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Identification and control methods of banana flower thrips
What are banana flower thrips and how to control them? Friends asked for an introduction. Zhongdiwang has compiled the damage caused by banana flower thrips and control methods, listed below for netizens' reference. Damage caused by banana flower thrips: banana flower thrips are extremely small, only about 0.5 mm, occur year-round, can fly and jump. After the bud emerges but before the bracts open, thrips have already bored inside the bracts...
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Identification of Citrus Magnesium Deficiency Symptoms and Remedies
What is citrus magnesium deficiency? How to remedy it? Please advise. Citrus magnesium deficiency can occur year-round, but it occurs most often in late summer or autumn when the fruit is nearly ripe, and the old leaves and leaves near the fruit show obvious magnesium deficiency symptoms first. This is because when citrus is deficient in magnesium, the magnesium present in the older organ tissues is often transferred...
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Symptom Identification and Control Methods of Banana Anthracnose
What is banana anthracnose and how to control it? Please give an introduction. Anthracnose is a common disease in banana-producing areas and also the most important post-harvest disease in banana-producing areas worldwide. On yellow-ripe fruit peel, plum-blossom-spot-like lesions appear, and the lesions rapidly expand into dark brown patches, causing the whole fruit to turn black and rot. When the fruit stalk is affected, it causes the banana fingers to drop...
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Symptom Identification and Control Methods for Chinese Bayberry Pests
May and June are the season when Chinese bayberry ripens and is harvested. Harvesting Chinese bayberry at the right time and promptly doing a good job of storage and freshness preservation are an important part of improving economic returns. The following introduces the harvesting and storage techniques for Chinese bayberry: determining the suitable harvest time for Chinese bayberry. The ripening period of Chinese bayberry varies depending on the production area and variety; the earliest to ripen does so in April, ...
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Detailed Explanation of Grape Downy Mildew Symptoms and Identification Methods
Symptom identification: It is a fungal disease, mainly affecting leaves, new shoots and young fruit. On affected leaves, pale yellowish-brown water-soaked spots with indistinct edges first appear; the lesions gradually expand into irregular or slightly rounded large yellowish-brown patches, up to 1-3 cm in diameter, with indistinct edges. Multiple lesions can merge into large patches, and in wet...
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What to Do About Phosphorus Deficiency in Sugarcane? Symptom Identification and Control Methods
In the mid-to-late growth stages of sugarcane in Jinggu County, it is prone to damage by sugarcane woolly aphids. If control is not timely, it can cause severe yield reduction in sugarcane. Sugarcane woolly aphids gather on the back of leaves along both sides of the midrib, sucking sap, causing sugarcane leaves to wither and yellow, and excrete honeydew on the leaves, inducing sooty mold, affecting normal leaf photosynthesis...
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Identification and Control Methods for Common Cherry Diseases and Pests
Many of the diseases and pests affecting cherries are the same as those of other stone fruit trees, so their control methods can be used for reference. The main diseases harming cherries are shot hole disease, crown and root collar rot, and gummosis. Crown and root collar rot mostly occurs on trees in their first fruiting stage, causing the crown and root collar to decay. Control methods: mainly avoid piling soil around the root collar for long periods, and control underground pests that gnaw and wound the bark. At the same time, check frequently; when diseased plants are found, scrape and treat them promptly, and after scraping, disinfect with Bordeaux mixture or lime sulfur mixture. For severe crown and root collar rot, the aboveground growth can also be restored through spring bridge grafting. The main pests harming cherries include the red-necked longhorn beetle, the golden-line jewel beetle, the small clearwing moth, the spherical scale insect, and the phalera caterpillar. The small clearwing moth has one generation per year, and its larvae cause damage within the cortex of large branches. Control measures mainly include spraying during the peak emergence period of adults, whitewashing the branches and trunk to prevent egg laying, and promptly spraying or digging out larvae when their frass is found in the field.
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Identification and Control Methods for Pineapple Mealybugs
Pineapple mealybugs belong to the order Homoptera, family Pseudococcidae. Dysmicoccus brevipes is the most commonly seen species. The damage symptoms are caused by adults and nymphs feeding on the sap of pineapple rhizomes, leaves, fruits and seedlings. Affected leaves first show symptoms starting from the lower part, gradually fading upward to yellow and finally turning red-purple; in severe cases all leaves soften and droop...
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Symptom Identification and Spring Control of Watermelon Fruit Flesh Deterioration
Symptoms: When watermelon fruits are exposed to the scorching sun, the fruit surface temperature becomes very high, and the fruit tissue is scorched and necrosed, forming a dry scar. Cause: Sunburn is related to variety; varieties with dark rind color are prone to it. Secondly, in hilly areas where the soil is relatively poor, the plants have weak vegetative growth and few vines and leaves, and the disease occurs frequently when the fruits are exposed...
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What to Do When Open-Field Melons Get Mosaic Virus Disease? Symptom Identification and Control Methods
Symptoms: In the early stage of the disease, the leaves show mosaic mottling interwoven with yellow-green and dark green, the leaves become smaller, and the leaf surface is wrinkled, uneven, and curled. The main vine is distorted and stunted, the plant is dwarfed, the melons are small, and the fruit surface has mottled patches of alternating light and dark, or slight bump-like protrusions. Causes: The incidence of mosaic virus disease has been relatively high in recent years...
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