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low protein level

Catalogue: GRDC Media
Central Queensland wheat growers have seen low protein levels in this season's crop with the likely causes stemming from the long wet season of 2010-11... These include: low starting soil nitrogen as a consequence of low organic carbon (less mineralised nitrogen) and denitrification; applied bag nitrogen still being close to the surface and not located in moisture where the wheat plant roots could easily access it; crops growing poorly and unable to exploit all the available soil nitrogen; leaching; and soil erosion losses... Log in or register to leave a comment...
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Catalogue: Broadacre Field Crops DAFF QLD
" Print the page Plants deficient in nitrogen (N) are stunted with pale green or yellow lower leaves, often with reddish tints and produce grain with low protein levels... Older cropped soils have less ability to mineralise nitrogen due to depleted soil organic matter levels... Dry seasons have less fallow mineralisation of nitrogen, while good moisture and warm soils encourage more nitrogen to be mineralised high levels of surface stubble, particularly when combined with zero tillage, which initially increase the nitrogen demand of the crop as fallow mineralisation of nitrogen has not occurred waterlogging during the later part of the fallow or early cropping period, which causes leaching or demineralisation losses of soil nitrogen...
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Catalogue: Broadacre Field Crops DAFF QLD
" Print the page Plants deficient in nitrogen (N) are stunted with pale green or yellow lower leaves, often with reddish tints and produce grain with low protein levels... Older cropped soils have less ability to mineralise nitrogen due to depleted soil organic matter levels... Dry seasons have less fallow mineralisation of nitrogen, while good moisture and warm soils encourage more nitrogen to be mineralised high levels of surface stubble, particularly when combined with zero tillage, which initially increase the nitrogen demand of the crop as fallow mineralisation of nitrogen has not occurred waterlogging during the later part of the fallow or early cropping period, which causes leaching or demineralisation losses of soil nitrogen...
Related categories:
Catalogue: Broadacre Field Crops DAFF QLD
" Print the page Plants deficient in nitrogen (N) are stunted with pale green or yellow lower leaves, often with reddish tints and produce grain with low protein levels... Older cropped soils have less ability to mineralise nitrogen due to depleted soil organic matter levels... Dry seasons have less fallow mineralisation of nitrogen, while good moisture and warm soils encourage more nitrogen to be mineralised high levels of surface stubble, particularly when combined with zero tillage, which initially increase the nitrogen demand of the crop as fallow mineralisation of nitrogen has not occurred waterlogging during the later part of the fallow or early cropping period, which causes leaching or demineralisation losses of soil nitrogen...
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Catalogue: Ground Cover
Protein lost in long wet season - By Rachel Bowman.. Maurie Conway, from the Queensland Department of Employment, Economic Development and Innovation, says the following influences are likely to be contributing to the problem: low starting soil nitrogen due to low organic carbon (less mineralised nitrogen) and denitrification; wheat roots were unable to easily access applied nitrogen because it tended to remain close to the soil surface; soil erosion; and leaching... Mr Conway says nitrogen was mostly depleted by crops, soil erosion and denitrification, whereas losses resulting from leaching were generally low...
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