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What Are the Patterns of Estrus in Female Foxes? A Detailed Explanation
During the resting period, the vulva of a female fox is covered by pubic hair, making it hard to detect; during estrus, the pubic hair parts only because the vulva becomes swollen. The estrus period of female foxes is short, mating is relatively difficult, and the optimal timing for mating is also hard to determine; in particular, silver-black foxes have a relatively high rate of failed conception. To improve the reproduction rate, it is necessary to understand the estrus patterns of female foxes and mate or perform artificial insemination at the right time. The estrus period of female foxes can be divided into three stages: Stage one: the vulva begins to swell, the clitoris enlarges, and the female begins to show signs of attraction to males and sexual excitement; this generally lasts
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Detailed Explanation of the Occurrence Patterns and Control Techniques of the Jujube Leafroller
The jujube leafroller belongs to the family Tortricidae, order Lepidoptera. The jujube leafroller damages the leaves, flowers, and fruits of jujube trees, seriously affecting the yield and quality of jujube. The jujube leafroller has a single feeding habit, only damaging jujube trees and wild sour jujube, with larvae feeding on jujube leaves, flowers, and fruits. It produces 3 generations per year, overwintering as pupae in cocoons under old cracked bark and in clods of soil around the trunk. In the following year, eclosion begins in late March, with the peak of eclosion in early April; adults are strongly phototactic, and eggs are laid singly on smooth twigs and leaves. The first-generation larvae hatch in early May (before the Beginning of Summer)
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A Detailed Explanation of the Occurrence Patterns and Control Methods of the Ginger Stem Borer
The ginger stem borer (also known as the corn borer, belonging to Lepidoptera, Pyralidae) is a major pest harming ginger. It has a very mixed diet; when causing damage, the larvae bite and feed on the tender stems, then bore into the stem (with frass and insect droppings accumulating at the entry hole), blocking the transport of water and nutrients, causing the stems and leaves above the bore hole to turn yellow and wilt, and they break very easily under external force. 1. Occurrence patterns. The ginger stem borer generally occurs 3-4 generations per year in our area, and the concentrated damage period coincides exactly with the vigorous growth period of the ginger plants. The larvae move from plant to plant causing damage, and finally the mature larvae
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Occurrence Patterns and Control Methods of Jujube Witches' Broom
Jujube witches' broom is a devastating disease that should be prevented rather than cured. It is very prevalent in jujube-producing regions of China. Once a tree is infected, it rarely bears fruit the following year, and even if it does, the fruit loses its edible value; after 3~4 years the entire tree dies. I. Causes of jujube witches' broom: The main cause of jujube witches' broom is the invasion of mycoplasma-like organisms. Mycoplasma-like organisms can be spread through grafting. Under natural conditions, natural root grafting between trees can also spread the disease, and some leafhoppers are also carriers of mycoplasma-like organisms. II. Integrated control measures: 1. Select and breed disease-resistant
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Occurrence Patterns and Control Methods of Jujube Fruit Shrink Disease
I. Symptoms and Damage Jujube fruit shrink disease, also known as jujube fruit wilt disease, jujube fog wilt disease, etc., is one of the major diseases in all major jujube-growing regions of China. In jujube fruits affected by fruit shrink disease, yellow-brown irregular discolored spots first appear on the fruit shoulder or body, then the fruit skin becomes water-soaked and earthy yellow with indistinct edges, and later the fruit skin turns dark red, shrinks, and loses its luster. In the diseased area of the flesh, brown spots and earthy yellow softness appear from the outside inward. Diseased fruits taste bitter. The fruit stalk turns brown or dark brown. The entire diseased fruit is shrunken and small, and falls off before maturity.
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Occurrence patterns and control methods of black locust canker disease
Black locust canker disease is a major trunk and branch disease of black locust (Robinia pseudoacacia), affecting both young and mature trees. The disease mostly occurs in the bark of the main trunk. After trees are affected, lesions of varying sizes mostly appear on the lower part of the main trunk and at branch forks, and the lesions are spindle-shaped, oval or irregular. On young trees, the diseased part of the main trunk is cankerous and slightly sunken; on large trees, the bark of the main trunk is thick, and the diseased part is water-soaked with no obvious sunken areas. The disease spreads faster lengthwise than crosswise. When the diseased area encircles the trunk completely, the tree withers and dies. In the later stage, at the lenticels and bark cracks of the diseased part
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How to control broad mites in greenhouses and sheds? Understanding the occurrence pattern is key
In greenhouse fruit and vegetable production, curled and shrunken growing points of plants, deformed and cracked fruits are often seen, causing serious losses to production. Because the temperature and humidity inside the greenhouse are very suitable for the growth and reproduction of broad mites, and fruit vegetables are their main targets, and the mites are extremely small and invisible to people, timely control is impossible. Therefore, in recent years, the area of occurrence and damage has been growing larger and larger, which should attract great attention from producers. Broad mites belong to the class Arachnida, order Acariformes, family Tarsonemidae, and are harmful microscopic pests. They mainly damage cucumbers, eggplants, and tomatoes among greenhouse vegetables.
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A Detailed Explanation of the Occurrence Patterns and Control Methods of the Ginger Borer
The ginger borer (also known as the corn borer, belonging to the Lepidoptera order and the Pyralidae family) is a major pest harming ginger. It has a very diverse diet; when causing damage, its larvae bite and feed on tender stems, then bore into the stalk (with frass and insect droppings accumulating at the entry hole), obstructing the transport of water and nutrients, causing the stems and leaves above the bore hole to turn yellow and wilt, and to break very easily under external force. 1. Occurrence patterns. The ginger borer generally produces 3-4 generations per year in our area, and its concentrated damage period coincides exactly with the vigorous growth period of ginger plants. Larvae move between plants to cause damage
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Occurrence Patterns and Control Methods of the Beet Armyworm Pest
Occurrence Patterns and Control Methods of the Beet Armyworm Pest
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Occurrence Patterns and Control Methods of Kiwifruit Gray Mold
Kiwifruit gray mold mainly occurs during the flowering stage, young fruit stage and storage period of kiwifruit. In severe years, the incidence rate in orchards and during storage can reach more than 50%. Kiwifruit gray mold has become one of the main diseases affecting the healthy development of the kiwifruit industry. 1. Symptoms When young fruit (late May to early June) is affected, residual stamens and petals are densely covered with gray spores. At the initial stage, the fuzz on young fruit turns brown, the skin is infected, and in severe cases it can cause fruit drop. Contaminated stamens and petals attach to leaves and form concentric ring lesions centered on them; the lesions expand and leaves drop. If rain occurs, the disease develops more severely. After fruit is affected, gray-brown mycelium and spores form on the surface, followed by black sclerotia. During storage, fruit is easily infected by diseased fruit.
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