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Detailed Explanation of Techniques and Methods for Controlling Winter Jujube Fruit Shrink Disease
Winter jujube is a fruit that everyone loves very much, generally marketed in October each year, and winter jujube fruit shrink disease is a common disease during winter jujube cultivation, which can seriously affect fruit yield and quality. So how should winter jujube fruit shrink disease be controlled? Let's take a look together with the editor.
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How do you treat apple water core cracking and fruit shrinkage disease? What spray should be used?
Apple fruit surface cracking is a physiological disorder that has become widespread in recent years, and fruit growers commonly call it apple cracking disease. Fruit shrinkage disease, on the other hand, causes small, deformed fruit that tends to drop early. So how do you treat apple water core cracking and fruit shrinkage disease? What spray should be used? How do you treat apple water core cracking? What spray should be used?
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How to prevent and control winter jujube fruit shrink disease? Understand the key techniques in one article
Prevention and control techniques for winter jujube fruit shrink disease
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Experimental Methods and Results Analysis for the Control of Jujube Fruit Shrinkage Disease
In recent years, jujube fruit shrinkage disease has become increasingly severe. Jujube fruit generally becomes affected at the white fruit stage, and often a large number of fruits drop within a few days. In ordinary years the incidence rate is 5%-8%, and in severe cases the proportion of diseased fruit reaches over 30%. Diseased fruit tastes bitter and is unfit to eat, seriously affecting the quality and yield of jujube fruit. Because opinions differ from place to place on the pathogenic factor of this disease, and it was discovered in our county only just over 10 years ago, there is still no successful experience in controlling it. After consulting materials from many sources and conducting field observations, the fruit tree station formulated an experimental plan for the control of jujube fruit shrinkage disease and achieved fairly good results.
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How to prevent and control jujube fruit shrinkage disease? Understanding the occurrence pattern is key
Jujube fruit shrinkage disease, also known as jujube iron skin disease, jujube black rot, jujube dry waist fruit shrinkage disease, jujube wilt fruit disease, wu chao, wu luo tou, wu chao, tie jiao, etc., was first officially reported in China in the late 1970s. It is found throughout all major jujube-growing regions nationwide, and its damage is becoming increasingly severe, having already become a devastating disease in jujube production. In recent years, the disease has become increasingly serious in jujube-producing areas of Shanxi Province, becoming an important factor affecting jujube yield and commercial quality. However, current reports on the pathogen and control patterns of this disease are inconsistent, and no effective control method has been found
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What are the control methods for jujube fruit shrinkage disease?
1. Symptoms: When jujube fruit shrinkage disease occurs, a pale yellow halo (ring) first appears on the shoulder or waist of the fruit, gradually expanding into irregular sunken lesions; the peel becomes water-soaked and infiltrated, with scattered needle-like round brown dots, and the flesh becomes earthy yellow, soft, spongy and necrotic; the fruit shrivels, tastes bitter, and is unfit to eat. 2. Disease pattern: Preliminary research has determined that jujube fruit shrinkage disease is a bacterial disease, and the pathogen mainly overwinters on fallen diseased fruit. It generally spreads and infects jujube fruit during the fruit coloring and ripening stage; the pathogen enters through fruit wounds via wind and rain or directly penetrates the peel.
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How to prevent and control jujube fruit shrink disease? A full analysis of the key technical points
Jujube fruit shrink disease is a new disease of jujube trees, often occurring together with anthracnose. When this disease breaks out severely, it causes reduced yields in mild cases and total crop failure in severe cases, and in recent years it has caused huge losses in the jujube-growing areas of our city. The disease mainly damages jujube fruit, causing fruit rot and fruit drop. It occurs during the coloring stage of jujube fruit; in our city it begins in mid-to-late July, and mid-to-late August is the peak period of the disease. Affected jujube fruit first shows a pale yellow halo on the fruit shoulder and body, which then gradually expands into round or irregular water-soaked discolored lesions, with a round brown spot in the center; the flesh in the diseased area
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Occurrence Patterns and Control Methods of Jujube Fruit Shrink Disease
Jujube fruit shrink disease, also known as black rot, is a new disease of jujube trees. When this disease breaks out severely, it has a serious impact on both the quality and yield of jujube fruit. 1. Symptoms: The disease mainly damages the fruit, causing fruit rot and premature fruit drop. Affected fruit first develop a pale yellow halo on the shoulder or body, which gradually expands into sunken, irregular pale yellow lesions; then the peel becomes water-soaked and infiltrated, with scattered needle-like round brown dots, the flesh turns earthy yellow, loose and soft, and the diseased tissue becomes spongy and necrotic, while the outer peel turns dark red and lusterless. Diseased fruit
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What are the control methods for jujube fruit shrinkage disease?
The occurrence of jujube fruit shrinkage disease is positively correlated with the density of piercing-sucking insects; when atmospheric humidity is high, especially with intermittent rainfall or successive cloudy days, the disease often becomes epidemic. Control methods: (1) If the disease index was relatively high the previous year, first clean up fallen leaves and fallen fruit in the jujube orchard and dispose of them in a centralized manner to cut off the source of transmission. (2) Strengthen fertilizer and water management in the jujube orchard to improve tree resistance; for older trees, scrape off and burn old bark before jujube bud break, and spray the whole tree once with lime sulfur mixture. (3) Chemical control: use Fungus No. 1
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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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