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Catalogue: GRDC Updates
Field trials on northwest NSW cracking clay soils (Vertosols) during 2011-2013 showed that surface application of urea led to ammonia volatilisation averaging 11% N loss when applied to fallow soils, and 5% N loss when applied to tillering wheat crops... Compared to urea, losses from ammonium sulfate were less, except when the soil contained >2% calcium carbonate (lime)... At the conclusion of the month, we sampled soils and plants (at in-crop and pasture sites) and measured soil nitrate and ammonium and plant total N. We did not measure N uptake into grain...
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Catalogue: GRDC Publications
Overall, barley diseases have the potential to cause very significant costs for farmers... Incidence is 30 per_cent frequency in 30 per_cent of the area, so that the average incidence of the disease affecting the crop is 9 per_cent... Overall, breeding contributes more than 25 per cent of the control for 14 diseases, cultural methods for 32 diseases, and pesticides for six barley diseases...
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Catalogue: GRDC Research Summaries
The allocation of resources for the control of barley diseases, both at the grower level when deciding whether to control a particular disease and at the national level when allocating funds for research and development, depends on an assessment of the losses caused by those diseases... The figures provide key insights into the importance of barley diseases in Australia... Barley diseases cause an estimated current average annual loss of $252 million, or $66.49 per hectare, to the Australian barley industry...
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Catalogue: GRDC Final Reports
We conducted 56 replicated plot experiments on a range of integrated disease management (IDM) strategies under this project aimed at reducing losses and refining management of these diseases... Three replicated trials were conducted in 2007 with 24 different treatments evaluated for the control of CR in both a bread wheat and durum variety... In collaboration with CAS, we tested stubble samples from 312 paddocks in northern NSW for levels of CR and CRR during this project...
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Catalogue: GRDC Updates
Key findings Novel trial design allows exact effect of crown rot on yield and grain quality to be separated from environment and site effects... Solid bars are the average yield loss for each variety across the 11 sites in 2007 obtained by directly comparing the yield of plots inoculated with the crown rot fungus with uninoculated plots at each site... Contact details Steven Simpfendorfer NSW DPI Tamworth Ph: 02 6763 1261 Email: steven.simpfendorfer@dpi.nsw.gov.au Richard Daniel Northern Grower Alliance Ph: 07 4639 5344 Email: richard.daniel@nga.org.au < Keep browsing 0 Responses to CROWN ROT - WATER INTERACTION CRITICAL TO LOSSES..
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Catalogue: GRDC Research Summaries
The current loss from diseases in the Australian oilseed industry averages $137 million per year, or 27.6 per cent of the gross value of oilseed production... The losses are due to diseases caused by fungi, nematodes, bacteria, viruses and phytoplasmas... The allocation of resources for the control of oilseed crop diseases, both at the grower level when deciding whether to control a particular disease and at the national level when allocating funds for research and development, depends on an assessment of the losses caused by these diseases...
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Catalogue: GRDC Final Reports
Experimental data are presented that show that fallow management, in particular that of weeds and residue cover, not only affects the amount of water stored or lost during the summer, but also has an effect on the loss of water past the root zone during the subsequent growing season... Model simulations capture these effects and a scenario analysis indicates that retaining residues past sowing increases the risk of deep water loss relatively rapidly... The effects of different residue management will be greater in wetter summers...
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Catalogue: GRDC Factsheets
EARLY PLANNING KEY TO DIRECT HEADING Many grain growers fear that direct heading canola is risky and that high shattering losses are inevitable... Yield losses due to shattering while direct heading are likely to be lower than yield losses associated with windrowing a crop too early, such as a week or more before 40 to 60 per cent of seeds on the main stem have changed colour... Direct heading is not suited to paddocks with significant variations in soil type and/or topography - factors that affect plant-available water and plant maturity...
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Catalogue: GRDC Factsheets
direct heading allows for maximum yields if canola is harvested on time and the header is set-up correctly to avoid shattering... yield losses due to shattering while direct heading are likely to be lower than yield losses associated with windrowing a crop too early, such as a week or more before 40 to 60 per cent of seeds on the main stem have changed colour... Direct heading is not suited to paddocks with significant variations in soil type and/or topography - factors that affect plant-available water and plant maturity...
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Catalogue: GRDC Factsheets
EARLY PLANNING KEY TO DIRECT HEADING Many grain growers fear that direct heading canola is risky and that high shattering losses are inevitable... Yield losses due to shattering while direct heading are likely to be lower than yield losses associated with windrowing a crop too early, such as a week or more before 40 to 60 per cent of seeds on the main stem have changed colour... Direct heading is not suited to paddocks with significant variations in soil type and/or topography - factors that affect plant-available water and plant maturity...
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