What are the methods for preventing and controlling rose rot?
In the production of pollution-free edible roses, preventing pests and diseases and keeping the rose plants vigorous is the best way to control disease. Usually the following preventive measures are taken: 1. Select disease-resistant lines and use healthy plants as seedlings. 2. Avoid applying too much nitrogen fertilizer, so that the plants do not grow leggy and become insufficiently sturdy, and are prone to...
Rose rot mostly starts from the base of the petals and the flower stem. This rotting phenomenon has nothing to do with humidity or temperature; rather, it is caused by ethylene damage during the storage of roses. The entire stem of the rose becomes lignified in fiber, and the flower stem is the most fragile part and must bear the weight of the flower head. Therefore, the flower stem is most vulnerable to attack by pathogens, which triggers the generation of endogenous ethylene. A large amount of nutrients being supplied upward is blocked and accumulates here, generating a large amount of heat energy, which accelerates ripening and rotting. Therefore, when a rose rots, the base of the petals and the flower stem often develop a vinous rot and shed flowers and petals within just 1-2 days.The best way to prevent this phenomenon is to carry out preservation treatment after the roses are harvested, in order to strengthen the lignified fiber growth at the flower stem and prevent the generation of endogenous ethylene. If preservation treatment was not carried out after the roses were harvested, the flower shop should also carry out the corresponding preservation treatment after receiving the goods.