-
Control Methods for the Dark Black Chafer in Peanut Fields
The dark black chafer is the dominant population harming peanuts in the Xinyi area, and its larvae (white grubs) not only severely damage peanut pods, but also feed on crop roots in soybean, corn, sweet potato, Chinese medicinal herb, flower and nursery stock fields. In production, corresponding measures should be taken during the adult and larval stages according to the occurrence
-
How to prevent and control chafer grub damage in potted flowers
What to do when potted flowers are harmed by chafer grubs
-
Occurrence and Control Methods of the Black Velvet Chafer in Fengxiang County, Shaanxi
The black velvet chafer (commonly known as "louhu") has a body length of 7-8 mm, a blackish-brown or purplish-brown body color, and blackish-brown fine hairs on its body surface. It has one generation per year and overwinters as an adult. In April of the following year, it emerges and becomes active, then feeds on the leaves of weeds, poplar, willow, and elm trees. After crop seedlings emerge, it migrates to sunflowers, beans, and other crops to feed and cause damage. During the day, it hides in weeds and soil cracks. It mostly flies out in groups in the evening to cause damage, biting the tender leaves of willow, elm, and fruit trees, as well as the seedlings of crops such as alfalfa, sunflower, sweet potato, potato, and kidney bean. Adults have a death-feigning habit and phototaxis. From May to
-
Occurrence Patterns and Control Methods of the White-Spotted Flower Chafer
The white-spotted flower chafer belongs to the order Coleoptera, family Cetoniidae, and is also known as the white-striped copper flower chafer, white-spotted flower chafer, white-spotted golden chafer, and copper chafer. It is distributed in Northeast China, North China, and the Huang-Huai-Hai region. When the white-spotted flower chafer damages crops, the market quality is greatly reduced in mild cases, and completely lost in severe cases, bringing relatively serious economic losses to growers. Hosts Currently, the hosts of the white-spotted flower chafer include corn, sunflower, tomato, watermelon, peach, grape, plum, strawberry, hop, the large composite weed bull thistle, willow, and elm. Damage characteristics The
-
What are the control methods for the white-spotted flower chafer?
The white-spotted flower chafer sporadically mainly damages corn, grapes, tomatoes and apples. I. Morphological characteristics and living habits of the white-spotted flower chafer. The adult is 17-24 mm long and 9-12 mm wide, oval-shaped, with a bronze luster, and its body surface is scattered with numerous irregular white downy spots. Only 1 generation occurs each year. It overwinters as larvae in soil or in compost made from rotted straw. It starts activity in March of the following year. In late April and early to mid-May it damages corn seeds and seedlings, adults appear in May, and June-August is the peak occurrence period. Adult white
-
How to control the cupreous chafer? Master its occurrence patterns and key control points
The cupreous chafer beetle belongs to the order Coleoptera, family Scarabaeidae. It occurs in many apple orchards in our region, and its hosts include apple, hawthorn, crabapple, pear, apricot, peach, plum, Japanese apricot, persimmon, walnut, strawberry, and so on. I. Damage symptoms: Apple trees suffer the most severe damage from the cupreous chafer beetle; the adults feed on leaves, often causing large areas of young fruit trees to have incomplete leaves, and even entire trees stripped of all leaves. II. Occurrence patterns: (I) The cupreous chafer beetle has 1 generation per year, overwintering as mature
-
What kind of pest is the Northeast giant black chafer?
〔Pest scientific name〕Holotrichia diomphalia Bates〔Damaged crops〕It damages sugar beets and various vegetables, and also damages legume and grass-family crops.〔Pest identification〕The larvae cause damage by biting through the roots and stems of vegetable seedlings, causing the whole plant to wither and die, resulting in missing plants and broken rows; they also gnaw on root tubers and stem tubers, affecting quality. The adults feed on crop leaves, especially preferring crops such as soybean and peanut, leaving holes or notches. The Northeast giant black chafer belongs to Coleoptera, Scarabaeidae.
-
Identification and Control Methods of the Copper-Green Chafer
The copper-green chafer (Anomala corpulenta Motschulsky) belongs to the order Coleoptera, family Scarabaeidae. It occurs in all regions. It damages cruciferous crops, solanaceous crops, cucurbits, legumes and other crops. [Field identification] The larvae damage the roots and stems of seedlings, causing missing plants and broken rows, and often occur mixed with the larvae of the Northeast black chafer. Adults prefer to feed on the leaves of fruit trees, forest trees and other crops. The adult body is about 20 mm long. The head, pronotum, scutellum and elytra are copper-green with a metallic sheen,
-
A Detailed Guide to the Identification and Control Techniques of the Black Velvet Chafer
The black velvet chafer is commonly known as the "blind bumper" or "big velvet mandarin jacket." It mainly damages soybean seedlings in its adult form (the chafer), biting the growing points or severing young stems. When outbreaks are severe, it can eat the seedlings bare, causing missing plants and broken rows, or even ruining the field. This insect has one generation per year, overwintering as adults in the soil, and occurs more often in fields following soybeans. From late April to early May, it first feeds on weeds; after soybean seedlings emerge, it bites the soybean seedlings. At night this insect hides in the soil and comes out during the day to cause damage. It feeds most heavily from 3-5 pm, and the number of insects is greatest on windless, warm days. Control methods: 2.5
-
Identification and control methods for the copper-green chafer
[Control methods] (1) Controlling adults The adults of the above several species of chafers all have the habit of supplementary feeding, mainly feeding on the leaves of trees, fruit trees, legumes and other crops. On young fruit trees, manual control can be used to capture adults to reduce damage. (2) Chemical control 2.5% trichlorfon powder can be used, broadcast at 30 kg per hectare on field crops. 40% dimethoate or omethoate emulsifiable concentrate at 1000 times dilution, or 20% fenvalerate 300
条件筛选