Apple Alternaria deciduous is an early defoliation disease with a short history and serious harm. The plant disease mainly damages the leaves and causes serious early defoliation, which in turn causes serious economic losses. Therefore, in the cultivation and management of apple orchards, how to strengthen the control of apple spotted leaf disease is one of the most important items. Since the occurrence of apple leaf spotted leaf disease is related to the spores of scattered spores in apple orchards, spore traps have been installed in many apple orchards in order to improve the control effect of apple spotted leaf disease and reduce disease losses in recent years. To collect disease spores can prevent apple deciduous disease in advance and improve the control effect of apple deciduous disease.
In general, there are three main methods for preventing and treating apple leaf spotted leaf disease. The first is strict quarantine. Try not to introduce seedlings and scion from the ward; second is to strictly clean the garden. In autumn and winter, the fallen leaves are carefully removed, the diseased branches are cut off, and the burning is concentrated. Before germination, spray 40% of Formamide arsenic wettable powder 100 times, eradicate the source of the disease; the third is prediction. The most common and effective way is to use spore traps for monitoring; the fourth is chemical control. Focus on the protection of early leaves, based on the defense.
Spore traps were used to monitor spores. Fixed spore traps were installed in the apple orchard. Mobile spore traps were also used for the detection. Vaseline was applied on glass slides to capture disease spores every 3 days. Change it one time and remove it under a microscope. On the fourth day of the spore peak, the size of the diseased millet grains can be seen; on the seventh day after the peak day, the first spot was found in the field, which should be controlled by drugs.
Because apples are for human consumption, spraying a large amount of chemicals can easily cause pesticide residues in agricultural products. Using spore traps for forecasting can help growers to grasp the best timing of medicine, control the amount of medicine, and achieve good results. Therefore, it can be said that the use of spore traps to do forecast work and carry out early prevention are small tricks for the control of apple spotted leaf disease, and it is also an effective way to prevent and control diseases. Therefore, in modern green plant protection work, spores The use of traps has become more and more widespread and more and more important.
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