Comprehensive Prevention and Control Techniques of Vegetable Plutions

Cabbage, broccoli, radish, Chinese cabbage and other cruciferous vegetables, clubroot disease, is a common major disease.

First, the harm to the symptoms to endanger the roots, resulting in the main root or lateral roots appearing in size, shape like fingers, short rods or spherical tumors, severe root tumors up to dozens, string together. After the illness, it can result in a significant reduction in yield or even a loss.

The cruciferous vegetable clubroot disease is a fungal disease, and the root pediculatum prefers acidic soils. In general, crucifer crops are most often associated with continuous cropping plots, acidic soil plots, low-lying wetlands, and poorly drained plots. Fields with excessive nitrogen fertilizers are more severe.

Second, comprehensive prevention and control measures to prevent clubroot disease should take comprehensive prevention and control measures.

(1) Physical control: It is best to implement rotation of paddy or dry crops or rotate with non-cruciferous crops for 3 to 5 years. Combined with deep plowing, it can effectively reduce the occurrence of diseases. In addition, lime can be added to reduce soil acidity to reduce the incidence.

(b) chemical control: First, do a good job of seed disinfection. Before sowing, soaking in warm water at 55°C for 15 minutes, then soaking for 10 minutes with 10% suspension of cyclosulfuronazole 2000~3000 times, sowing after sowing. The second is seed bed disinfection. It can be sprayed with 50% sodium propionate soluble powder 500 times solution or 10% suspension solution of Cyazolamidazole 1000 to 1500 times, and the soil depth is about 15 centimeters. The third is seedling sterilization. Before transplanting, seedlings shall be soaked with root water or rooted water with appropriate concentration (15%) of lime water or 10% suspension of cyclosulfuronazole for 1500-2000 times to prevent germs from invading the roots. Fourth, disinfection and sterilization of Datian before transplanting. The agents used were fluazinam and spectrophotometric. The fluazinam spray-mixed soil treatment is a highly effective drug for controlling clubroot disease. However, when the concentration is large, it has an inhibitory effect on the root growth of the seedlings, and it is not suitable to perform centralized treatment such as irrigating roots. 60% of the spectrophotometers are generally sprayed with 750 times, and used as field soil disinfection treatment, the effect can reach 70%~80%. The fifth is the control of spraying after onset. After C. cruciferae vegetables exhibit clubroot symptoms, they can be used to irrigate the roots with a 10% suspension of Cyazosulfuron 1500-2000 times, or with a 75% chlorothalonil wettable powder 800 times, or with 20% quinoline. Trimethoprim wettable powder 1000 times, on the base of the diseased plants sprayed and controlled.

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