Common diseases and insect pests of water chestnut and their control

Water chestnut is a kind of annual fruit belonging to the genus Trapa, also known as waist water chestnut. The fruit of water chestnut is crisp and delicious, which can be used to cook porridge. Water chestnut contains rich protein, trace elements of a variety of nutrients, has a thirst detoxification and other effects. It is a relatively hot planting project now. There are also many people planting in large areas, but in the process of planting will find that water chestnut often occurs a lot of pests, and do not know how to prevent and control. Therefore, Xiaobian brought you common pests and diseases of water chestnut and prevention methods.

1, water chestnut white silk disease

Pathogenesis characteristics: water chestnut white silk disease is a fungal disease, the main pathogen is small sclerotium, generally in summer and autumn sultry high humidity environment high incidence. Water pollution is more likely to occur, mainly for the leaves of good water chestnut, a small number of yellow disease spots will appear in the middle of the leaves at the beginning, and will gradually expand and extend in the later stage, causing the whole infected leaves to turn yellow and rot, and begin to spread to the surrounding leaves. Cause the rot of the whole diamond disk, serious disease will cause a large area of diamond disk rot within 3 days, resulting in production failure.

Prevention and control methods: When planting water chestnut, pay attention to planting density, prevent the growth space of water chestnut plate from being too small in summer and autumn, keep the water quality clean and hygienic, and prevent pollution. The diseased rhombus disk or rhombus leaf should be removed in time, centralized treatment and destruction, and the rest of the rhombus disk in the field should be sprayed with thiophane methyl and other chemicals for control.

2, water chestnut brown spot disease

Pathogenesis characteristics: brown spot disease is also a fungal disease, occurs in all parts of China, but also generally occurs in summer and autumn, will cause early defoliation of water chestnut leaves, resulting in reduced yield and quality. In the early stages of the disease, there are faint pale brown spots on the edges of the leaves, which gradually extend into irregular dark brown spots. When the environment is wet and humid, small black mold spots will appear.

Prevention and control methods: When planting water chestnut, pay attention to planting density, prevent the growth space of water chestnut plate from being too small in summer and autumn, keep the water quality clean and hygienic, and prevent pollution. The main control methods are similar to the control methods of white silk disease, mainly paying attention to the water quality of the field, as well as the sanitary conditions, etc., and comprehensively disinfecting the field in winter to reduce the winter pathogen.

3, water chestnut flower insect

Disease characteristics: water chestnut golden flower insect is can produce destructive disaster to water chestnut also from, generally occurs in early summer, golden flower insect reproduction speed is extremely fast. The fastest can be two days a generation, in summer and autumn season is the high incidence period, golden flower insect adults and larvae will nibble water chestnut mesophyll, a few hours can eat up the whole water chestnut plate.

Control methods: The only way to prevent and control golden flower insects is to spray pesticides to carry out appropriate control. Generally, pesticides such as monosultap or bisultap can be used to spray and kill them.

The above three kinds are a brief introduction to the diseases and insect pests that often occur when planting water chestnut. When planting water chestnut, we must pay attention to the living environment of water chestnut, because water chestnut lives in water, so we must pay attention to the quality of water. Do not use contaminated water to plant water chestnut, and everyone should pay special attention to this pest, this pest is not timely control, even can let you die. This article is for reference only. I hope it helps.