Many details of the disease cycle are unknown, but long periods of leaf wetness seem to play a distinct role. If you’re worried that you might have Leaf Blight or some other confusing lawn disease, give us a call! We’ll send our Service Manager out free of charge to assess the situation and provide advice. Ascochyta blight is a minor, but aesthetically obvious, disease that occurs in warm periods in late spring or early summer after periods of heavy rainfall or high humidity. As the name implies, the primary symptom is blighted leaves. This fungus has been documented on many turfgrasses, but more common on tall fescue, Kentucky bluegrass, and perennial ryegrass. Given time, the lawn should fully recover from the disease □ If it doesn’t recover after our treatment, at the very least, the fungus will be out of those areas, so that you can reseed or resod to get the lawn looking great again. Ascochyta leaf blight is caused by nearly 80 different species of Ascochyta. Keep in mind that Leaf Blight is a foliage disease (as opposed to root), so it will rarely kill your lawn or other affected plant. We recommend not watering for 48 hours after each treatment for best results. Ascochyta leaf blight can be induced by plant stresses such as drought and low fertility. Aim to use the 'cleanest' seed possible with 5 per cent to nil levels of ascochyta present. Corwin, ) Fungicide Program Fungicides are not typically used to control Ascochyta leaf blight. Select the variety with the highest level of resistance to the important disease risk in your district. Leaf Blight requires two applications two weeks apart. An integrated approach is the key to successful management of ascochyta blight in faba bean. If you’re already in the midst of a war of attrition with Leaf Blight, we can help! We have a treatment that our Service Manager will apply to the lawn. Lawn fungus control tip: To manage this summer lawn fungus, reduce thatch with core aeration at least once a year to allow better water penetration. Its claim to fame: it can appear suddenly, even overnight. It’s a misconception that mowing companies can transfer the disease between houses according to the CSU Turf School, the fungus that leads to Leaf Blight is already present in every lawn, and caused by environmental factors. Ascochyta Leaf Blight causes large irregular patches of turf to quickly turn straw-brown in color and appear dead. Symptoms and Signs Ascochyta blight can infect all above-ground plant parts (Figure 1), and can be found anytime after crop emergence. Ascochyta blight of pea (Ascochyta pisi) and lentil (Ascochyta lentis) are caused by different species, and do not cause Ascochyta blight on chickpea. Of course, the easiest way to treat Leaf Blight is just to prevent it from happening in the first place! The best way to do so is to mow regularly and to keep the grass at a healthy height of 2.5 – 3″ (this is our regular setting □ Also, keep your blades sharp (we sharpen ours daily) and fertilize throughout the season. rabiei) causes Ascochyta blight of chickpea.
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