Use a registered product remember that most fungicides are protectants and are most effective if applied before disease development.įungicides should be applied according to label directions for use, ensuring the key points of spray timing and frequency are observed as well as grazing and harvest withholding periods. In areas of high risk, it may be necessary to apply foliar fungicides to protect crops especially if a susceptible variety is grown. Follow the recommended sowing dates for your district. Time of SowingĮarly sowing encourages early infection and increased levels of the disease. We specialize in Wildlife Food Plots Seeds, Lawn Turf Grass Seeds, Herbicides, Fungicides, Fertilizers, Insecticides, Termite Control, Pesticides and other. Rhizobia should be applied to seed immediately before sowing, especially on acid soils. Therefore, seed should be treated with fungicide and then inoculated with rhizobia in two separate operations. Seed treatments can have a deleterious effect on rhizobia. Use a registered seed treatment for the control of seed-borne diseases in lentil. Allow a break of at least 3 years between lentil crops. A program of stubble reduction may also be undertaken by grazing or burying to reduce the carry-over of infected stubble into the following season. Therefore, avoid planting this season’s crop near old lentil stubble. Infected crop residues can harbour Ascochyta lentis. There are a range of varieties available that are MR or R to Ascochyta infection with attributes to suit most lentil growing areas in Victoria. Use varieties with the greatest resistance. Only sow seed with less than 5 per cent Ascochyta infection and preferably use seed with nil infection. Using old or damaged seed can reduce seedling vigour and increase susceptibility to infection. Illustration by Kylie Fowler Management Clean Seed Anthracnose of Lupins: Exotic to Victoria and New South Walesĭisease cycle of ascochyta blight of lentil.Other factors, such as thick thatch, poor soil, over or under-fertilization, and dull mower blades can contribute to disease severity. Phomopsis Stem and Pod Blight of Lupins There are approximately 80 species of fungi in the genus Ascochyta that can cause Ascochyta leaf blight.Brown Leaf Spot/Pleiochaeta Root Rot of Lupins.Ascochyta Blight (Blackspot) of Field Pea.Thing is if there is any form of fungal resistance to the azoxy, plus the high disease pressure, plus it only being a preventative rate so if there is any fungus in the soil already that we do not see, plus a food source such as dead thatch, then those 4 things could contribute to a preventative not working as well.Identification & Management of Field Crop Diseases in Victoria I did a preventative of azoxy and it lasted maybe 2 weeks. The preventative rate i dont even trust unless im putting it down with another fungicide group. Cannot remember the biology behind why that happens though. The grass will begin to look worse before it gets better during the meltout. There is also a "melting out phase" of the grass that can occur after a fungicide is put down. If im not mistaken the azoxystrobin is labeled for 30 days, but under certain conditions its only 21 days. Toss in some wet dew in the morning, and the fungus will spread. The planted trees can also show signs of fungus as well.īut right now disease pressure is high, and if there is even a little bit of fungus in the soil, the right conditions will set it off. The areas of the lawn where the soil is more compacted and or the roots are shallow, will be the areas that are affected first. I'd say if the dead leaves are curled up, then there heat stress and drought.
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