Survey and Green Control of Apple Root Rot Disease
Root rot is a destructive diseases affecting apple trees.At present,it is mainly controlled by a com-bination of chemical agents,which leads to the pollution of soil and water sources and a reduction in disease resist-ance of apple trees.The aim of this study was to explore a new way for biologically controlling apple root rot by u-sing biological control agents such as Trichoderma harzianum in lieu o traditional chemical agents.The results showed that when applying a dosage of 200 million/g Trichoderma Harzianum+35 billion/g bacillus amylolique-faciens+500 million/g Bacillus subtilis+52％potassium fulvic acid+35 g/L poly-glutamic acid,through two rounds of root irrigation treatment,there was a rapid inhibition and elimination of harmful soil bacteria.This signif-icantly reduced the impact of root rot and led to improved apple tree vigor,yield,quality,and overall orchard ben-efits.
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