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Control Methods for Yellowing Leaves of Winter Jujube Trees
Yellowing leaves of winter jujube trees are mainly caused by weakened tree vigor, and the causes of leaf yellowing are many-sided. First, diseases such as bacterial scab, jujube rust, and dieback cause early defoliation, resulting in insufficient stored nutrients in the tree and weakened tree vigor, which leads to
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How to prevent and control peach leaf curl? Those growing peach trees should know early
1. Symptoms and damage. This disease occurs from time to time in the south. When severe, it causes branch dieback and affects ornamental value. The disease mainly damages leaves. When leaves unfold in early spring, the leaf margins curl downward. Part of or the entire diseased leaf becomes blistered and enlarged, the leaf becomes thicker, brittle in texture, and yellow or red, and the leaves
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How to prevent and control peach latent mosaic viroid? Key points for disease prevention in peach tree cultivation
Peach latent mosaic viroid is also known as peach mosaic disease, peach yellow mosaic disease, peach variegation disease, etc. It occurs in many countries such as the United States and Japan, and similar diseased plants have also been found in China. The only host of this disease is peach. (1) Symptoms Peach latent mosaic viroid is a latent disease, and the leaves generally do not
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How to prevent and control peach bacterial shot hole? A detailed guide to peach tree disease prevention and control methods
Peach bacterial shot hole is a widely distributed disease with a high incidence rate. Bacterial shot hole occurs in all peach-producing areas nationwide, especially in coastal and lakeside areas, in orchards with poor drainage, and in rainy years, where it often breaks out severely. If not controlled in time, it easily causes
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How to Control the Alternate Bearing of Plum Trees? Practical Cultivation and Management Methods
1. Reasonable pruning to regulate tree vigor. On-year trees should be pruned early (before the onset of winter) and heavily. Remove dead branches, residual branches, slender branches, scorched-tip branches, diseased and pest-infested branches, and excessively dense, crossing branches. Do more heading back to stimulate shoot growth; for vigorous branches and competing branches, cut back hard, removing 2/3 to 3/4 of the branch or leaving only 3 to 5 buds. Thin flower buds early, prune away excess flowering branches, and reduce the fruit load. Off-year trees should be pruned late (around the beginning of spring), keeping flowering branches and thinning out non-flowering vegetative branches. Leave branches unpruned or bend them down to moderate tree vigor, retain as many flowers and fruits as possible, and increase the fruit set.
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A Detailed Guide to Common Pests and Diseases of Plum Trees and Their Control Methods
After the first pinching of the plum tree, pinch the new secondary shoots when they reach 20 cm, and pinch the developing branches when they reach 60-80 cm. If there are many branches, some can be thinned out; if the branches are not too dense, thin as little as possible and control more. Before mid-July, the weeds in the orchard must be completely removed
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How to prevent and control insects boring inside plum fruits?
Speaking of plums, I think everyone is familiar with them. I remember that when I was a child, there were several plum trees right at our doorstep, but back then our family did not need to manage the plum trees much, and they still bore plenty of fruit every year. But if you want to grow plums that are both tasty and good-looking,
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Occurrence and Control Methods of Pests and Diseases in Hami Melon Cultivation
I. Bacterial Leaf Spot Symptoms: In the early stage, water-soaked lesions appear near the veins on the underside of leaves. The lesions expand rapidly and merge together, with a yellow halo at the edges. Control method: In the early stage of the disease, spray the leaves with 77% Duoning at 500 times dilution or 3% Zhongshengjunsu at 800 times dilution 2-3 times, once every 4-5 days.
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How to prevent and control powdery mildew in cantaloupe cultivation?
Powdery mildew is a major disease of cantaloupe, widely distributed and commonly occurring, occurring both in protected cultivation and in open fields, severely affecting cantaloupe yield and quality. Symptoms can occur throughout the entire growth period, and it can infect leaves, petioles and stems. Initially, white
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What are the control methods for Cercospora leaf spot on cantaloupe?
Brown spot is a common disease of cantaloupe, widely distributed, mostly occurring sporadically, with mild symptoms and no impact on production. In severe cases, the diseased plant rate can reach over 80%, causing some leaves to become diseased and necrotic, affecting yield and quality to a certain extent. Symptoms: This disease mostly occurs in the mid-to-late growth stage of cantaloupe
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