Seed coating agent for preventing and treating head smut disease in maize

Abstract

The invention discloses a seed coating agent for prevention and cure of maize head smut, wherein the method for using comprises coating the maize seeds before sowing, the agent-seed ratio being 1:50, the coating agent comprises 2.2% by weight ratio of diniconazole, 12.8% of thiram, 2125ppm-212.5ppm of gibberellin, and the rest for film-forming agent and water.

Description

technical field [0001] The invention relates to a plant growth regulator, in particular to a seed coating agent for preventing and treating corn head smut. Background technique [0002] In recent years, due to the continuous cropping of corn for many years in the spring corn area of ​​Northeast China, the blind introduction of some late-maturing high-susceptibility varieties has increased the accumulation of pathogenic bacteria in the soil, abnormal changes in climatic conditions and farmers' lack of common sense of scientific use of seed coating agents, resulting in corn The occurrence of head smut increases year by year, causing great losses to farmers. Take the large outbreak of corn head smut in the northeast spring corn area in 2002 as an example, with an area of ​​nearly 16 million mu. Among them, the affected area in Heilongjiang Province is 6.6 million mu, accounting for 20% of the province's corn area. The main varieties are Longdan 19 and Baidan 31, and the incid...

AI Technical Summary

Problems solved by technology

Yield loss due to corn head smut at 15%

[0003] The most effective way to prevent and treat corn head smut is to use seed coating agent, the method of use is mostly seed coating before sowing, the ratio of drug to seed is 1:50, and the most effective seed coating agent used is 15% smut net seed Coating agent, its active ingredients are diniconazole and thiram, the control effect is 96-100%, but its disadvantages are that it is easy to cause phytotoxicity to corn seedlings in case of low temperature, the growth of underground stems is inhibited, and the arch of seed buds does not emerge, bending , and unfold the cotyledon underground, the general lack of seedling rate is 20-39%, and the serious one is as high as 40-70%, and even the seedlings are destroyed.