How to treat soil-borne diseases of beans

Bean is a common vegetable in China, which is planted in almost every area, but during the planting period, soil-borne diseases will occur. How to treat bean-borne diseases?

First, how to treat soil-borne diseases of beans?

Bean-borne diseases can be effectively controlled with 1000 times of carbendazim wettable powder or 1000 times of thiophanate methyl wettable powder, once every 7-10 days. Can also be 50% carbendazim wettable powder 500g mixed with 200 kg dry soil, ditch applied to the sowing line, 200 kg per mu.

Second, what is the soil-borne disease?

Soil-borne disease refers to the disease caused by pathogens living in the soil and infecting crops from the roots or stems of crops when the conditions are suitable. Nowadays, many crops will have soil-borne diseases in the growth process, but the performance will be very different in different crops.

Third, how are soil-borne diseases caused?

1. Continuous cropping

Continuous cropping is the main man-made factor in the formation of diseased soil, the main reason is the continuous planting of a kind of crops, so that some of the corresponding bacteria can reproduce year after year, accumulate a large number of bacteria in the soil, form diseased soil, and occur every year.

For example, continuous cropping of Solanaceae vegetables, blight, Fusarium wilt, etc., serious; watermelon continuous cropping, serious Fusarium wilt; ginger continuous cropping, can lead to serious ginger plague; strawberry continuous cropping for more than two years, dead seedlings 30% 50%.

2. Improper fertilization

Improper application of chemical fertilizer, especially nitrogen fertilizer, can stimulate the growth of Fusarium, Verticillium and Rhizoctonia in soil-borne bacteria, thus aggravating the occurrence of soil-borne diseases.

3. Nematode invasion

The damage of nematodes to soil nematodes is closely related to the disease. Soil nematodes can cause wounds in plant roots, which are beneficial to bacterial infection and aggravate the diseases. nematodes and fungal diseases often occur at the same time.