Crop Nutrition

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Tag archive: fertiliser

WATCH: Is it time to re-think P critical levels in WA?

Applying phosphorus (P) to soils with seemingly adequate P stocks can boost yield. Trials in WA are showing crop response to P above critical levels. Critical levels indicate if a crop will respond to more of a certain nutrient. Above the critical level, there’s less than a 10% chance of […]

Keep K in soils to alleviate stress

At a recent GRDC Regional Cropping Solutions Network open forum at Morawa in Western Australia, Dr Richard Bell from Murdoch University spoke of the importance of potassium (K) for optimal plant growth and alleviating crop stress. Low soil K is common in the sand and duplex soils of WA cropping […]

Insights from N rich and poor strips

Tom Batters and his colleagues from AGRIvision Consultants, Swan Hill, Victoria have been using nitrogen-rich test strips (N-rich strips) informally for many years.  Last season they took a more formal approach and followed the test strip progress with photos and NDVI images. The strips are a real time, low-cost visual […]

Get better precision with grain tests

Grain nutrient testing is a quick and easy way to see what nutrients are leaving the farm with the grain. Incitec Pivot trials at the Darling Downs, western Downs and in northern New South Wales have looked at sorghum grain test results from the last three years of summer crops. […]

2018 in review- Crop nutrition implications for 2019

In November 2018, plant nutrition consultant Rob Norton presented growers and advisors with yet another insightful review of the 2018 cropping season, and how it may impact crop nutrition in 2019. Rob’s webinar focussed on the more strategic nutrient management decisions. These are longer-term objectives (3-5 years), planned at the […]

What is the phosphorus buffering index?

The Phosphorus Buffering Index (PBI) approximates a soil’s ability to ‘fix’ phosphorus (P). Soils with a high PBI quickly and tightly bind fertiliser P making it unavailable to plants. Low PBI soils can’t lock-up much P, leaving most applied P for plant uptake. Use PBI to improve interpretation of critical […]

BFDC III webinar – a chance to have your say on its future

Inspecting biomass produced in a biserrula pasture phase

Please register for a webinar on the Better Fertiliser Decisions for Cropping database and have your say on its future. – Nov 15, 2018 2:00 PM AEDT The Better Fertiliser Decisions in Cropping (BFDC) database and data interrogator has been developed over the last 7 years with training and support […]

How to adjust phosphorus after a dry year

A poor or failed crop last season will affect nutrient budgets this season. Cereal hay removes about 1–2 kg of phosphorus (P) per tonne of dry matter. Canola removes about 3 kg of P per tonne (see Table 1). Table 1. Comparison of nutrients removed in grain, straw, canola hay, […]

Chicken manure improves sandy soils

Chicken manure is helping to ameliorate sandy soils on South Australia’s Yorke Peninsula. Trial results over three years indicate that high-rate surface applications combined with deep ripping are delivering the highest marginal returns. Positive results The marginal returns from applying chicken litter (or a comparable, inorganic fertiliser), and deep ripping, […]

How are nutrients redistributed after windrowing?

Concentrating stubble into windrowed strips affects subsequent crop production, soil testing and fertiliser decisions. Wayne Pluske (Equii), Ryan Walker ( Apal Laboratories) and John Young (Wyening Mission Farm) looked at nutrient redistribution post-harvest. They measured plant material (dry matter as t/ha) and nutrient content of canola and wheat crops. The […]

Help shape the future of BFDC lll

A review of the Better Fertiliser Decisions for Cropping Systems in Australia database is set to commence with a series of industry consultative meetings over the next three months. The BFDC database contains yield response curves for many crops, nutrient applications and soil types across grain growing regions and has been […]

Will late N applications be worthwhile?

Growers in some lucky regions are now considering late, in-crop applications of nitrogen. Crops in Western Australia, south-west Victoria, and parts of Tasmania still have above average yield potential. Given current grain prices, the economic reward from late N application to these crops is likely to be high. But late […]