How is Trichogramma used to control corn pests and diseases?
What is Trichogramma? How does Trichogramma control corn pests and diseases? A netizen asked for an introduction, so Zhongdiwang compiled information on Trichogramma and methods for using Trichogramma to control corn pests and diseases, listed below for netizens' reference. Introduction to Trichogramma: Trichogramma is a type of parasitic natural enemy in nature...
What is Trichogramma? How does Trichogramma control corn pests and diseases? Is there a netizen who can help introduceZhongdiwang has compiled information on Trichogramma and methods for using Trichogramma to control corn pests and diseases, listed below for netizens' reference.
Introduction to Trichogramma:
Trichogramma is a type of parasitic natural enemy in nature. Among natural enemy species, it is the smallest, with a body length of only 0.5 mm. Because its compound eyes are red, it is called Trichogramma. There are many species of Trichogramma in nature. Common ones include Trichogramma ostriniae, Trichogramma dendrolimi, Trichogramma chilonis, Trichogramma confusum, Trichogramma evanescens, Trichogramma japonicum, and more than twenty others. Some species achieve a pest control rate of more than 10% in nature.
Trichogramma can kill about 70%-90% of corn pests and can reduce the stem-boring rate of corn pests by more than 30%. During the corn ear stage, it can also control the occurrence of corn ear rot caused by insect damage and reduce yield losses. At the same time, it can also save farmers the labor and expense of spraying pesticides, and can improve grain quality, shift grain production toward green, pollution-free practices, form a virtuous biological chain cycle, and lay the foundation for maintaining agricultural ecological balance and sustainable agricultural development.
Pests that Trichogramma can control:
Trichogramma can kill many lepidopteran pests such as the Asian corn borer, cotton bollworm, cabbage moth, and imported cabbageworm, and can be widely used on crops such as corn, cotton, fruit trees, and vegetables.
Operating methods for using Trichogramma to control corn pests and diseases:
A total of 15,000 Trichogramma are released per mu of corn, with 7,000 released the first time and 8,000 released the second time. One release point is set per mu. Starting from the edge ridge of the release field, the 20th ridge is the first release ridge. Walk 20 steps inward along the first release ridge to reach the first release point, then walk forward 40 steps along the ridge to reach the second release point, and so on to the end of the field. Then, from the first release ridge, skip downward 40 ridges to reach the second release ridge, and continue by the same method.
Generally, release is done in the morning. At the release point, choose a leaf in the middle part of a corn plant, tear half of the middle of the leaf open, roll it downward into a tube shape, and then pin (sew) it inside the tube with sorghum stalk skin or a needle and thread.
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