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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: 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: 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: Ground Cover
Advances in soil health, salt tolerance, break and cover cropping, nutrient efficiency, and molecular breeding for improved wheat and canola are in the sights of researchers now working under the one high-tech roof with the recent opening of AgriBio in Victoria... He says improvements in wheat and canola have the capacity to be fast-tracked through advanced genome editing technologies developed in partnership with Dow AgroSciences and an AgriBio team led by Professor German Spangenberg... The new platform for genome editing, developed with Dow AgroSciences, will enable researchers to make precise improvements to the genetics of wheat and canola by allowing the introduction or removal of genetic information at precise locations in the plant genome for specific trait development...
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Catalogue: Ground Cover
Greg Bender, GRDC Program Consultant "Diverse" is a way to describe pastures: diverse uses in different farming enterprises and regions, and biodiversity of species including annual and perennial grasses, legumes, herbs and shrubs... Clearly pastures make a valuable contribution to the production of agricultural commodities, but the inherent diversity of pastures makes it difficult to estimate their total economic and environmental value to Australia... Ongoing support for research, development and extension (R,D&E) in pasture varieties, agronomy and management from federal and state governments, universities, CSIRO and rural R&D funding organisations is an essential part of the success of pastures...
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Catalogue: GRDC Publications
Identify where the benefits of fluid fertilisers are likely to be significant, in terms of climate, soil type and cropping system... The conclusion is that while there does not appear to be any yield advantage associated with using Flexi-N through the boom, as opposed to urea topdressed prior to sowing, there does appear to be an advantage when it is banded... The freight was approximately $40/tonne, compared to solid fertiliser delivered bulk, which is approximately $20/tonne...
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Catalogue: Ground Cover
Mouldboard plough outperformed spader for weed suppression.. When the weed population was checked in March 2010 after a wet summer, Andrew says the results showed mouldboard ploughing had outperformed spading... The paddocks nominated for mouldboard ploughing are scheduled for the end of the sowing program, the delay allowing time for the opening rains to have thoroughly wet the soil down to 300mm...
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Catalogue: GRDC Final Reports
Effect of concentrated sulphuric acid and chilling on the cumulative germination of Cuscuta planifora under laboratory conditions at Northam in 2005 225 200 No acid, no chill Acid + no chill 175 No acid + chill 150 Acid + chill 125 100 75 50 25 0 3 4 5 6 7 10 11 12 14 17 19 Days after sowing dodder seeds.. Time taken by emerged Cuscuta palnifora plants to begin circumnutation on the host crop plants under glasshouse conditions at Northam in 2005 n35 o i t3 a0 t u n25 m u c20 r i c15 t s r1 i0 f o t5 s y a0 D.. Effect of time of sowing on survival of Cuscuta planiflora plants the in lupin crop only under glasshouse conditions at Northam in 2005..
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Catalogue: GRDC YouTube channel
65.63: Maarten Ryder: Now we 69.11: mix those together in the liquid form or keep the rhizobia together with trace element on 76.689: the seed and then coat the rhizobia onto that... 102.74: Narrator: And the reason for not mixing metals with 105.179: inoculants is because rhizobia are sensitive and high concentrates of elements such as 110.549: Zinc or Copper can be toxic to the rhizobia... 113.609: Maarten Ryder: For example some of these treatments are actually 118.549: an acid pH so if we mix together a liquid that is acid even though we 124.149: add zinc and copper but if that liquid is acid the rhizobia will die off quite quickly 130.21: possibly because of the acidic conditions as well...
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Catalogue: Ground Cover
Mouldboard ploughing could help lift yields in sandy soils.. Trials in WA show mechanical soil inversion could reduce soil constraints and herbicide-resistant weeds in sandy soils By Nicole Baxter Key points Researchers say inverting sandplain soils using a mouldboard plough or rotary spader once every 10 to 15 years could help manage 'hostile' subsoils, non-wetting sands and herbicide-resistant weeds... Dr Davies says deep-ripping to remove compaction resulted in similar increases in productivity, but the added benefits of mouldboard ploughing include improved weed control, reduced soil water repellence and an opportunity to increase soil pH through lime incorporation...
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