A Detailed Guide to the Latest Control Methods for Common Winter Melon Pests and Diseases
Winter melon is favored for its beauty and weight-loss benefits, but pest and disease problems are unavoidable during winter melon cultivation. If not controlled properly, they can lead to low yields and poor quality. Therefore, only by understanding the characteristics of its pests and diseases can you prescribe the right remedy and reduce the damage to a minimum. Below, Qinnongwang brings you common control methods for winter melon pests and diseases.
1. Phytophthora blight
Phytophthora blight mainly harms winter melon fruit. When the disease occurs, water-soaked lesions appear on the fruit, with a ring of white mold around the outside of the lesions. If you cut open the affected area, you will find that the flesh inside has already turned brown. If not treated in time, the entire fruit eventually rots.
Control methods: This disease survives the winter in the soil as pathogens and spreads through rainwater the following year. Choose varieties with strong growth and strong disease resistance, and deeply plow and disinfect the soil before winter to prevent the pathogens from surviving the winter safely. Spray chemicals regularly during the fruiting period for control, and spray Kangbo chemical for treatment when the disease occurs.
2. Gummy stem blight
Gummy stem blight mainly occurs in environments of 18-25 degrees and high humidity. When the disease occurs, brown lesions appear on the leaves, along with small black spots. Lesions form on the stem nodes, which turn black and exude a yellow-brown secretion. In severe cases, the stems and leaves rot into a tangled, hemp-like mass.
Control methods: Before planting, use thiram wettable powder to dress the seeds, eliminating pathogens on the seed surface and reducing the chance of disease occurrence. Practice crop rotation, control soil moisture, drain promptly, spray chemicals regularly for control, and use chlorothalonil for treatment when the disease occurs.
3. Fusarium wilt
The conditions for Fusarium wilt and Phytophthora blight are similar. The pathogens also safely overwinter in the soil and spread through various channels, with a particularly high incidence rate in environments with relatively high humidity. When the disease occurs, the leaves begin to fade and wilt. When humidity is relatively high, pink or white mold appears, the stem base becomes wet and rotted, the inside turns brown, and the plant ultimately dies from wilting.
Control methods: Likewise, disinfect the seeds, deeply plow and sun-bleach the soil before winter, practice crop rotation, spray chemicals regularly for control, and when the disease occurs, use copper succinate-glutarate wettable powder as a root drench for treatment.
4. Pests
The main pests are aphids and red spider mites. They both like to attach to the leaves and suck on the leaves or stems, branches, and foliage. Yellow-white lesions appear on the leaves, and in severe cases the leaves wither and fall off, affecting yield.
Control methods: Promptly clear the weeds around the area and spray with a dedicated insecticide to eliminate the pests.
The above are the common control methods for winter melon pests and diseases brought to you by Qinnongwang. Observe carefully during cultivation, and detect and control problems early, so as to achieve high and quality yields of winter melon. For more agricultural knowledge, please stay tuned to Qinnongwang.