Blight On 西红柿 – Tomato Blight Treatment And Prevention

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什么是番茄疫病? Blight on tomatoes is caused by a fungal infection and like all fungi, they are spread by spores and require damp, warm weather conditions to flourish.


什么是番茄疫病? It’s actually three different fungi that attack tomatoes in three different ways at three different times.

Septoria枯萎, also called leaf spot, is the most common blight on tomatoes. It usually appears at the end of July with small black or brown marks on the lower leaves. While fruits may remain uninfected, the leaf loss can affect yield as well as exposing the fruit to 日灼病. Overall, it is the least harmful 番茄枯萎病. Solutions to the problem include watering only at the base of plants, and avoiding the garden while foliage is wet.

早疫病 appears after heavy fruit set. Rings resembling targets develop first on the leaves and cankers soon grow on the stems. Black spots on the almost ripened fruit turn into large bruised spots and the fruit begins to fall. Because the crop is almost ready for picking, this may be the most disappointing 番茄枯萎病. 治疗是很简单的. To prevent 番茄枯萎病 from invading next year’s crop, burn everything the fungus may have touched including fruit and foliage.

晚疫病 is the least common blight on tomatoes, but it is, by far, the most destructive. 浅绿色, water soaked spots on the leaves quickly grow into purplish-black lesions and stems turn black. It attacks in rainy weather with cool nights and quickly infects fruits. Infected fruits show brown, crusty patches and rot quickly.

This is the blight that caused the Great Potato Famine of the 1840s and will quickly infect any potatoes planted nearby. All potatoes should be dug and disposed of as should all tomato plants and fruit affected by this 番茄枯萎病. 治疗是很简单的. Burn everything the fungus may have touched.

How to Prevent Tomato Blight

Once a blight on tomatoes takes hold, it’s very hard to control. After identification, 番茄枯萎病 treatment begins with 杀真菌剂治疗, although when it comes to 番茄枯萎病, solutions really lie in prevention. Use fungicides before the fungus appears and they should be applied regularly throughout the season.

Fungus spores are spread by splashing water. Stay away from the garden while foliage is wet from dew or rain. Avoid watering in late afternoon or evening so that water can evaporate from the leaves and, 如果可能的话, water the ground and not the foliage. Most fungi grow best in the warm, wet dark.

旋转作物 as often as possible and never turn any tomato debris back into the soil. Use healthy transplants from a reliable nursery and remove damaged lower leaves regularly since that’s where most fungi attacks begin. Remove all plant debris at the end of the growing season so the spores have nowhere to over winter.

什么是番茄疫病? It’s a series of recurring fungal infections that can be curtailed with good garden housekeeping and simple 杀真菌剂治疗.

请注意: Any recommendations pertaining to the use of chemicals are for informational purposes only. Chemical control should only be used as a last resort, as organic approaches are safer and more environmentally friendly.

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