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Catalogue: GRDC Media
A near-perfect start with good summer and autumn rain coupled with mild temperatures saw crops jump out of the ground... Insect pests including green peach aphid (GPA) and the resulting beet western yellows virus (BWYV or synonym, turnip yellows virus) and diamondback moth (DBM) both proved headaches for growers at different stages of the growing season... Mr Baker says the colonisation of DBM in canola crops this year looks to be at a lower level for much the same reason as the risk of GPA and BWYV is this year - a much drier summer and early autumn than last year and less of a green bridge on which to survive...
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Catalogue: GRDC Media
A near-perfect start with good summer and autumn rain coupled with mild temperatures saw crops jump out of the ground... Insect pests including green peach aphid (GPA) and the resulting beet western yellows virus (BWYV or synonym, turnip yellows virus) and diamondback moth (DBM) both proved headaches for growers at different stages of the growing season... Mr Baker says the colonisation of DBM in canola crops this year looks to be at a lower level for much the same reason as the risk of GPA and BWYV is this year - a much drier summer and early autumn than last year and less of a green bridge on which to survive...
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Catalogue: GRDC Media
Author : Sharon Watt SARDI principal research scientist Dr Jenny Davidson says it will be important to monitor this year's pulse crops for the breakdown of resistance to Ascochyta blight... Pulse growers are advised to monitor this year's crops for the breakdown of resistance to Ascochyta blight and report any anomalies to the South Australian Research and Development Institute (SARDI*)... "If you see a breakdown in resistance, let us know straight away," she said Growers and advisers can report observations to Dr Davidson by phone on 08 8303 9389 or email jenny.davidson@sa.gov.au ...
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Catalogue: Ground Cover
Growers who have planted back-to-back lentils or tight lentil rotations this season are urged to monitor crops closely for ascochyta blight during August, particularly if a wet winter prevails... SARDI senior pulse pathologist Dr Jenny Davidson says if growers observe symptoms of ascochyta blight in PBA Hurricane XT and PBA Jumbo2 , they should send leaf samples to SARDI... "In high-risk areas such as the Yorke Peninsula, those growing susceptible to moderately susceptible varieties such as PBA Flash and Nipper need to do a vegetative spray if ascochyta blight is present in order to hold the disease back...
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Catalogue: GRDC Media
Pathologists and plant breeders are advising growers planning to grow back-to-back lentil crops this season that the practice can cause a high disease risk and that a disease management strategy is needed throughout the growing season... Leader of the lentil breeding program at Pulse Breeding Australia Dr Matthew Rodda says placing lentils under high pressure by planting them back-to-back means disease pathogens can overcome resistance genes... Pulse pathologist Dr Jenny Davidson from the South Australian Research and Development Institute, a division of Primary Industries and Regions SA, says growers need to make their own decisions about planting lentils in tight rotations but need to be aware of the risks in breaking down genetic resistance and the implications for the industry...
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