Plant-immunity resistance inducer and application thereof

Abstract

The invention provides a plant-immunity resistance inducer and application thereof. The active ingredients of the plant-immunity resistance inducer contain 2-amino-3,5-dichlorobenzoic acid, prinzone and chitosan. In this way, after the plant-immunity resistance inducer is used in harvested citrus, occurrence of harvested citrus immune penicilliosis can be induced, the damage effect of the penicilliosis on the quality of the harvested citrus can be effectively inhibited, and the preservative and fresh-keeping time of the harvested citrus can be prolonged. The plant-immunity resistance inducer is free of toxicity and pollution, capable of directly acting on the harvested citrus, and no pesticide residues are generated; the plant-immunity resistance inducer can effectively prevent anthracnoseof harvested mangoes.

Description

technical field [0001] The invention relates to the technical field of biological pesticides, in particular to a plant immune inducer and its application. Background technique [0002] Citrus penicillium is the most harmful and frequently occurring disease of postharvest citrus during storage and transportation. Its pathogen is Penicillium italicum Wehmer; Fungiaceae, Penicillium. The disease invades citrus fruits through wounds, or is infected through contact with sick and healthy fruits, resulting in a large number of rotten fruits. The disease is highly contagious and occurs frequently all over the world. Every year, about 20% of citrus are infected with penicillium and bring huge losses to fruit production bases and sales enterprises. [0003] In order to suppress the huge destructive power of citrus penicillium, people use chemical pesticides with the principle of bactericidal action, such as carbendazim, thiophanate-methyl, thiabendazole, benzoyl and other benzimidaz...

AI Technical Summary

Problems solved by technology

The disease is highly contagious and occurs frequently all over the world. Every year, about 20% of citrus are infected with penicillium, which brings huge losses to fruit production bases and sales enterprises.

[0003] In order to suppress the huge destructive power of citrus penicillium, people use chemical pesticides with the principle of bactericidal action, such as carbendazim, thiophanate-methyl, thiabendazole, benzoyl and other benzimidazole chemicals and promethazine amines, imazoles and other imidazoles, the long-term use of these pesticides in large quantities will affect human health and endanger the environment, and also enhance the drug resistance of penicillium

More importantly, these pesticides cannot be used in large quantities as preservatives for post-harvest citrus, because it is difficult to wash and remove them by effective means after spraying on citrus, resulting in too much pesticide residue in citrus

Moreover, the country has recently imposed strict restrictions on the use and residue of chemical preservatives (National Food Safety Standard Maximum Residue Limits of Pesticides in Food, GB 2763-2016), which has reduced the use of such bactericidal preservatives, but at the same time Intensified outbreak of postharvest citrus penicillium

However, if you use commonly used physical methods, such as low-temperature refrigeration and heat treatment methods, you need to consume a lot of energy and equipment, and transportation is inconvenient. Modified atmosphere preservation and packaging preservation require a special consumption of CO2. 2 and packaging materials, greatly increasing the production and marketing costs of citrus

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