Crop Nutrition

Test what when to help crop nutrition decisions?

Lab tests help advisors with fertiliser and soil amendment planning. Without lab tests, crop nutrition can be a ‘best guess’. Returns from fertiliser inputs might not be optimal. Yields could suffer. Soil, plant tissue, and grain testing can guide crop nutrition throughout the season. Soil tests indicate crop available nutrient […]

Soil testing 2018

Soil testing informs crop nutrition decisions. Collecting representative samples is the most important step in getting useful information. Plan your soil sampling Map non-uniform paddocks into zones. Base the zones on observed soil differences (or EM38 maps if available), and sample them separately. Use a sampling plan within zones. Grids, […]

Top up nutrients after a good year

Nutrients leave the paddock with the grain. A good yield means more nutrients go out and less remain in the soil. Some nutrients may need topping up to maintain yields. How much topping up? Different grains contain varying amounts of nutrients. The table below gives estimates of the nutrients removed […]

Is nitrogen placement different north vs south?

Trials looking at placing nitrogen fertiliser into the soil have shown some different outcomes. In the southern region adding mid-row banding (MRB) to the crop nutrition toolkit looks interesting. A trial showed modest yield gains and better fertiliser uptake. In the northern region, rate looks more important than how nitrogen […]

Tillage increases P accessibility

Tillage can redistribute phosphorus (P) within the top 10 cm of the soil. P often becomes concentrated at the soil surface, especially in no-till paddocks. Getting P deeper into the soil is important in dry seasons when the active root zones are deeper. Trials tested the response of wheat to […]

Top five in 2017

Take a look at our five most popular articles and videos from 2017.   This year we published 60 articles on www.extensionAUS/Crop Nutrition These articles covered many different aspects of crop nutrition in the Australian grains industry. These articles were prepared with and reviewed by, members of our Community of […]

The best resource on fertiliser N and legumes in the northern region

Balancing legume N with fertiliser inputs can be tricky. Legumes can affect soil N dynamics in unexpected ways. For example, chickpeas grown in low N soil can fix a large amount of N. But in high N soils, chickpeas use the soil N and fix less from the atmosphere. They […]

Chickpeas grow better roots with deep phosphorus

Good P supply through the root zone can improve crop growth. Placing some P fertiliser deeper into cropping soils can help supply the needs of maturing crops. Where subsoils are low in P, deep placing P can deliver yield gains. Looking closer at the roots Researchers in northern NSW and […]

What to do about fertiliser after a tough year

After a year with failed crops due to drought, it’s not ‘business as usual’ for the next season’s inputs. Some fertiliser nutrients can remain in the soil if they weren’t taken up by the crop. Demand for other nutrients can increase after drought. Key nutrients after a tough year Nitrogen […]

How to account for stubble nutrients next season

Stubbles can be a source of nutrients for next season. Different crops grown under different conditions have varying amounts of nutrients in their stubbles. Nutrient budgets can consider the amount and type of stubble. How much stubble? Stubble loads can be estimated from grain yield and the amount of growth. […]