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Symptom Identification and Control Methods of Walnut Bacterial Blight
1. Distribution and Occurrence Characteristics Widely distributed in walnut-producing areas such as Hebei, Shandong, Shanxi, Liaoning, Henan, Jiangsu, Zhejiang, Sichuan, Yunnan, Shanxi, and Gansu, with severe incidence in some areas. Infection generally begins in mid-to-late May. The pathogenic bacteria overwinter in the lesions of diseased branch tips or in diseased buds. In the spring of the following year, the bacteria spread by wind and rain splashing onto leaves, fruits, and young branches, causing damage. The pathogen can infect floral organs, so pollen can also carry the bacteria, and insects are also vectors. The bacteria invade through stomata, lenticels, nectaries, and various wounds. Under conditions of sufficient humidity, temperatures within the range of 4-30°C can cause infection of leaves, and 5-27°C can cause infection of fruits. The incubation period varies in different parts: 5-34 days on fruits and 8-18 days on leaves.
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Symptom Identification and Control Methods of Walnut Rot Disease
1. Distribution and occurrence characteristics. Also known as black water disease, it occurs in Henan, Shanxi, Shandong, Sichuan and other places. The pathogen overwinters in the diseased parts as mycelium or stroma and pycnidia. After the sap of the walnut tree begins to flow the following spring, when suitable conditions for disease development occur, conidia are produced,
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Walnut Leaf Webber Pest: Symptom Identification and Control Methods
1. Distribution and damage symptoms. It is a major leaf-eating pest of walnut, distributed in North China, Northwest China and Central-South China. The larvae bite and feed on walnut leaves, and when outbreaks are severe they can strip all the leaves from the entire tree. 2. Morphological characteristics and life habits. It belongs to the order Lepidoptera, family Pyralidae, also known as the wood webworm, and the leaf-webber pyralid.
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Introduction to Common Citrus Varieties and Identification of Citrus Huanglongbing Symptoms
Citrus Huanglongbing (HLB) can occur and cause damage almost all year round, and symptoms can appear during every new shoot stage, but symptoms are most prominent and easiest to identify in autumn and winter, causing great harm to the branches, leaves, fruit and root system of the fruit tree. So what
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Detailed Guide to Symptom Identification and Control Methods for Apple Moldy Core
Apple moldy core is also called core rot, moldy rot, red rot, fruit rot, etc. The symptoms mainly damage the fruit, especially an important fruit disease of Delicious strain varieties and Fujin, Luxiang, etc. bred using Delicious strain varieties as parents. Its symptoms appear in 2 types. (1) Moldy
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What do freshwater hatchetfish (Gasteropelecidae) eat and how big can they grow? Care and male-female identification
Hatchetfish, also known as flying characins, are a common type of ornamental fish. Because they are the only fish that can truly fly, and their flight differs from the gliding of flying fish, they attract a large number of ornamental fish enthusiasts. They are currently available for sale on the market. So what do hatchetfish eat to grow? How big can they grow? How do you tell male from female? How
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How to Tell a Many-Banded Krait from a White-Banded Wolf Snake? A Detailed Guide to Identification Techniques
The many-banded krait and the white-banded wolf snake look extremely alike, but one is venomous and the other is not. So how do we tell them apart? The many-banded krait, commonly known as Guojixia, Baijiehei, Jinqianbaihuashe, Yinjiadai, Yinbaotie, and so on. Its venom is extremely potent, making it the fourth most venomous snake on land. It belongs to the family Elapidae - genus Bungarus.
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Does the yellow catfish have spines on its back and is it a "stimulating food"? Plus sea fish identification, prices and farming techniques
Yellow catfish is also known as Angyi, Huang'ang, Angci, steel needle, yellow bone fish, yellow tooth fish, and Angci fish; in Hunan it is called yellow duck call, and it has become a famous Hunan dish. So is yellow catfish a stimulating food? Is it a sea fish? Can dead ones be eaten? What is the price per jin? Farming
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Chick Sex Identification, Suitable Rearing Temperatures and Breeding Management Techniques
Chicks refer to newly hatched chickens, from 0 to 50 days. The hatching weight of chicks varies by breed and type; generally, broiler chicks weigh about 40 grams at hatching, while layer chicks weigh 36 to 38 grams. So how do you identify male and female chicks? How do you rear them? What is the suitable temperature? What breeding management techniques are there
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2018 Price Per Jin of Wild Soft-Shelled Turtles, Profit Per Mu, Identification and Nutritional Value
The soft-shelled turtle, also known as the tuan yu or jiao yu, with the scientific name Chinese softshell turtle (Pelodiscus sinensis). Because its nutritional value is extremely high, its price is also very expensive. Eating soft-shelled turtle has excellent health benefits for people. Today it is farmed and distributed in many regions of China. Do you know how much a jin of wild soft-shelled turtle costs
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