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How to prevent lychee fruit cracking? Calcium application is an effective method
In recent years, lychee fruit cracking (in cultivars such as Nuomici, Guiwei, Sanyuehong, Lusha, and Tianyan) has become fairly common. Lychee fruit cracking mostly occurs during the fruit enlargement stage, generally at 20-30% in normal years, and reaching 50% in severe cases. There are many domestic reports on the causes and mechanisms of lychee fruit cracking, and many researchers have mentioned...
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Clever pruning of apricot trees can effectively delay flowering
The buds of apricot trees have extremely strong precocity and a high capacity for recovery. If heavy pruning is done appropriately in winter, combined with tip pruning in summer, it can encourage 2 to 3 rounds of secondary shoots to sprout in summer and autumn. On the three levels of new shoots - spring, summer and autumn - flower buds at different stages of development will form, and the flowering period in early spring will be greatly extended, which will reduce the chance of frost...
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Using chlorpyrifos for peanut seed dressing can effectively control insect pests
Peanut seed dressing without insect damage - chlorpyrifos peanut seed dressing without insect damage is a non-toxic, residue-free biological insecticide that mainly acts on the nervous system of soil-dwelling pests, causing metabolic disorders so they stop feeding and die; it is especially sensitive to larvae. With one seed dressing, it remains active in the soil for more than 130 days and can effectively...
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Effect of phosphorus nutrition on double-low rapeseed and the timing of application
Rapeseed white butterfly, scientific name Artogeia (Pieris) rapae (Linnaeus), order Lepidoptera, family Pieridae. Synonym Artogeia rapae (L.). Also known as the cabbage white butterfly, white powder butterfly. The larva is called the cabbage caterpillar. Distributed throughout the country. Hosts include rapeseed, cabbage, cauliflower, Chinese cabbage, radish and other cruciferous vegetables...
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How can corn red leaf disease be controlled effectively?
Symptoms: When improved varieties bred with Huangzaosi encounter low temperatures and rainy, overcast weather during the grain-filling stage, their leaves turn red, which is called red leaf disease. Cause: The occurrence of this disease is related to the fast grain-filling of this variety. When large amounts of synthesized sugars cannot be quickly converted due to metabolic disorders, they become anthocyanins, and the green leaves turn red. Control methods: (1) In areas where it occurs severely, do not...
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How to apply fungicides for effective control of powdery mildew on melons
1. Choose disease-resistant varieties. Disease resistance varies noticeably among different melon varieties, so choosing disease-resistant varieties is key to controlling the severity of the disease. 2. Clean up the field. After harvest, weeds and crop residues should be removed promptly; during the melon growing season, weed promptly, remove diseased leaves, and take weeds, residues, and diseased leaves...
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Analysis of Why Melons Fail to Set Fruit and Effective Measures to Overcome It
1. Promoting flowers and preserving fruit: At the early flowering stage, young fruit stage and fruit swelling stage, spray the Zhuangguadi Ling solution once each time. This can thicken the fruit stalk, strengthen the targeted nutrient supply, promote rapid fruit development, produce attractive fruit shape with abundant juice and good flavor; during the growth cycle there will be no flower drop, no fruit drop, no split fruit, and no deformed fruit. At the same time, strengthen field fertilization and irrigation...
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Chinese cabbage in autumn is prone to cabbage worms, so how can you control them more effectively?
Summary: Autumn Chinese cabbage is prone to cabbage worms, and these methods leave lower pesticide residues. Chinese cabbage is one of the vegetables in greatest demand in winter, especially in the northern vegetable market. Basically, one family can eat two or three bags of Chinese cabbage over a winter. Pickled Chinese cabbage, stewed Chinese cabbage, vinegar-tossed Chinese cabbage, and so on - Chinese cabbage is truly an indispensable good vegetable on the winter dining table. But the frequent outbreak of cabbage worms also really gives vegetable growers a headache. On Chinese cabbage that had been growing well, once cabbage worms crawl over the leaves, the leaves are either covered with holes or covered with insect droppings. This not only affects appearance, but more importantly affects yield.
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How to effectively prevent and control cotton bacterial angular leaf spot
I. Agricultural measures. 1. Prepare the soil carefully, apply sufficient basal fertilizer, ensure adequate pre-planting soil moisture, and select disease-resistant varieties. 2. Practice rational crop rotation, plow deeply and irrigate in winter to promote the decomposition of diseased plant residues. 3. During the seedling stage, strengthen intertillage, reduce soil moisture, apply less nitrogen fertilizer and more phosphorus and potassium fertilizer, and cultivate strong seedlings. 4. Strengthen cotton field management, drain promptly after rain...
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How to effectively prevent and control hollow heart in spring watermelons
Symptoms: Gaps or hollow cavities appear in the flesh inside the watermelon fruit. Causes: It occurs easily when fruit is set at low nodes, when excessive nitrogen nutrition causes rampant vine growth, or when fruit set is poor and leaf area increases. The main cause is excessive accumulation of nutrients in the plant. Hollow fruit usually shows longitudinal grooves on the fruit surface, with thick rind, irregular fruit shape...
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