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sodic soil

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Catalogue: GRDC Final Reports
Transient salinity in soils, characterised by high concentration of salts in the subsoil, varies with depth and changes throughout the season in response to rainfall, surface evaporation, water use by vegetation and the leaching fraction (hydraulic conductivity) of the clay layer... Experiments in our project have shown that transient salinity (accumulation of salt in root zone layers, not influenced by watertable) affects crop yield and growth in dry land regions mainly by reducing water use efficiency of crops through osmotic effect, although toxic effects of individual ions such as sodium can also cause yield reduction... The results indicate that gypsum application improves leaching of salts...
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Catalogue: Broadacre Field Crops DAFF QLD
Application of fertilisers to meet crop demand is only a part of developing a crop nutrition plan... Most of the nutrients taken up by cotton from the soil are derived from the decomposition of previous crop residues, soil microorganisms and soil organic matter... Salinity is measured by testing the soil solutions electrical conductivity (CEC)...
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Catalogue: Broadacre Field Crops DAFF QLD
Application of fertilisers to meet crop demand is only a part of developing a crop nutrition plan... Most of the nutrients taken up by cotton from the soil are derived from the decomposition of previous crop residues, soil microorganisms and soil organic matter... Salinity is measured by testing the soil solutions electrical conductivity (CEC)...
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Catalogue: Broadacre Field Crops DAFF QLD
Application of fertilisers to meet crop demand is only a part of developing a crop nutrition plan... Most of the nutrients taken up by cotton from the soil are derived from the decomposition of previous crop residues, soil microorganisms and soil organic matter... Salinity is measured by testing the soil solutions electrical conductivity (CEC)...
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Catalogue: GRDC Research Summaries
Salinity affects plant growth through impacts on plant water relations... We expect that the yields of cultivars in the water-limited environment will be highly correlated with the yields on the saltland site at Ballidu, but the yields in the non water-limited environment will not be correlated with the yields in either the water-limited or the saltland environment... Drought is impacting on the productivity of cereals in the drier parts of the wheatbelt and farmers need access to the best cereal cultivars for particular soils, timely "soil type specific" advice on how to respond to dry seasons, and advice about whether certain kinds of soils of low productivity should be withdrawn altogether from cereal production...
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Catalogue: GRDC Research Summaries
Salinity affects plant growth through impacts on plant water relations... We expect that the yields of cultivars in the water-limited environment will be highly correlated with the yields on the saltland site at Ballidu, but the yields in the non water-limited environment will not be correlated with the yields in either the water-limited or the saltland environment... Drought is impacting on the productivity of cereals in the drier parts of the wheatbelt and farmers need access to the best cereal cultivars for particular soils, timely "soil type specific" advice on how to respond to dry seasons, and advice about whether certain kinds of soils of low productivity should be withdrawn altogether from cereal production...
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Catalogue: GRDC Media
A joint Grains Research and Development Corporation (GRDC) and Victoria Department of Primary Industries (DPI) study in southwest Victoria found that growers could potentially reduce fertiliser application rates by up to 30 per cent through better fertiliser management on raised beds, and quantified the amount of runoff likely from significant rain events... While the drought meant some farmers reverted to traditional flat cropping, DPI researcher Tim Johnston says he expects raised bed systems to experience resurgence at the end of the winter cropping season, when farmers have time to consider their management, drainage and machinery options... "Application rates for topdressed nitrogen fertiliser can be reduced by up to 30pc by placing it on top of raised beds and not in the furrows, and this has environmental as well as economic benefits by potentially reducing nutrient losses in runoff," Mr Johnston said...
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Catalogue: GRDC YouTube channel
The incorporation of chicken manure into heavy clay subsoil in the southern grain region's high rainfall zone has help increase plant available water and increase crop yields... In terms of water, 248.41: the water was measured through neutron moisture metres and we found during Summer fallow period 257.799: the soil was able to store more water almost three times the amount of water that the control 263.18: treatments were able to hold and that amount of water was available to the crops during 269.349: grain fill... 340.999: Renick Peries: We tend to recommend to people that they do 344.689: it in February - March but sometimes if you have a dry season you can extend that to say 350.83: April 351.339: Narrator: Yaloake Estate is so convinced by their own 354.139: results they 360.089: 20 tonnes of chicken manure per hectare at 40 cm depth to make sure its in the clay layer...
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Catalogue: GRDC Updates (North)
2 PAULBRENNAN- CONSULTANT THE SCIENCE OF BIOTECHNOLOGY - WHAT PROMISE FOR AGRICULTURE................................. Soil salinity is measured by the electrical conductivity (EC) and/or chloride content... Grains Research Update for Growers Clermont August 1, Emerald August 2, 2000 its effects on yield for various grain crops is shown in Figure 2. differing tolerance to salinity...
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Catalogue: GRDC Updates (South)
2 PAULBRENNAN- CONSULTANT THE SCIENCE OF BIOTECHNOLOGY - WHAT PROMISE FOR AGRICULTURE................................. Soil salinity is measured by the electrical conductivity (EC) and/or chloride content... Grains Research Update for Growers Clermont August 1, Emerald August 2, 2000 its effects on yield for various grain crops is shown in Figure 2. differing tolerance to salinity...
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