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How to prevent and control peach leaf brown spot and shot hole disease? Detailed explanation of prevention and control methods
Occurrence pattern: The pathogen mainly overwinters as mycelium on diseased leaves or in the diseased tissues of affected shoots. In the spring of the following year, as temperatures rise and rain arrives, the pathogen produces conidia. The conidia spread by wind and rain, infecting leaves, new shoots and fruit. The disease occurs more severely in orchards on low-lying land with poor ventilation and damp, shady conditions, or in rainy years. Prevention and control methods: (1) Agricultural control: reasonable pruning. Keep the orchard well ventilated and well lit, reduce humidity in the peach orchard, and create conditions unfavorable for the disease.
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How to Store and Preserve Fresh Peaches? Introduction to Three Practical Methods
Cold storage. Peaches are prone to chilling injury during low-temperature storage, and there is a risk of freezing at -1°C. Therefore, the suitable storage temperature for peaches is 0°C, and the suitable relative humidity is 90%-95%. Under these storage conditions, peaches can be stored for 3-4 weeks or longer. However, when peaches are stored at low temperatures for a long time, the flavor gradually becomes bland. Long-term low-temperature cold storage can cause chilling injury to the peaches, with the flesh turning brown. In particular, when the peaches are moved to a high-temperature environment for ripening, the flesh becomes dry, mealy, and soft, and the flesh around the pit turns noticeably brown. In the cold storage
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Introduction to the Technical Methods of Bagging Pear Fruit
1. Bagging effect: it can improve fruit quality, control fruit diseases and pests, reduce pesticide residues, and increase fruit storability. 2. Selection of paper bag types: suitable paper bag types should be chosen according to different cultivars, different climatic conditions, different bagging purposes and economic conditions. For green-skinned pear cultivars, single-layer bags are preferable; for cultivars with large and dense fruit dots, paper bags with strong shading properties should be used. Among Japanese pear cultivars, Housui pear is best suited to a single-layer kraft paper bag coated with paraffin, while Kosui is best suited to a bag with a green inner layer and an outer layer that is white outside and black inside
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A Practical Method for Treating Pig Lice with Peach Leaves
Pigs are prone to lice, which not only affects hygiene but also hinders their growth. Practice has shown that treating pig lice with peach leaf water is effective. The specific method is: take 1 kg of fresh peach leaves, add 2.5 kg of clean water, boil until it comes to a rolling boil, let it cool, then filter out the residue. Rub the liquid onto the areas where the pigs have lice, once every 3-5 days, for 2-3 consecutive applications, and the lice on the pigs will be completely eliminated.
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What methods are there to prevent chilling injury in stored peaches?
Peaches are climacteric fruits, with a respiratory peak and poor storage tolerance; at room temperature they can be stored for only a few days, and most cultivars can be stored at 0°C or below for only 15~30 days. After harvest, peach fruit enzyme activity and respiration are both very strong, so at room temperature the fruit easily softens and rots; low temperature, low oxygen and higher carbon dioxide can inhibit respiration and enzyme activity. At 0°C, using film bag packaging and controlled atmosphere storage, controlling 1%~2% oxygen and 3%~5% carbon dioxide, and applying an ethylene absorbent, the fruit can be stored for 2 months, but care must be taken
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Storage Methods and Technical Key Points for Peaches, Plums, and Apricots
(1) Room-temperature storage: Peaches are not suitable for room-temperature storage, but due to the needs of transportation and shelf-life preservation, certain measures can be taken to extend the room-temperature freshness life of peaches. 1. Calcium treatment: Soak peach fruit in a 0.2%-1.5% CaCl2 solution for 2 min or vacuum-soak for several minutes, drain the liquid, and leave bare indoors; for mid- and late-maturing cultivars this can improve storability. 2. Heat treatment: Soak fruit in constant-temperature water at 52°C for 2 min, or hold in steam at 54°C for 15 min, which can
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Processing Technology and Production Methods for Pear Preserves
1. Selection and Processing of Raw Materials Raw materials with large fruit shape, small core, relatively high acidity, and no significant browning are better for boiling-resistant varieties. Generally, harvest when the fruit is ripe and relatively firm, grade by size and maturity, and remove insect-damaged, diseased, and rotten fruit. Peel, cut in half, remove the core, then soak in a mixed solution containing 0.1% calcium chloride (or 1.5% lime solution) and 0.2%-0.3% sodium sulfite for hardening and sulfur treatment for 10-15 hours. Firm-fleshed fruits are only soaked in sulfur, without hardening treatment.
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Control Methods and Key Technical Points for the Peach Fruit Borer in Plum Trees
Symptoms: The hatched larvae bore into the fruit from the base of the fruit stalk, tunnel along the pit into the fruit to feed, and the gum flowing from the bore hole together with the brown frass excreted by the larvae sticks to the fruit surface, causing the tunnel to overflow with frass and making the fruit unfit to eat. Control method: During the peak egg-laying periods of the first and second generations of adults in April to May, when most of the eggs on the fruit turn red, promptly spray 2.5% deltamethrin at 2500 times dilution, 50% phoxim emulsifiable concentrate at 1000 times dilution, or 40% omethoate at 1000 times dilution.
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Processing Methods and Technical Key Points of Golden Thread Candied Jujubes
The jujube is a fruit cultivated relatively early in China, and it has high nutritional value. Golden thread candied jujube is a traditional product among Beijing-style preserved fruits, named for the many thread-like stripes on the product. The processing technique is as follows: 1. Material selection: choose varieties with large fruit shape, small pits and thin skin. 2. Scoring: after grading, wash the fresh jujubes with clean water, drain them, and use a needle row or a scoring knife, or machinery, to score 50-100 longitudinal cuts on the fresh jujubes (depending on the size of the jujube fruit), with a depth not exceeding half of the fruit. The score spacing
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Processing Method and Production Technique for Spiced Candied Carambola
This product is made by candying fresh carambola with spices. The processing technique is as follows: 1. Raw material preparation: After washing the fresh carambola, remove the ribs and cut it lengthwise into single segments, then slice into long petal-shaped thin pieces. 2. Hardening treatment: Use alum or calcium bisulfite as the hardening agent. Soak in a 3% alum solution or 0.2% calcium bisulfite solution for 6-8 hours, remove, drain off the water, and prepare for spiced candying. 3. Spiced candying: For every 50 kg of fresh carambola slices, prepare a mixed powder made from equal amounts of clove, dried tangerine peel, and licorice ground together
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