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Tag archive: drought

Podcast outlines the importance of K

In a recent GRDC Communities Crop Nutrition podcast, Dr Richard Bell from Murdoch University explained the importance of potassium (K) for optimal plant growth and reducing the effects of stressors such as drought, frost and salinity. K is second only to nitrogen in importance for crop growth. Many soils in […]

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, […]

Nutrient implications for failed crops

Many growers and advisers in eastern Australia are weighing up the options for their drought-stressed and frost-damaged crops.  Is it more economical to conserve crops as hay or silage, graze them or hope to eventually harvest them? Has the generally high cost of hay cutting been fully taken into account? […]

Six articles to help manage crop nutrition in the dry

The dry weather will impact crop plans for this season and next. Here’s a few resources to help make crop nutrition decisions. Managing a crop: In tough conditions, crops do better with potassium What to do with a failed crop What nutrients are lost when making hay from failed crops? […]

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 […]

In tough conditions crops do better with potassium

Having sufficient potassium reduces crop damage in frost events. Field trials in Western Australia showed benefits from potassium in wheat and canola. Richard Bell is a researcher at Murdoch University. In this video he explains: Crops respond more to potassium fertiliser in seasons that stress the plants with drought or […]

Tips to tweak your crop nutrition program following drought

Following drought growers look to recover production and protect vulnerable soils. When it comes, the break may present opportunities to cut back on some usual nutrient inputs while moving back into production. Soils should be managed with an eye to their long term fertility. Phosphorus Soil phosphate levels may increase […]

What’s the minimum Phosphorus rate if you are following a poor crop?

Many growers will be thinking about what to do with Phosphorus (P) fertiliser for their next winter crop. Soil tests are the best indicator of whether a paddock is going to be responsive to P fertiliser. If your soil tests shows moderate to good levels of P, and yields were […]

Potassium and crop stress

Crops may need extra Potassium when they under stress from drought or frost. There is a theoretical basis, and now GRDC funded research is looking into whether applying additional potassium is worthwhile when plants are under stress. Getting the right combination of drought and frost conditions to get meaningful results […]

What nutrients are lost when making hay from failed crops?

Cutting for hay is an option to get some economic value from a failed crop. Growers with an eye to the long term productivity of their paddocks weigh the value of the hay against the value of leaving the crop material in the paddock. Nutrients that would otherwise be recycled […]