MySheen

How to control Botrytis cinerea of rose

Published: 2024-11-22 Author: mysheen
Last Updated: 2024/11/22, Botrytis cinerea mainly harms flowers and twigs. After the bud is infected, it is waterlogged and irregular at first, and the spot expands continuously, so that the whole bud becomes soft and rotten. When the diseased buds wither and hang on the diseased tissue, the pathogen will also invade the branches that have been picked flowers, and a large number of gray mildew layers will be produced in the disease under warm and humid conditions. Prevention and control measures 1. Timely removal of diseased flowers, removal of withered presbyopia, and concentrated burning. two。 Greenhouse cultivation should pay attention to ventilation and avoid excessive humidity. 3. It can spray 65% Dysen zinc wettable powder 600 times liquid and 75% chlorothalonil wettability at the time of onset.

Botrytis cinerea mainly harms flowers and twigs. After the bud is infected, it is waterlogged and irregular at first, and the spot expands continuously, so that the whole bud becomes soft and rotten. When the diseased buds wither and hang on the diseased tissue, the pathogen will also invade the branches that have been picked flowers, and a large number of gray mildew layers will be produced in the disease under warm and humid conditions.

Prevention and control measures 1. Timely removal of diseased flowers, removal of withered presbyopia, and concentrated burning. two。 Greenhouse cultivation should pay attention to ventilation and avoid excessive humidity. 3. During the onset of the disease, 65% Dysen zinc wettable powder, 75% chlorothalonil wettable powder or 70% methyl topiramate wettable powder 1500 times can be sprayed.

 
0