For several years now, tomatoes, eggplants, and green pepper, the standard summer vegetables of the eggplant family, have been affected by bacterial wilt disease. During the rainy season, they suddenly wither and die just as the rainy season is about to begin. It is a troublesome pathogen for which there is no other remedy but soil sterilization. Since tractors are used to plow the fields, it is said that the fungus is spread over the entire field.
I have tried the following two things since last year for comfort. So far, no bacterial wilt disease has occurred. We do not know which of the two is working.
Thermal disinfection by solar heat
The day before the rain, the field is sprinkled with rice bran and plowed with a tractor. After the rain has allowed it to absorb plenty of water, cover it with transparent mulch.
It is said that if the temperature rises above 60°C with the heat of the sun and the fermentation heat of the rice bran, the blue blight disease will die. What about bacteria deep in the soil?
Mixed planting of garlic and summer vegetables
Last fall I opened the middle of the rows and planted garlic on the sides. Then this spring, I planted tomatoes, eggplants, and green pepper in the middle of the rows. The garlic was planted as a companion plant.
(The garlic ate the original fertilizer, and the growth of summer vegetables was not good, so I hurriedly added fertilizer.)
There was no effect.
It appeared when the rain continued and the temperature suddenly became high. The bacterial wilt disease was still ineffective. I just have to pray that it doesn’t spread to the whole area.
I found literature that L-histidine seemed to be resistant to blue blight, so I dripped it around the area, even though it was late. (It’s an essential amino acid, so I took it, and it cleared my head and blew away my fatigue.)
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