Disease Control of Chinese Rose

Powdery mildew is a fungal disease that harms flowers in an environment with poor ventilation and high humidity. There is a phenomenon of powdery mildew on the tender leaves, which is called powdery mildew. 600 times the liquid of strychnine or 400 times of the solution can be used. Black spot is harmed by fungi, overwintering with mycelium or conidia on diseased residual branches or fallen leaves on the soil, and absorbing water in the next spring to produce conidia, which is mainly transmitted by wind and rain. Rainy, foggy and dewy weather is conducive to spore germination, so it is easy to occur. When there are water droplets on the leaves, the spores can germinate and invade after 6 hours. Under the condition of high air humidity in rainy season, it is beneficial to the reproduction of bacteria and the prevalence of diseases. The foliar surface can be sprayed with 0.10 Murray 0.20 Baume sulfur mixture and 50% carbendazim wettable powder 500 murmur1000 times. The germs should be eliminated early in the comprehensive control. In early spring, pruning was carried out before the tree potential was not active after the rose came out of the cellar. Before sprouting, the rose was sprayed comprehensively and carefully (including the plant pot soil and the field around the basin) with Baomi 0.50ml stone sulfur mixture. Plant regular medication control, can use 75% wettable chlorothalonil 500 times solution and 18% multi-fungus copper 150 times solution sprayed every 10 days, such as rain after spraying, but also timely spraying after rain, spraying time is 6 min-September regular medication to control the occurrence of black spot.