To understand the cause and prevention of jujube rust
Jujube rust is the key disease injuring the growth of jujube. The disease only damages the leaves. How to prevent and cure the disease correctly? Ma Zhifeng, the fruit expert of Yangling Vocational and Technical College, has given advice to many farmers. Incidence conditions and time Ma Zhifeng stated that jujube rust is prone to disease when there is much rain and high humidity. In July, the summer spores germinated and invaded from the stomata in the leaves. Symptoms appeared about 10 days later, and there were fallen leaves. In the middle and late August, the leaves fell off in large numbers. From late August to early September, a large number of spores emerged in the summer. They spread through wind and rain and caused continuous re-infestation, which made the disease worse. The onset and severity of the onset of illness have a significant relationship with the rainfall, temperature, and humidity of the year. The rust of jujube rust which is often closed and low lying on the surface is prone to rust. The fallen leaves and fruit drop are serious. Intercropping high crops under the trees, poor ventilation and light transmission, early onset and heavy. The onset begins with the lower part of the canopy and the middle, and gradually expands towards the top. Control methods 1 Timely drainage during the rainy season to prevent the orchard from getting too wet. Between 2 rows, do not plant vegetables and other water-filled crops. 3 After defoliation, clean the fallen leaves in the jujube garden before germination, concentrate burned or buried deeply, and eliminate the source of initial infection. 4 Before spore germination, spray 80% mancozeb WP 800 to 1000 times. At the peak of rust, spray 12.5% ​​diniconazole WP 3000 times solution or 20% difenoconazole water dispersible granules 5000 to 6000 times. Polarizing Microscope ,Polarized Light Microscopy,Polarized Optical Microscopy,Polarised Light Microscopy Ningbo ProWay Optics & Electronics Co., Ltd. , https://www.proway-microtech.com