5% screenings, 12.5% moisture) in […]

How to improve results from dual purpose crops

Responsive nitrogen (N) management optimises grain yield and grazing value from dual-purpose crops. Dual-purpose crops are sown early, grazed during winter, then grown on to produce grain. For dual purpose crops in the southern region the framework for N nutrition should be:

Apply adequate N upfront to promote vigorous forage […]

Webinar: How to check your pulse-N

Pulse crops can be a valuable source of nitrogen within cropping systems. The amount of N fixed by legumes can vary substantially and is affected by the species of crop, soil and seasonal conditions and crop management factors.
In this webinar, QDAF senior agronomist Howard Cox and researcher Professor David Herridge, […]

How to manage nutrients after waterlogging

Waterlogging affects nutrients in soils, and reduces the ability of plant roots to take up nutrients. Root functions require oxygen. Root growth and access to soil nutrients are restricted in waterlogged soils.
Soil test before planting the next crop to check nutrient status. Nitrogen (N), potassium (K), sulphur (S) and […]

How to adjust crop nutrition after a good year

High grain yields mean high rates of nutrient removal, in particular, nitrogen (N) and phosphorous (P). Soil fertility in the paddock declines unless nutrients are replaced. Soil and grain tests help you make better nutrient budget decisions.
Reference values for nutrient removal are just an indication (especially for P):

A 6-tonne […]

The latest on Nitrogen at the 2017 GRDC Updates

Managing N loss risks – Chris Dowling
Practical N management can minimise the economic impact of N loss events. Chris Dowling from Back Paddock Company presented at the Bellata Update.
Denitrification and managing nitrogen loss risk – key factors affecting loss.
Nitrogen application – Richard Daniel
The rate of nitrogen application drove yield and […]

When do retained stubbles increase the need for nitrogen?

Microbes use nitrogen (N) from the soil to decompose stubbles. When stubbles have a high carbon: nitrogen (C: N) ratio, soil mineral N is tied-up. Cereal stubbles have a high C: N ratio of around 80:1. Canola stubble C:N ratios are higher and legume stubbles are lower.
As stubbles break down […]

Use paddock test strips to get the most out of your fertiliser budget

Paddock nutrient test strips showed two nutrient deficiencies in Justin Wundke’s barley crop. Justin and family run a cropping and prime sheep enterprise in South Australia.
Before sowing last year’s crop Justin knew his paddock could have an issue with sulfur deficiency. Justin set up some test strips in his paddock after […]