-
What are the symptoms of damage caused by the jujube bud weevil?
Damage symptoms of the jujube bud weevil
-
What is the occurrence pattern of the jujube bud weevil
The occurrence pattern of the jujube bud weevil
-
How to control mango weevil disease? Detailed explanation of control methods
1. The mango leaf-cutting weevil is widely distributed. Adults feed on young mango leaves, causing the leaves to dry up; or females lay eggs on young leaves and bite the young leaves off from the base, affecting plant growth. Control methods: ① During the growth period of young shoots, pick up the bitten-off fallen leaves from affected plants once every 3 days, dry them in the sun and burn them to kill the lar...
-
Identification and Control Methods of the Red Pine Pest Red Wood Borer Weevil
Why is the red wood borer weevil considered an important pest of young red pine trees? Because the larvae of the red wood borer weevil bore under the bark of red pine branches and shoots, causing the main shoot and side shoots to be damaged and die. This not only affects the growth of red pine, but can also cause the branches and trunk to crack and exude resin, weakening the tree's vigor and allowing other pests and diseases to invade and cause harm. Moreover, because this insect spends most of its life cycle under the bark of branches, it is difficult to control. Once it occurs in a forest, it may bring serious consequences of forest destruction. How to identify the red wood borer weevil? The adult of this insect is a small beetle, belonging to
-
Occurrence Patterns and Control Methods of the Rice Water Weevil
The rice water weevil is an internationally recognized agricultural plant quarantine pest. It first occurred in the Americas, and the countries in Asia where it occurs include Japan, South Korea, North Korea, and others. The place where the rice water weevil was first discovered in China was Tanghai County, Hebei Province, in 1987. The area where the rice water weevil was first discovered in our province was Ji'an City in the Tonghua region in August 1993. At present, this pest occurs to varying degrees in most areas of Heilongjiang Province. I. Degree of damage caused by the rice water weevil. The rice water weevil mainly damages rice, and also damages some
-
Occurrence Patterns and Control Methods of the Rice Water Weevil
The rice water weevil is an internationally recognized quarantine pest of agricultural plants. It first occurred in the Americas. In Asia, the countries where it occurs include Japan, South Korea, North Korea, and others. The place where the rice water weevil was first discovered in China was in 1987 in Tanghai County, Hebei Province. The area where the rice water weevil was first discovered in our province was in August 1993 in Ji'an City in the Tonghua region. At present, most areas of our province have this pest to varying degrees. I. Damage level of the rice water weevil. The rice water weevil mainly damages rice and also damages some grass
-
Identification and control methods of the licorice seed weevil
Morphological characteristics: The adult is oval, brown or dark brown, with a body length of 2.5-3mm and a width of 1.5-1.8mm; the antennae are broad and short, serrate, and do not reach the base of the elytra. The pronotum is covered with punctures and dense light brown hairs, and its posterior margin is as wide as the elytra. The elytra are covered with punctures and dense light brown hairs. The pygidium is long, slightly pointed at the tip, and the ventral surface is covered with dense light brown hairs. The inner margin of the hind femur has 1 small, indistinct tubercle near the tip; the inner margin of the hind tibia has 1 long tooth at the tip; the first segment of the hind tarsus is the longest. Damaged crop: licorice. Damage symptoms: main
-
How to control the jujube bud weevil? Understanding its life habits is key
The jujube bud weevil belongs to the order Coleoptera, family Curculionidae. It occurs in Henan, Hebei, Shanxi, Liaoning and other famous jujube-producing areas, mainly harming jujube, apple, pear and other fruit trees. The jujube bud weevil emerges from the soil in early spring and first damages the young buds of jujube trees. It is the earliest pest to appear on jujube trees. When the population density is high, it can eat all the jujube leaves, causing a second flush of buds and resulting in reduced yield or total crop failure. The adult is dark gray or earth-yellow, with a black head, two curved elytra that are 2 times as long as wide, and a silvery-gray ventral surface. The eggs are milky white, turning brown later, oblong,
-
What to Do When Rice Weevils Appear in Houseplants
What should I do with fresh flowers and plants at home? A flower owner taught me a little trick, and the bugs are dead. Hello everyone, welcome to Three Tricks, I'm the host of Zhengbian, sharing different life tips every day. Today, I'll talk with you. Now, as living standards improve, everyone has started growing flowers
-
The rice weevil slayer: "Dr. Rice Weevil" Yao Meiji has stuck with his research for 31 years, protecting granaries across Taiwan
He is the rice weevil slayer! "Dr. Rice Weevil" Yao Meiji's 31 years of dedication, using research to protect granaries across Taiwan
条件筛选