Novel method for preventing and controlling black blight type epidemic disease of mulberry

Abstract

The invention discloses a control method of epidemic disease of leaf blight and fruit rot of mulberry leaf. The technical proposal of the method is that ciprofloxacin is mixed with water to have a concentration of 90 -110mg / kg, and, in early stage of disease incidence when the symptom is just shown, the mixed ciprofloxacin is sprayed onto the mulberry leaves by a dosage of 45-55kg per 667 square meter (1mu) after sick bud leaves are picked off, and the mulberry leaves can be used for feeding silkworm on the day the method is applied. Another technical proposal of the invention is that enrofloxacin hemihydrate is mixed with water to have a concentration of 90-110mg / kg, and, in early stage of disease incidence when the symptom is shown, the mixture is sprayed onto the mulberry leaves by a dosage of 45-55kg per 667 square meter (1mu) after sick bud leaves are picked off, and the mulberry leaves can be used for feeding silkworm on the day the method is applied. The invention has simple preparing method, wide raw material sources, low cost, innocuity, no-residue and no pollution, and can be used conveniently by directly being sprayed onto the mulberry leaves; besides, the sprayed mulberry leaves can be picked off for feeding silkworm. Tests indicate that the method has control efficiency of 90 percent, and can control damage effectively when applied to mulberry fields covering an area of 100 hectare.

Description

technical field [0001] The patent of the present invention relates to a new control method for black blight of mulberry trees, especially a kind of mulberry variety that is suitable for current production and is being promoted with good leaf quality and high yield but poor disease resistance, such as " Yu 71-1", "792" the prevention and control methods of mulberry black blight in these mulberry gardens. Background technique [0002] In recent years, mulberry black blight has caused serious damage to all major sericulture areas in the country. In particular, the key towns of sericulture in Yancheng City, Jiangsu Province, Teyong Town, Sheyang County, and Fu'an Town, Dongtai City showed a trend of outbreaks. Severely damaged fields lose 30-70% of their yield. The traditional control method is to use 100mg / kg concentration of "agricultural streptomycin" to spray in the mulberry field at the early stage of the disease, but this method can no longer effectively control the dama...

AI Technical Summary

Problems solved by technology

The traditional control method is to use 100mg / kg concentration of "agricultural streptomycin" to spray in the mulberry field at the early stage of the disease, but this method has been unable to effectively control the damage