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What are the control methods for cherry wood rot?
The symptoms appear on various wound sites such as frost injury, insect injury, and mechanical injury on branches and trunks, where small fruiting bodies of the pathogen are scattered or clustered, which are its external symptoms. The affected xylem forms a rather indistinct white sapwood rot. Pathogenic fungus, Basidiomycota, Agaricomycetes, Aphyllophorales
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How to prevent and control gummosis in cherry trees? Growers need to master these methods
Symptoms Gummosis is an important disease of cherry trees, and its symptoms fall into two types: dry rot type and canker type gummosis. The dry rot type mostly occurs on the trunk and main branches. In the early stage, the lesions are irregular, dark brown, and hard on the surface, often causing gumming. In the later stage, the lesions become elongated, dry-shrunken and sunken, sometimes with cracking around them, and densely covered with small black dots on the surface.
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Symptom Identification and Control Methods for Early Leaf Drop Disease in Pomegranate
Early leaf drop disease includes several diseases. Based on lesion characteristics, it can be divided into brown spot disease, round spot disease, and ring spot disease, among which brown spot disease is the most serious. When the disease is severe, it causes massive early leaf drop, leading to premature tree decline, fewer flower buds, and reduced yield. 1.
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How to prevent and control pomegranate brown spot? A detailed guide to practical methods
Distribution and harm: It occurs in all pomegranate-producing areas in China. It mainly harms leaves and fruits, causing early fruit drop and leaf drop, and causing varying degrees of loss to pomegranate production. I. Symptom identification After leaves are infected, small dark brown spots appear at first, then expand into nearly round
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Detailed Explanation of Control Methods for Peach Gummosis
Peach gummosis is a disease commonly occurring on peach trees today, and its incidence is severe. Especially in peach orchards with extensive management and weakened tree vigor, the rate of affected trees can reach over 90%. This disease severely weakens tree vigor, affects yield and quality, and in severe cases leads to dead branches and dead trees, threatening
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How to prevent and control anthracnose in peach trees? These methods are very practical
Along with the adjustment of the agricultural industrial structure, the planting area of peach trees in our county has continued to expand. Due to the influence of various factors such as climatic conditions, varieties, and management, peach anthracnose occurs rather severely and has a relatively large impact on peach yield and quality. Effective prevention and control of anthracnose is very important for increasing yield
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Comprehensive Control Methods for the Peach Borer Moth in Peach Cultivation
The peach borer moth larvae bore into and feed on peach fruit, causing gumming; the fruit discolors and drops, or the interior becomes filled with insect frass, making it unfit to eat, and this has a great impact on both yield and quality. I. Occurrence pattern. In Shandong, this pest occurs in 2-3 generations per year, mainly overwintering as mature larvae in cocoons inside damaged mummified peaches, bark crevices, gaps among loose stones in embankments, chestnut burs, sunflower heads, castor seeds, and corn and sorghum stalks, with a small portion overwintering as pupae. In Shandong, the first moth emergence of the overwintering generation occurs in mid-May, with the peak in early to mid-June; most eggs of the 1st generation are laid on early-maturing peach varieties, with the most eggs laid on the ventral (belly) side; the newly hatched larvae appear in mid-to-late June and mainly damage early-maturing peach fruit, boring into the fruit to feed; mature larvae spin cocoons and pupate at the stem cavity of damaged fruit and in bark crevices. The 1st-generation adults begin emerging in early July, with the peak from late July to early August; adults are highly selective in egg-laying, basically laying eggs on late-maturing peach varieties and pomegranates; newly hatched 2nd-generation larvae are found in mid-to-late July, with the peak in early to mid-August; by late July, larvae are already found maturing and pupating. The pupation peak is in mid-to-late August. As late-maturing peaches begin to be harvested, adults then move to other crops to lay eggs and continue causing damage.
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What are the control methods for scale insects on peach trees
There are many species of scale insects that harm peach trees. The main species occurring in our province is the globose scale (Eulecanium kunoense), belonging to the order Homoptera, family Coccidae, genus Eulecanium. When its population is large, the affected branches are covered with dense layers of scale shells, causing poor tree growth; in severe cases, the leaves and small branches wither and die, and even the whole plant may die.
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Peach Tree Rot: Control Methods and Key Technical Points
Peach tree rot, also known as dieback disease, causes branches to wither and die after the peach tree is affected, forming canker lesions on large branches and the trunk; if not treated in time, it quickly causes the entire tree to die. The main causes of this disease are: freeze damage and extensive management; improper fertilization and years with heavy autumn rain,
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What are the control methods for the jujube gall midge, a pest of jujube trees?
Jujube gall midge (Contarinia sp.) (1) Aliases and taxonomic status: jujube bud maggot, leaf-rolling maggot, jujube maggot, belonging to Diptera, Cecidomyiidae. (2) Distribution: This insect is distributed in all jujube-growing areas across the country, with the five major jujube areas of Shandong, Shanxi, Henan, Hebei and Shaanxi suffering the most severe damage; it is one of the main pests of jujube leaves.
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