Tag Archives: nitrogen

Saving N for a rainy day: nitrogen management after a dry finish

By Sebastian Ie, BCG Take home messages Nitrogen applied to crops that have hayed off can contribute to crop biomass and yield in the subsequent season. When haying off is severe, a nitrogen (N) balance based on paddock history may … Continue reading

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Can we reduce nitrogen inputs for wheat sown onto high-input crop stubbles and still achieve high yields?

By Heather Cosgriff (SFS) Key messages: Soil nitrogen availability was very high prior to sowing, 321.6kg/ha available Incorporating poppy stubble led to high potentially mineralisable nitrogen levels There was no yield or protein response to additional urea applications Trojan generally … Continue reading

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Canola on incorporated stubble

By Damian Jones, ICC Work by Clive Kirkby, a CSIRO scientist, suggests that to improve our soil carbon levels, stubbles have to be incorporated and rapidly broken down by soil microbes rather than slowly decomposing on the soil surface. However if … Continue reading

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Nitrogen and sulphur timing in the Mallee

By Simon Craig (Agronomise, BCG consultant) Key messages: The application of nitrogen increased grain yield by 0.5t/ha, but there was no benefit from additional sulphur. At this site, money was better spent on nitrogen than on sulphur. Grain protein was very low (7-10% protein) which … Continue reading

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Liquid versus granular nitrogen in bread and durum wheat

By Tim McClelland (BCG) and Rob Norton (IPNI) Key messages: In this trial, contrary to expectation, the durum wheat achieved an average yield only 0.1t/ha lower than bread wheat (Scout). During 2014, there was a price differential of between -$83 and $277 for durum (DR1) over … Continue reading

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Vetch termination

By De-Anne Ferrier (BCG), Laura Goward and Mark Peoples (CSIRO) Key messages: When vetch is established in March and is terminated ‘early’ (three to four months later, in June, July), soil water will be conserved for the subsequent wheat crop; the risk of haying off due … Continue reading

Posted in Break crops in retained stubble systems, Research results | Tagged , , , , , , | 2 Comments

Contributions and constraints of stubble to nutrient supply in relation to stubble and soil analysis

Key messages: Trial was infected by high numbers of ARG and was sprayed out prior to harvest to prevent weed seed set in the farmers paddock There were no significant differences in dry matter production for any of the treatments … Continue reading

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The nitrogen contribution of faba beans demonstration

By Damian Jones, ICC A demonstration was started by ICC in 2013 to measure the N added to the soil by green manuring a crop of faba beans. A crop of barley was sown over the green manured area in … Continue reading

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