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crop disease

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Catalogue: GRDC Publications
Growers do not have access to varieties with resistance to the key exotic pests and disease... The project will proceed in two phases... The project is about optimizing pesticide sprayapplications by: identifying spray technologies and spray settings with low risk of spraydrift, applying pesticides in accordance with latest knowledge about pest behaviour in response to pesticides andtherefore minimizes the risk of target pests developing resistance, and by using pesticides with documented efficacyagainst target pests...
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Catalogue: GRDC Media
Wheat infected with crown rot.. Prof. Sutherland said the first step in finding a solution was identifying lines of wheat with significantly better resistance these were five low-yielding, unadapted wheat germplasm that did not grow well in Australian conditions... "The aim then was to get this resistance into lines of wheat adapted to Australia possessing other traits that farmers require," Prof. Sutherland said...
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Catalogue: GRDC Updates
If there is a history of sclerotinia stem rot in your district causing yield loss, be prepared to use a foliar fungicide to reduce yield loss... Research will be conducted to investigate this issue in 2014... We can use the fungal life traits to manipulate the fungal population, by changing cultivars with different sources of resistance, the selection pressure on the fungal population is constantly changing...
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Catalogue: Ground Cover
Crop yields in northern Europe could be hit after widespread heavy rain disrupted spraying and caused a resurgence in crop diseases... Record rainfalls have seen cases of septoria in wheat crops surge following several years of the disease being relatively dormant... During April to May, France - Europe's largest wheat-producing country - had 70 per cent more than its usual rainfall for the period, while the UK recorded its wettest April in 100 years, recording 120 millimetres...
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Catalogue: GRDC Updates
The extra water used by a well grown crop can reduce drainage volumes and reduce nitrogen exports, even if fertiliser is used to achieve that extra growth... : The lowest upfront application of nitrogen that facilitates reasonable crop establishment and yield potential minimises nitrogen exports, minimises sunk costs (i.e. costs which cannot be recovered) in the case of an adverse season, and allows the farmer the flexibility to adjust their fertiliser strategy, and potential gross margins in response to seasonal conditions... Nutrients such as N, that may be exported dissolved in water (i.e. nitrate), often comprise a larger proportion of total exports when compared with systems using deep cultivation (>250 mm) (Kimmell et al., 2001)...
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Catalogue: GRDC Updates
If fungicides are required, make sure they are applied in the early stages of the epidemic... Spot form of net blotch (SFNB) was the dominant foliar disease of barley, causing yield and quality losses where susceptible varieties were grown in infected stubble and left untreated... In addition to mixing or rotation of fungicides an integrated approach to disease control that includes crop rotation and avoidance of susceptible cultivars will reduce inoculum loads, and reduce the likelihood of resistance to fungicides developing...
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Catalogue: GRDC Factsheets
Changes in Septoria tritici blotch resistance to fungicides have been detected in the southern grain growing region, especially where wheat is sown into wheat stubble... Two gene mutations in STB detected by NSW Department of Primary Industries indicate resistance to some fungicides (see Case Study)... Currently none of the products with an azole/strobilurin combination in Australia used on wheat are registered for use on STB...
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Catalogue: GRDC Factsheets
Changes in Septoria tritici blotch resistance to fungicides have been detected in the southern grain growing region, especially where wheat is sown into wheat stubble... Two gene mutations in STB detected by nSw department of Primary industries indicate resistance to some fungicides (see Case Study)... CASE STUDy: Managing STB resistance to fungicides increasing resistance of STB to some azole fungicides has been detected in Australia...
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