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  • How to prevent rice sheath blight? Beware of high temperature and high humidity weather

    Sheath blight, also known as banded leaf blight, has a great impact on the growth and development of rice. It not only weakens the absorption capacity of the root system, but also affects the photosynthesis of leaves, resulting in an increase in empty and shriveled grains, a decrease in 1000-grain weight and a decline in yield. Therefore, attention should be paid to the prevention and control of sheath blight in production. The following introduces the main symptoms, occurrence characteristics and control methods of this disease for reference. Main symptoms When rice leaf sheaths are infected, small dark green water-soaked spots with blurred edges appear near the water surface, later expanding into oval or cloud-like shapes, with the center grayish green

  • Jiaobai (wild rice stem) is prone to Helminthosporium leaf spot disease under high-temperature and high-humidity weather

    Jiaobai Helminthosporium leaf spot is a fungal disease. In recent years, as the jiaobai planting area has continued to increase, the scope of occurrence of this disease has gradually expanded, and the severity has become increasingly worse. This disease can occur throughout the entire growth period of jiaobai. It mainly damages the leaves. In the early stage, small yellow-brown spots appear on the leaves, which later expand into brown spots the size of sesame seeds, with a few forming...

  • What is the relationship between wheat Fusarium head blight and humidity?

    What effect does humidity have on wheat Fusarium head blight? Please give an introduction. The effect of humidity on the occurrence of wheat Fusarium head blight is greater than the effect of temperature. Long periods of continuous high humidity are the primary condition for disease onset. Perithecia can only be produced when the soil surface is wet. According to observations, when the relative humidity at the soil surface reaches above 80%, perithecia...

  • How to prevent and control cotton boll rot? Do this in hot and humid weather

    How to prevent and control cotton boll rot in hot and humid conditions? Please explain the methods. Cotton boll rot can be prevented and controlled by referring to the following methods: 1. Rational fertilization: apply more organic fertilizer and phosphorus-potassium fertilizer, apply nitrogen fertilizer in appropriate amounts, prevent excessive vegetative growth of cotton plants, reduce canopy closure in the cotton field, and improve ventilation and light penetration. 2. Timely drainage: for low-lying...