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water repellent

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Catalogue: Ground Cover
It is estimated that three million hectares of water-repellent, sandy-textured soils in Western Australia and South Australia could benefit from clay application.. Clay spreading in WA is economical if the clay source is within half a kilometre of the area where it is to be applied.. Mr Hall says claying achieves yield increases by overcoming constraints that include: uneven distribution of soil moisture leading to poor or staggered emergence of crops and weeds; low nutrient-holding capacity; potassium deficiencies; and wind erosion...
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Catalogue: Ground Cover
Mr Hall says claying achieves yield increases by overcoming constraints that include: uneven distribution of soil moisture leading to poor or staggered emergence of crops and weeds; low nutrient-holding capacity; potassium deficiencies; and wind erosion... Mr Hall says that through the MPCN project, initial sampling of 43 WA paddocks treated with clay showed some had a high phosphorus retention index (PRI), which makes phosphorus less available to crops in the short term... Mr Hall says researchers will also revisit long-term clay trial sites and study the paddocks of growers who have been using clay for long periods to assess how crop nutrition management has changed post-treatment...
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Catalogue: Ground Cover
Mitigation (annual management) of non-wetting soils by no-till furrow sowing can often be improved by: adding wings to points or boots sowing close to the previous row using banded wetter, especially with knife points using better wetter formulations on dry soil.. The researchers say this would provide greater annual whole-farm profit, assuming the whole farm is moderately water repellent and dry sowing is commonly used... "For growers on moderately repellent yellow sand at East Binnu, a lot of money could be spent on claying or blanket application of a wetting agent; the trial showed this would likely result in wasted money, unless the more effective methods of claying with deeper incorporation were used," he says...
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Catalogue: Ground Cover
Trials test sowing options to lift income.. The researchers say this would provide greater annual whole-farm profit, assuming the whole farm is moderately water repellent and dry sowing is commonly used... "For growers on moderately repellent yellow sand at East Binnu, a lot of money could be spent on claying or blanket application of a wetting agent; the trial showed this would likely result in wasted money, unless the more effective methods of claying with deeper incorporation were used," he says...
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