Field Chemical Control Experiment of Apple Valsa Canker in Yanqing District
In recent years,apple tree valsa canker has been raging in Yanqing,which has seriously affected the healthy development of apple industry in Yanqing.In order to select the ideal control agents,six combinations of agents were selected to carry out field control experiments.The results showed that 1.26%octylamine acetate water 500 mL+25%propiconazole 100 mL diluted 5 times after mixing+artificial tree bark and 30%humic acid·copper water 400 g+43%pentazolol suspension 20 g had significant inhibition effects on the apple pathogen of valsa canker.After 4 months of application,the control effect was 84.48%and 82.76%,respectively.The recurrence rates were 15%and 16.67%,respectively.In order to save cost,it is recommended that 1.26%octanobacterium acetate water solution 500 mL+25%proiconazole 100 mL diluted 5 times after mixing for the treatment of large wounds,30%humic acid·copper water 400 g+43%pentazolol 20 g for the treatment of small wounds.
Yanqing Districtapple valsa cankerchemical control
万方数据
维普
