This video covers growing of tomatoes within a greenhouse.
Question by glassescarblue: how to stop blight in tomato plants?
Does anyone know of how to stop blight from hitting tomato plants and killing them?
Best answer:
Answer by Rattis
I dont know how to treat it but I suggest that you watch some videos from growingyourgreens youtube channel.
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There are several fungi that attack tomatoes. Some are soil borne and others are spread through the air.
All fungus needs moisture to survive. Staking your plants and pruning suckers lets air circulate so they dry after rain or heavy dew. Adequate spacing is important for the same reason. This is about all you can do to prevent airborne fungus including late blight from living on your tomatoes. If you see late blight on a tomato pull the plant and put it in a plastic trash bag to contain the spores. It is OK to harvest the fruit and ripen it in the house.
Another common tomato fungal disease is leaf spot. This is a soil borne fungus that gets on tomato leaves when heavy rains splash dirt onto the leaves. Next storm the rain splashes from lower leaves to higher leaves and the problem works its way up the plant. The same air circulation helps here. Mulching with straw helps prevent the initial infestation. Removing affected leaves removes the fungus that is already on the plants. It is recommended that you don’t plant tomatoes in the same place for the next three years.
Don’t handle your tomato plants when they are wet. If you handle a diseased plant, wash your hands and tools before going to the next plant.
They say a spray solution of horse tail on the plants, and on the ground may work. I have not tried it, but if you want to try it, you could probably use horse tail capsules that people use as health supplements.
One other thing that may work is to cover the whole ground with black plastic, cut crosses in the plastic, and put your plants in. The problem is that the spores are in the air too, and for that you have to have white transparent plastic to placed on two sides of your plants from the ground up, and very close to the plants. Later in the season when the blight is no longer a problem, you can remove the plastic.
put a tablespoon of milk powder in the hole when you plant the tomato , the same for pumpkins and other cucurbits