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increased soil water

Catalogue: GRDC Updates
Nitrogen fixation activity of legumes is strongly linked to productivity and suppressed by soil nitrate... Data from the NSW Department of Primary Industries (DPI) long-term rotation experiments in northern NSW showed a positive effect of no-tillage on productivity and N2 fixation of both chickpea and fababean (Felton et al. 1998; Marcellos et al. 1998; Herridge et al. 1998)... Nitrate levels for Year 2 are after a 6-month summer fallow and for Year 3 are after an 18-month summer-winter-summer fallow (source: unpublished data of W. Felton, H. Marcellos, D. Herridge, G. Schwenke and M. Peoples)..
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Catalogue: GRDC Media
Research quantifies benefits of summer rainfall.. While crop residue on the surface of paddocks plays an important role in preventing wind and water erosion, it has little impact on the amount of water stored in the soil from summer rain... "Even if a grower received 25mm of rain on April 15, there would only be 7 or 8mm of moisture left in the soil by the start of May, which is obviously beneficial and provides an opportunity for seeding, but is less than growers might have thought," he said...
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Catalogue: GRDC Media
Research quantifies benefits of summer rainfall.. "Even if a grower received 25mm of rain on April 15, there would only be 7 or 8mm of moisture left in the soil by the start of May, which is obviously beneficial and provides an opportunity for seeding, but is less than growers might have thought," he said... But Dr Ward said that if more than 25mm of summer rainfall was received at one time, moisture would be retained for extended periods in the subsoil, especially on sandier textured soils which tended to lose less water to evaporation...
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