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liming

Catalogue: GRDC Updates
The practice has corrected surface acidity but values of subsurface (typically 10-20 cm) pHCa< 4.5 are now common, leading to development of an acid throttle, sandwiched between the limed surface and the naturally neutral or alkaline subsoil... On the basis of three experiments in 2007, where we injected lime into acid (pHCa 4.0 - 4.3) subsurface layers, apparently not much... The uniformity of the effect of lime injection was measured at Milvale and found to be uneven across the rip-lines, with an increase of pHCa from 4.3 to >6 in the rip lines, but little change between the rips...
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Catalogue: GRDC Media
Soil testing with rake and boot.. Research is updating 'critical soil test values' which is improving interpretation of soil test results and helping Western Australian grain growers make better fertiliser decisions... Findings from crop nutrition research and guidelines to help growers conduct soil testing and apply fertiliser effectively are outlined in a Soil Testing for Crop Nutrition Fact Sheet and More Profit from Crop Nutrition Ground Cover Supplement...
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Catalogue: GRDC Updates
Herbicide resistance - Beating the challenge in Western Australia.. Contact details Rod Messina rodmess@springparkfarms.com.au < Keep browsing 0 Responses to Herbicide resistance - Beating the challenge in Western Australia.. Log in or register to leave a comment...
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Catalogue: GRDC Media
Partnership to deliver key new grains research in WA.. GRDC chairman Keith Perrett joined the WA Agriculture and Food Minister Ken Baston at the Dowerin GWN Machinery Field Days today to make the announcement... From left, DAFWA project manager for grain crop agronomy Ben Curtis, left, DAFWA acting executive director for grains industry Mark Sweetingham, GRDC western regional panel chairman Peter Roberts, WA Agriculture and Food Minister Ken Baston, GRDC chairman Keith Perrett, GRDC chairman-elect Richard Clark, GRDC board member Kim Halberd and GRDC managing director John Harvey...
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Catalogue: GRDC Media
A lime calculator released by the Liebe Group, produced with funding from the Grains Research and Development Corporation (GRDC), can help determine the appropriate quantity and costs of lime (including incorporation methods) needed to address specific soil pH conditions... Another useful tool is the Lime Comparison Calculator, available at www.soilquality.org.au/calculators/lime_comparison on the Soil Quality website, which is supported by the GRDC Soil Biology Initiative II and Wheatbelt Natural Resource Management... The calculator can help growers compare the effectiveness of different lime products, which can be sourced from many places and have different characteristics...
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Catalogue: GRDC Updates
When we examine just the top 25 per cent of farmers we see that they still have a large variability in their returns in individual years... The highlighted results in Table 1 show the years in which these businesses generated exceptional returns... We have used an ROC of greater than 10 per cent as a measure of this...
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Catalogue: Ground Cover
A match made in canola heaven.. In the first series we look at how growers and researchers teamed up to turn canola into one of the mainstays of today's cropping system... "Over a decade of experiments, our team demonstrated the rotational benefit of canola, and growers saw that while it could be expensive and tricky to grow, it was profitable if you took a two-year view," he says...
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Catalogue: GRDC Updates
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 chickpea (Felton et al. 1998; Marcellos et al. 1998; Herridge et al. 1998)... The difference between N2 fixation of chickpea and fababean is highlighted in Table 2, using data from the NSW DPI long-term rotation experiments and commercial crops in northern NSW... One of the objectives of the long-term no-tillage experiments of NSW DPI (Felton et al. 1998) was to compare chickpea and fababean in terms of N2 fixation and rotational benefits...
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Catalogue: Ground Cover
An authority in soil science is among those suggesting closer long-term scrutiny of soil health using precision agriculture (PA) technology and on-farm trials to rectify areas where crops under-perform because of poor water use efficiency... Esperance-based David Hall, of the Department of Agriculture and Food, Western Australia (DAFWA), says root growth and water use by crops are often restricted by subsoil constraints including sodicity, salinity, boron toxicity and acidity which, to some extent, can be alleviated by applying gypsum... At the Mt Madden Field Walk in September 2010, Mr Hall observed the crop growth differences between the treatments highlighted the short-term benefit of gypsum in helping to increase crop emergence, root growth, water infiltration and water storage...
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Catalogue: GRDC Updates
Getting nitrogen (N) into the crop efficiently and effectively.. A system level assessment of NUE can be made using a partial nutrient balance (N removed in grain/N applied) and partial factor productivity (grain produced/N applied)... There would need to be compelling circumstances to justify moving away from top-dressed urea applied to the crop as the season unfolds...
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