Prevent and treat 3 kinds of diseases of bitter gourd
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When the blight occurs, a water-stained dot appears first on the melon strip, and then gradually turns into a brown-yellow spot. The diseased part has a small black spot, and the diseased melon tissue later becomes fragile and broken. The control of bitter gourd blight can be done with 40% Prochloraz Emulsion (1000 times solution) and 50% Formamide WP (750 times solution) spray.
At the onset of anthrax, the lesions on the melon strips were yellow-brown to dark brown, round-shaped water-stained, and later became brown-yellow spots. When the humidity was high, the diseased part was wet and rot, and the diseased part was dry rot when dry. Shape, depression, lighter color, deeper edges, surrounded by water-stained yellow-brown halo. The melon tissue of late disease turned black, but it is not bad and it is not easy to break. Anthracnose occurs in bitter gourd and can be sprayed with 25% Bromoacetonitrile WP 500 times.
When the bacterial keratoses occurred, the lesions on the melon strips appeared as water-stained green dots at the beginning and became brown afterwards. The small lesions merged into large lesions and the fruit was wet and rot. Basic copper sulfate, kasugamycin and other drugs can be used for prevention.
The above-mentioned several kinds of diseases have serious sheds, which are mainly caused by relatively high humidity. More bitter gourd vines, resulting in a sheltered environment, it is more difficult to ventilate and ventilate, so it is timely to pruning pan plants, so that the internal ventilation of plants. Watering is mainly for pouring small water, reducing the humidity in the greenhouse.