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Strategies to improve efficiency of use of applied N, P and K fertiliser in Central Queensland

Bell, M. J., Lester, D. W. and Sands, D. J. (2020) Strategies to improve efficiency of use of applied N, P and K fertiliser in Central Queensland. GRDC Update . pp. 1-12.

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Abstract

Take home messages
• Available moisture has been the main limit to productivity in recent seasons but using that water efficiently to produce harvestable yield is impossible without adequate nutrients
• The background nutrient status of soils in Central Qld is variable, but there is an increasing reliance on fertilisers to meet the demands of both cereal grains and pulses
• With more $/ha invested in fertilisers, comes a need for efficient use of that fertiliser to ensure there is a return on that investment
• A common cause of low efficiency of fertiliser recovery in cereal and legume crops is that nutrients and water are increasingly located in different parts of the soil profile
• There needs to be greater consideration of fertiliser placement, product and timing to improve fertiliser nutrient recovery, and strategies need to be based on a solid understanding of the interactions between crop root systems, soil characteristics and nutrient dynamics against a background of variable seasonal moisture availability.

Item Type:Article
Business groups:Crop and Food Science
Keywords:fertilisers, placement, blends, recovery efficiency, application strategies
Subjects:Agriculture > Agriculture (General) > Agriculture and the environment
Agriculture > Agriculture (General) > Agricultural meteorology. Crops and climate
Agriculture > Agriculture (General) > Methods and systems of culture. Cropping systems
Agriculture > Agriculture (General) > Improvement, reclamation, fertilisation, irrigation etc., of lands (Melioration)
Plant culture > Field crops
Plant culture > Field crops > Sorghum
Deposited On:11 Jan 2021 04:00
Last Modified:11 Jan 2021 04:00

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