Tag archive: nitrogen

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 […]

Get the best nitrogen benefit from legume rotations

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 […]

Crop nutrition field day provides local solutions

Researchers, agronomists and leading grain growers came together in July and August for a series of successful on-farm workshops presented by the More Profit from Crop Nutrition II (MPCN II) project.

Findings from recent soil and plant nutrition research were outlined by crop nutrition and agronomy researchers, followed by in-depth […]

What can you do with waterlogged paddocks?

How do you make evidence-based decisions following excessive rain and slow soil water drainage? Where the crop is not a write-off, getting a handle on which areas of the paddock are in the best shape, and the yield potential for those areas is the most useful information to have.
Assessing crop […]