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How to prevent pumpkin fruit abortion? A full breakdown of practical prevention methods
How to prevent pumpkin fruit abortion? Please explain the methods. The causes of pumpkin fruit abortion and the control methods can refer to the following: Causes (1) Main symptoms: young fruit that has grown to a certain size stops growing, gradually turns yellow and shrinks, and finally dries up or drops off. (2) Causes of the disease: poor pollen development. In early spring in greenhouses the temperature is low, and in the later stage of plastic tunnels the temperature is too high, causing poor pollen
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How to Fertilize Ginkgo Trees? A Full Guide to Practical Fertilization Techniques
1. Choose a suitable planting site. The plot for planting ginkgo must have deep, fertile soil, with a mature soil layer of no less than 30 cm, organic matter content greater than 1%, a year-round groundwater level below 2.5 m, and soil salt content no more than 0.05%. 2. Do not use fake grafted ginkgo seedlings. Ginkgo seedlings are divided into seedling-grown and grafted seedlings, ...
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How to control aphids in cornfields? These methods are very practical
How to control aphids in cornfields? The methods for controlling aphids in cornfields are as follows: (1) Chemical control: use 5% phorate granules at 200 g per 667 sq m, mix with 1.5 kg of fine sand or soil, apply the pesticide every other ridge, and fumigate to kill the aphids; spray 0.5% dimethoate powder at 1.5-2.0 kg per 667 sq m, or 50% dimethoate...
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How can the fruit-setting rate of winter jujube be improved? These methods are very practical
How can the fruit-setting rate of winter jujube be improved? Please advise on methods. The fruit-setting rate of winter jujube can be improved through the following methods: 1. Summer pruning. For winter jujube trees that have entered the fruiting stage, to achieve normal fruit setting, in addition to proper winter pruning, summer pruning must also be done well. Summer pruning begins at sprouting, and all secondary shoots that do not need to be cultivated should be removed. In May...
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Water spinach balcony growing tips, simple, practical and tasty
Water spinach, everyone should know it, right? It could be considered a plant you can eat every day, and it is a very common vegetable. In most people's minds, vegetables should be grown in the yard or in the fields, but water spinach can actually...
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Eucalyptus Pest and Disease Control Methods and Key Practical Techniques
The main pests and diseases of eucalyptus include: bacterial wilt, leaf blight (commonly known as defoliation disease), eucalyptus seedling stem rot, eucalyptus leaf roller, termites, and scarab beetles, etc. (1) Bacterial wilt: When the bacterial wilt pathogen infects young trees in the forest, the above-ground symptoms can be divided into two types. The first is the acute type, in which the leaves of the diseased plant rapidly lose water and wilt, hanging on the branches without falling off, showing the typical "green wilt" symptom. For this type of diseased plant, the time from onset to the death of the whole plant is relatively short, generally only 2-3 weeks. The second is the chronic type, in which the diseased plant shows stunted growth, dwarfism, and the lower leaves first turn purplish-red, then gradually deepen and spread upward, and finally the leaves dry up and fall off. Some stems and side branches develop irregular dark brown necrotic spots, and in severe cases the entire plant dies. For this type, the time from onset to the death of the whole plant is relatively long, generally 3-6 months. Eucalyptus bacterial wilt is prone to epidemic outbreaks under high temperature and high humidity. Root collar injury, surface runoff, and root-to-root contact between plants are the main pathways for pathogen invasion and spread. Control measures: select disease-resistant strains; carry out quarantine of seedlings before leaving the nursery, and try to avoid bringing diseased seedlings to the plantation; also try to avoid establishing eucalyptus plantations on forest land that is likely to carry Pseudomonas solanacearum (soil where peanuts, tobacco, potatoes, tomatoes, mulberries, kapok, beefwood, and canna have been planted); do not apply undecomposed organic fertilizer; strengthen tending and management to improve tree disease resistance. After a plant becomes diseased, there is still no proven effective control method; once discovered, the only option is to immediately pull it out roots and all, spread lime on the soil in the planting hole for disinfection, and destroy the diseased plant.
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How to Improve the Color of Red Fuji Apples? A Full Breakdown of Practical Management Tips
How to improve the color of Red Fuji apples? Please explain: once the sun-facing side of the fruit has colored, promptly remove the leaves that shade the fruit and affect its coloring. For the uncolored side of the fruit or the touching surfaces of two twin fruits, they should be turned toward the sunny side at the right time. In the later stage of fruit growth, stakes and branch tying should be set up in time to prevent overlapping, squeezing, and drooping of fruiting branches that touch the ground and affect coloring.
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What are some practical tips for controlling walnut pests and diseases?
What are the key secrets to controlling walnut pests and diseases? Please advise. The following introduces several key tips for controlling walnut pests and diseases for reference: Variety selection is the root cause. Nowadays, walnut cultivation is being developed in many places, all rushing in like a swarm, some planting seedling trees, some planting grafted seedlings. The problems brought by rushing ahead are many. For example, it leads to mixed walnut varieties, and serious cross-infection of pathogens.
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A detailed explanation of orchid leaf silver, understanding orchid practical knowledge in one article
The probability of an orchid plant producing variegation is very low, unless your orchid itself has potential variegation traits, such as silver on the back of the leaves, especially dragon-root seedlings with abundant back silver. As long as good back silver appears, this plant will definitely evolve astonishing variegation patterns, but...
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Practical Methods of Using Fertilizers to Control Crop Pests
1. Nitrogen fertilizer: Commonly used nitrogen fertilizers, such as urea, ammonium bicarbonate, and ammonia water, have stimulating, corrosive, and fumigating effects on pests, and are effective for controlling small, low-endurance pests such as aphids and red spider mites. When pests occur, spray a 2% urea solution or 1% ammonium bicarbonate solution on the leaves, once every 7 days, for 2--3...
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