What Is Peanut Web Blotch? A Detailed Guide to Peanut Cultivation Techniques
What is peanut web blotch? How do you prevent and control peanut web blotch? We ask fellow gardeners to help explain. Zhongdi Web has compiled the damage caused by peanut web blotch and its prevention and control methods, listed below for fellow gardeners' reference. The damage caused by peanut web blotch: peanut web blotch, also known as brown streak disease and cloud-pattern blotch disease, often occurs mixed with leaf spot disease...
What is peanut web blotch?How do you prevent and control peanut web blotch? We ask fellow gardeners to help explainZhongdi Web has compiled the damage caused by peanut web blotch and its prevention and control methods, listed below for fellow gardeners' reference.
The damage caused by peanut web blotch:
Peanut web blotch, also known as brown streak disease and cloud-pattern blotch disease, often occurs mixed with leaf spot disease, and can cause early defoliation of peanut leaves, seriously affecting peanut yield.
Web blotch usually strikes at the flowering stage, with the peak period of infection from the pod-setting stage to the maturity stage. It mainly damages the leaves. Initially, round or irregular dark brown small spots appear along the main vein, with a chlorotic halo around the spots. Later, irregular brown spots with a net-like edge appear on the upper surface of the leaves, and small millet-brown dots are visible in the diseased areas. During continuous rainy weather, the leaf spots are larger, nearly round and dark brown, while the spots on the underside of the leaves are less obvious and light brown; in severe cases the spots merge. Under dry conditions the spots tend to crack and perforate. Once the leaves are infected, they drop off very easily.
Prevention and control methods for peanut web blotch:
Method one:Apply more decomposed organic fertilizer and phosphorus and potassium fertilizer to the peanuts, water reasonably, cultivate the soil in time to improve the plants' disease resistance, and promptly remove diseased plant debris after harvest.
Method two:In the early stage of the disease, spray with 70% mancozeb wettable powder at 500-600 times dilution, or 75% chlorothalonil wettable powder at 700-800 times dilution, or 64% sandofan wettable powder at 500 times dilution for control, spraying once every 7-10 days, for 2-3 consecutive sprays.
Click to get more peanut cultivation techniques
Click to get more grain crop cultivation techniques