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Pear Tree Early Spring Frost Damage Protection Methods and Technical Key Points
I. Frost Prevention 1. Spray salt water: Before the late frost arrives, spray the tree with 10-20% salt water. This can increase the concentration of cell sap in the tree, lower the freezing point, and also increase air humidity. When water condenses in the cold, it releases latent heat, thereby protecting against frost damage. 2. Spray hormones: In early spring, spray 0.1-0.2% maleic hydrazide solution to inhibit budding and delay flowering,...
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Key Points and Technical Details for Spring Management of Pear Orchards
In mid-May, some fruit growers in Xinji, Shenzhou and other places found that after spraying pear trees with pesticides, the young fruit of some pear varieties developed black spots, affecting fruit quality. In order to investigate the causes of the black spots, on May 22, Ni Qunzhou of the Shijiazhuang Fruit Tree Research Institute of the Provincial Academy of Agriculture and Forestry Sciences, Liu Pingjun of the Jinzhou Forestry Bureau, and Xie Zhuang Technicians of Zhaoxian County...
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Key Technical Points for Preventing Physiological Diseases of Autumn Tomatoes
Early blight: After onset, concentric ring-patterned lesions appear on the leaf surface, dark brown, water-soaked. Before and after onset, spray with a 500-fold dilution of 70% mancozeb wettable powder, or a 400-fold dilution of 75% chlorothalonil wettable powder, once every 7 days, for 3 to 4 consecutive sprays.
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Key Technical Points for Plum Cultivation and Management in Greenhouses
In order to explore early-fruiting and early-high-yield techniques for cultivating plums in greenhouses, our station conducted experimental research from 1997 to 2000. The greenhouse was covered in the winter of the second year after planting, and in 2000, a 4-fen plot greenhouse produced 1000 kg of plums. The output value was over 10,000 yuan, and the maturity period was about 60 days earlier than open-field cultivation. Through the experiments, we summarized the techniques for cultivating plums in greenhouses...
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How to Grow Lettuce Seedlings in Summer? Key Technical Points Explained
Seed treatment: Because the seedling emergence rate is low when growing seedlings in summer, the seeds should be given low-temperature treatment. The method is to first soak the seeds for 12 hours, then wrap them well in gauze and place them in the refrigerator (2°C-5°C) for 2 days, then spread them out in a cool, shady place, and sow only after the seeds crack and sprout. Sowing: When sowing, avoid uneven spacing; before sowing, water thoroughly once as a base watering...
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Control Methods and Technical Key Points for Excessive Growth of Greenhouse Potatoes
Mepiquat chloride: During the bud stage to flowering stage of potatoes, foliar spraying of 60-120 mg/L mepiquat chloride (use the lower concentration limit at the bud stage) can inhibit the growth of the aboveground part of the plant, increase yield, and increase the proportion of large and medium tubers. Chlormequat chloride: During the plant bud stage to early flowering stage, use 2000-2500 mg/L chlormequat...
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Peach Tree Powdery Mildew: Control Methods and Key Technical Points
Control methods for peach tree powdery mildew: 1. After leaf fall, remove diseased leaves to reduce the source of infection. 2. Spray fungicides for protection during the growing season: in the early stage of the disease, spray 0.2 to 0.3 degrees Baume lime sulfur mixture, or a 2000 to 3000 times dilution of 15% wettable powder triadimefon, or a 1500 to 2000 times dilution of thiophanate-methyl. 3. Improve ventilation and light penetration...
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Peach Tree Pest and Disease Control Methods and Technical Key Points
1. Note that peach trees are chlorine-sensitive crops. Applying chlorine-containing fertilizer easily causes root rot and yellowing leaves; in mild cases the tree vigor weakens, and in severe cases the plant dies. Therefore, do not apply chlorine-containing fertilizers. 2. Be careful about watering during the flowering period. Watering during flowering can easily lower soil temperature and reduce soil air content, affecting root growth and absorption, leading to...
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Technical Guidance on Early Spring Pest and Disease Control for Peach Trees
Peach leaf curl mainly damages leaves, but can also harm young shoots and young fruit. It generally occurs from April to May and happens only once a year. When fruit is affected, it turns red, the diseased part swells, the fuzz falls off, and the surface becomes smooth. For agricultural control, select high-yield, high-quality, disease-resistant varieties. In peach orchards that have entered the fruiting stage, manage the soil and fertilizer well...
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Detailed Explanation of Key Technical Points for Summer Management of Nectarines
Pest and Disease Control The main pests and diseases of nectarines include: peach anthracnose, brown rot, little leaf disease, peach aphid, spider mite, leaf miner, etc. For such pests and diseases, spray 5-degree lime sulfur mixture once before bud break, spray once with 10% pirimicarb-plus wettable powder at 2000 times dilution after petal fall, and in early May and mid-to-late June respectively spray 72% agricultural streptomycin at 3000 times dilution...
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