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Water infiltration

Catalogue: Ground Cover
To reduce losses avoid unnecessarily high nitrogen rates.. Dr Schwenke says nitrate denitrification losses can be large, but require a combination of low soil oxygen (an extreme example is when soils are waterlogged for an extended period), high soil nitrate concentration (soon after soils have been fertilised) and readily available (labile) carbon to support an active microbial community... According to Professor Bell, the results showed that between 0 and 44 per cent of the applied nitrogen was not able to be recovered in the soil or plant at harvest, with in-season rainfall, both timing and amount, and soil carbon and nitrogen status having a major impact on these seasonal losses...
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Catalogue: GRDC Publications
Testing of clays is recommended... Dave warns that stock health must be monitored and treated on newly ploughed crops... Peter chose the highest rate of subsoil material of between 200 to 300t/ha of clay rich subsoil to apply to his damaged back paddocks...
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Catalogue: GRDC Updates
Soil mixing such as rotary spading often proves an excellent clay incorporation method and offers opportunities for simultaneous incorporation of soil improvers such as lime or gypsum... The paired row seeding boots gave the highest yield response over knife points with nearly a 1t yield increase on the pale deep sand and a 650 kg/ha yield increase on the sandy gravel... Using rounded or 'V'-shaped press-wheels can minimise the risk of furrow collapse and infill and also prevent the furrow side walls being ripped up, which can occur with more rectangular shaped press-wheels creating a tumbling mass of soil behind the press wheel and poor product placement...
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Catalogue: GRDC Media
Seeding rates theory holds water for repellent soils.. Topsoil water repellence was measured at all sites using the Molarity of Ethanol Droplet (MED) test... "At Yealering, the use of soil wetters increased the plant numbers over the control by at least 18 per cent at the 60kg/ha seed rate and 22 per cent at the 120klg/ha seed rate," he said...
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Catalogue: GRDC Media
Seeding rates theory holds water for repellent soils.. Topsoil water repellence was measured at all sites using the Molarity of Ethanol Droplet (MED) test... "At Yealering, the use of soil wetters increased the plant numbers over the control by at least 18 per cent at the 60kg/ha seed rate and 22 per cent at the 120klg/ha seed rate," he said...
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Catalogue: Broadacre Field Crops DAFF QLD
Adult false wireworms emerge from the soil during spring and early summer... Larvae cause most damage to germinating crops during spring while adults are most troublesome in summer... Cultural control: the false wireworm is mainly a pest in areas having heavy, black soils...
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Catalogue: GRDC Updates
Maximising the nitrogen (N) benefits of rhizobial inoculation.. Inoculation of legumes with rhizobia can deliver substantial N inputs to southern farming systems even when the impact on legume yield is small... Inoculation of legumes with rhizobia is a standard practice...
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Catalogue: Broadacre Field Crops DAFF QLD
Adult false wireworms emerge from the soil during spring and early summer... Larvae cause most damage to germinating crops during spring while adults are most troublesome in summer... Cultural control: the false wireworm is mainly a pest in areas having heavy, black soils...
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Catalogue: Broadacre Field Crops DAFF QLD
Adult false wireworms emerge from the soil during spring and early summer... Larvae cause most damage to germinating crops during spring while adults are most troublesome in summer... Cultural control: the false wireworm is mainly a pest in areas having heavy, black soils...
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Catalogue: Broadacre Field Crops DAFF QLD
Black field earwig, showing three sizes.. Black field earwig, showing three sizes nymph and adults chew on germinating seed and young seedlings... Use germinating seed baits or digging and sieving to detect adults and nymphs prior to planting...
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