MySheen

Control of Rhizoctonia solani at Seedling Stage of Dangshen

Published: 2024-11-09 Author: mysheen
Last Updated: 2024/11/09, The disease site is mostly at the stem base of the dry and wet junction below the epidermis. At the beginning of the yellow brown spot depression, the spot expanded around the stem and gradually immersed in the stem rot and die. Once infected quickly, die in pieces. Control methods: choose sandy soil with convenient drainage, good ventilation, and increase phosphorus and potassium fertilizer. 50% carbendazim wettable powder or 65% manineb wettable powder is selected for seed dressing according to 0.2%-0.3% of seed dosage; 50% carbendazim wettable powder or 65% manineb wettable powder can also be used.

The site of the disease is mostly at the base of the stem at the dry-wet junction below the epidermis. The initial yellow-brown disease spot sunken spot, the disease spot expanded around the stem and gradually soaked into the stem to rot and die. Once the infection occurs quickly, it will die in pieces.

Prevention and control methods:

Choose sandy soil with convenient drainage, good ventilation and increase the application of phosphorus and potassium fertilizer.

Choose 50% carbendazim wettable powder or 65% Dysen zinc wettable powder to mix seeds according to 0.2% Mel 0.3% of the seed amount; you can also use 50% carbendazim wettable powder and 65% Dysen zinc wettable powder to mix soil with 8 grams per square meter and use a rake deep on the border.

Spray treatment at the time of onset:

① 3.2% xanthate water agent after emergence, 10 grams per square meter to 3 kilograms of water.

② 3% Guangkuling water agent 700Mel 800 times liquid stem base watering or spraying effect is very good.

③ 70% dimethazone wettable powder 1000mur1500 times liquid or 50% carbendazim wettable powder 800x liquid 4ml 8kg per square meter is also very effective.

 
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