Composition for preventing and controlling sugarcane smut and preparation method thereof

Abstract

According to the composition for preventing and controlling sugarcane smut and the preparation method of the composition, the pesticide is composed of 75% trifloxystrobin tebuconazole water dispersible granules, 42.4% pyraclostrobin suspending agent, 325 g / L benzyl azoxystrobin suspending agent and 250 g / L pyraclostrobin emulsifiable concentrate, sugarcane smut germs latent in sugarcane buds, sugarcane seed skins, sugarcane seed cuts and sugarcane seeds can be effectively killed, and the sterilization effect is good; the composition and proportion of the first penetrant are optimized, and the pesticide is assisted to permeate into sugarcane seed cuts and sugarcane seeds at the temperature of 25 DEG C or above, so that sugarcane smut germs deposited in the sugarcane seeds are killed, the usage amount of the pesticide is reduced, and the pesticide cost is reduced. Sugarcane smut germs contained inside and outside sugarcane seeds can be killed at the same time without the combination of medicine sterilization and high-temperature treatment at about 50 DEG C, and the operation difficulty is lower; the second penetrating agent is composed of stigmasterol, Tween 60 and palmitic acid and used for assisting the agent to penetrate into sugarcane seeds at the temperature of 12 DEG C or above, and the using effect is better.

Description

Technical field [0001] The present invention relates to the technical field of preventing and controlling sugarcane smut, and specifically relates to a composition for preventing and controlling sugarcane smut and a preparation method thereof. Background technique [0002] Sugarcane smut is also called sugarcane whip smut and smut. The most obvious characteristic of the disease is a black whip-like object that curls downward on the tip of the diseased sugarcane, ranging from a few centimeters to tens of centimeters in length. The center of the whip is a core column composed of parenchyma or vascular tissue, and the periphery is surrounded by a layer of chlamydospores. In the early stages of formation, the diseased whip is covered with a silvery-white film, which later breaks and releases a large amount of black powder, and finally only the core remains. Infected sugarcane varieties germinate early, have small stems, slender leaves, light green, more tillers, and black spik...

AI Technical Summary

Problems solved by technology

[0004] At present, the problems in the control methods of sugarcane smut are: 1) mainly kill the sugarcane smut pathogen on the outer surface of the sugarcane seed, which cannot be killed The sugarcane smut pathogen existing in sugarcane seeds; 2) Only the combination of drug sterilization and high temperature treatment at about 50°C can simultaneously kill the sugarcane smut pathogen contained inside and outside the sugarcane seeds. Due to limited conditions, many sugarcane farmers cannot use High temperature treatment of sugarcane seeds has poor control effect on sugarcane smut pathogen

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