The latest towel gourd pest control techniques and methods course

Towel gourd is a cucurbitaceae climbing herb, fruit is a summer vegetable, widely planted all over the country, with high planting prospects and edible value, in the process of planting towel gourd diseases are virus disease, downy mildew, blight, powdery mildew and so on. Pests are melon wild borer, melon aphid, Liriomyza sativae and so on. Let's take a look at the disease and pest control techniques of towel gourd.

Towel gourd cotton rot

[harm characteristics] the damage period of towel gourd sheath rot is divided into seedling stage and melon setting stage, which leads to rotten melon after being killed.

[prevention and control methods] mainly focus on agricultural prevention and control, pay attention to the matching of three ditches, reduce field humidity, balance fertilization, prevent biased application of nitrogen fertilizer, strengthen chemical control, and mainly spray with Bordeaux liquid of 1-type and 2-type. When there is a lot of overcast and rainy weather in melon period, when the humidity is high, it is necessary to take precautions early and diligently.

Towel gourd downy mildew

[hazard characteristics] Downy mildew of towel gourd is not easy to occur under general environmental conditions. A large number of leaves withered during the disease, which directly affected the yield and quality of melon.

[control methods] with the combination of agricultural control and chemical control, agricultural control should properly increase the application of phosphorus and potassium fertilizer in order to improve the disease resistance of plants, and the diseased leaves should be removed in time when the disease is first seen, so as to reduce the spread of pathogens. 500 times metalaxyl can be selected for early root control, and 2000 times poisonous mildew should be sprayed at the beginning of the disease, once every 7 days.

Towel gourd virus disease

[hazard characteristics] towel gourd virus disease can be transmitted by aphids, agricultural operations and sweat contact.

[control methods] disease-resistant varieties were selected for ①. Disease-free and strong seedlings were cultivated by ② and planted in advance. ③ can control aphids in time. At the initial stage of the onset of ④, 20% virus A warm powder and 5% bacteriological clear water agent could be sprayed.

Towel gourd blight

[hazard characteristics] the pathogen comes from seeds or soil and spreads through wind, rain and irrigation water.

[control methods] resistant varieties were selected for ①. ② implements crop rotation and selects fields with moderate height and convenient drainage and irrigation. At the initial stage of the onset of ③, 40% ethylphosphonium aluminum 200x solution and 75% chlorothalonil solution were sprayed once every 7 days for 2-3 times.