A biological pesticide for controlling leaf blight of macadamia nut

Abstract

The invention belongs to the technical field of pesticides, in particular to a biological pesticide for preventing and treating macadamia leaf blight. A biopesticide for preventing and treating macadamia leaf blight, the active ingredient of which is a binary compound of chrysophanol and pyraclostrobin or flufenapyramide. When the two active ingredients of the biopesticide of the present invention are compounded, they show a synergistic effect. Compared with a single agent, it can improve the control effect on macadamia leaf blight, reduce the amount of pesticide application, and reduce the cost of control; and Compared with a single drug, it can effectively delay the emergence of drug resistance. In addition, the biopesticide of the present invention has the characteristics of low toxicity, low residue and low pollution, belongs to a new type of biopesticide, and has preventive and therapeutic effects on macadamia leaf blight.

Description

technical field [0001] The invention belongs to the technical field of pesticides, in particular to a biological pesticide for preventing and treating macadamia leaf blight. Background technique [0002] Macadamia nut, also known as macadamia nut, is a dicotyledonous evergreen tree. In the process of planting macadamia nuts, they are often attacked by various diseases and insect pests. The main diseases and insect pests are spider mites, aphids, tung moth, dry rot, anthracnose and leaf blight. Among them, leaf blight mostly occurs from leaf edge and leaf tip infection, and the lesions are irregular, reddish brown to taupe, and the lesions are contiguous to form large withered spots. There are many pathogenic bacteria that cause leaf blight, among which Microsporum Pestalotiopsis microspora is a common pathogen of macadamia leaf blight. [0003] In the process of agricultural production, chemical agents have the advantages of fast action and high efficacy, which can effecti...

AI Technical Summary

Problems solved by technology

But at the same time, chemical agents also have the disadvantages of easily causing resistance to pests and diseases, environmental pollution, and pesticide residues. In addition, the existing macadamia leaf blight has produced varying degrees of resistance to existing chemical agents. Therefore, it is necessary to develop and develop new Chemicals are of great significance in the control of macadamia leaf blight

At present, there are no relevant reports on the compounding of chrysophanol and pyraclostrobin or flufenapyramide