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Tag archive: yield

Will mid-season N be worth it?

published - 8 August 2019
by Crop Nutrition

As the winter cropping season progresses, some fortunate growers may be considering in-crop nitrogen (N) applications. At the 2016 GRDC research updates, CSIRO researcher and mixed farmer John Angus discussed when and how to review N nutrition during the season. Once a cereal crop has emerged, the key times to […]

Do I need to worry about the ratio of calcium to magnesium in the soil?

published - 7 December 2016
by Rob Norton, ANZ IPNI, Nigel Wilhelm, SARDI

There is a story going around that the ratios of available cations in soils affects crops and pastures. The idea of a ‘balanced’ soil gained favour in the USA from work in the 1940s. The ‘ideal soil’ had approximately 65% Ca, 10% Mg, and 5% K as exchangeable cations. This […]

Do late sown crops need extra Phosphorus?

published - 1 June 2016
by

As winter sowing dates get later a crop’s potential response to Phosphorus (P) fertiliser rises, at the same time absolute yield potential is falling. This raises the question of what adjustments might need to be made to P fertiliser rates. Plant physiology indicates that later sown crops should be more […]