What pesticides to spray for yellow leaf disease of red garlic seedlings

Yellow leaf disease can be treated with mildew and rooting agent to prevent and control it.

What is the deficiency of yellow leaf disease in fruit trees?

Generally, iron and zinc deficiency may lead to yellow leaf disease of fruit trees, among which iron deficiency yellow leaf disease is common.

The low-lying terrain of the orchard, the strong alkalinity of the soil, and the excessive diligence of watering will cause the soil to have poor air permeability, resulting in the iron in the soil being fixed and the roots of plants unable to absorb enough iron.

The main raw material for plant synthesis of chlorophyll is iron, and iron deficiency will lead to the obstruction of chlorophyll synthesis, yellowing and loss of green in leaf arcs, and the symptoms of yellow leaf disease appear.

Prevention and control of yellow leaf disease:

Strengthen agricultural prevention and control, minimize the area of single and double cropping rice mixed cropping, and cut off the tossing and turning of mediator insects. Turn the ground deep to reduce the number of overwintering hosts and insects.

Rational layout, continuous planting, as far as possible planting varieties with similar maturity period, to reduce the migration of mediators and disease transmission. Early sowing should be planted with disease-resistant varieties. When harvesting, turn your back to the harvested rice.

Choose disease-resistant varieties such as white shell dwarf, Boluo dwarf, IR29, Xinan dwarf, Muquan, etc.

Insect control and disease control eliminated the mediator insects before the transmission of poison, and the early rice was transplanted before the migration of the leafhoppers in the winter generation. The control was carried out during the migration period of leafhoppers in the wintering generation and the incubation period of the first generation of nymphs in paddy fields.

You can try the following agents: 5% emamectin benzoate microemulsion 7500-15000 times, 10% bifenthrin EC 3000-5000 times, 30% benzoconazole EC 3000 times, 15% mixed amino acid copper, zinc, manganese and magnesium aqueous 300-500 times, 40% flusilazole EC 5000-8000 times, 50% chlorobromoisocyanuric acid soluble powder 1500 times, natural brassinin EC 6000-10000 times, Green Wind 95

600 times, Kebao plant eugenics 1500-3000 times (transplanting crops, pesticide damage and fertilizer damage, frost damage, waterlogging damage, strong roots and seedlings, 1500 times the use of wang control) mixed evenly foliar spray.

Garlic yellow leaf disease can be usedAvermectincarbendazim andMancozebHigh-efficiency cypermethrin for prevention and control. Garlic yellow leaves are mainly lack of fertilizer, in the end of the winter month and the beginning of the month to apply a top dressing is the best, at the same time there are waterlogging factors, poor drainage, the formation of waterlogging, the production of yellow leaves, inevitable. If you want to solve the problem of garlic yellow leaves, you must first find out the specific cause, and then deal with it accordingly according to the actual situation.

Precautions for garlic yellow leaves:

1.It is forbidden to plant garlic in heavy crops, or to crop it in combination with onion and garlic crops to prevent diseases, pests and weeds, and reduce the occurrence of garlic yellow leaves.

2.Choose rotten farmhouse fertilizer as base fertilizer or top dressing, and advocate the use of finished organic fertilizer to reduce the occurrence of rotten seeds, seed burning, root burning, leaf burning, and seedling burning.

3.Choose the right sowing date. Sowing too early will cause frost damage and yellow leaves in winter. If the seeds are sown too late, the seedlings are also susceptible to freezing, or they are frozen to death.

4.Prevent yellow leaves at the debridement stage. You can choose to start watering and fertilizing before the mothering period to promote the root system to absorb water and nutrients in advance, which can weaken the occurrence of yellow leaves.

5.After the garlic enters the moss stage, ensure the nutrients **, keep the yellow moisture in the field to the state of moisture, prevent the phenomenon of dry and wet, and pay attention to the elimination of stagnant water.

6.Timely prevention of garlic maggots, root rot and other pests and diseases, to prevent the reduction of plant resistance, the formation of yellow leaves.

Summary. Hello, I am honored to answer for you: what medicine to apply for the yellowing of garlic seedling leaves 1, there are many kinds of garlic diseases, which are the reasons for the yellow leaves of garlic seedlings.

The solution is to use broad-spectrum fungicides carbendazim, dimethyl, leaf kuning, etc. for control, garlic if the root maggot damage caused by wilted yellow leaves, can use phosphine, pyrethroid, deltamethrin, pyrethrin, trichlorfon and other safe and reliable pollution-free pesticides for foliar spray. 2. Nutrient solutions and plant growth regulators such as urea, potassium dihydrogen phosphate and brassinolide can also be used to alleviate symptoms and restore the normal growth of garlic. If it is a hazard caused by herbicide residues in the stubble or excessive dosage of herbicides or other pesticides in this stubble, brassinin must be used.

3. In areas with irrigation conditions, irrigation must be carried out to increase moisture, and where there are no irrigation conditions, drip irrigation or watering must be adopted to solve the problem of water shortage of garlic seedlings and ensure the demand for water for garlic growth and development.

Hello, I am honored to answer for you: what medicine to apply for the yellowing of garlic seedling leaves 1, there are many kinds of garlic diseases, these are the reasons for the yellow leaves of garlic seedlings. The solution is to use broad-spectrum fungicides carbendazim, dimethyl, leaf kuning, etc. for control, garlic if the root maggot damage caused by wilted yellow leaves, can use phosphine, pyrethroid, deltamethrin, pyrethrin, trichlorfon and other safe and reliable pollution-free pesticides for foliar spray.

2. Nutrient solutions and plant growth regulators such as urea, potassium dihydrogen phosphate and brassinolide can also be used to alleviate symptoms and restore the normal growth of garlic. If it is a hazard caused by herbicide residues in the stubble or excessive dosage of herbicides or other pesticides in this stubble, brassinin must be used. 3. In areas with irrigation conditions, irrigation must be carried out to increase moisture, and where there is no irrigation cracking, drip irrigation or watering must be adopted to solve the problem of water shortage of garlic seedlings and ensure the demand for water for the growth and development of garlic with large slippery skin.

Reasons for the yellow leaves of garlic seedlings 1. Soil compaction(1) The yellowing of garlic leaves may be due to the fact that the potato number is resistant to soil and is too compacted, resulting in poor root respiration and affecting leaf growth. (2) At this time, the soil must be turned over for the plant immediately, so as to increase the air permeability and drainage of the soil, so that the nutrients and water can fully infiltrate. What medicine is used to treat the yellow leaves of garlic seedlings 2, lack of fertilizer (1) If there is a lack of ammonia fertilizer in the growth period of garlic, it will cause the old leaves to turn yellow, and the lack of potassium fertilizer will lead to dry branches and leaves.

2) Therefore, during the planting period of the plant, it is necessary to regularly observe its growth state, and carry out reasonable topdressing according to the actual situation to avoid excessive application of nitrogen fertilizer. 3. Water accumulation in the roots (1) Garlic is not suitable for growing in a too humid soil environment in spring, if it is usually watered too much, or the excess water is not discharged in time in the rainy season, it will lead to water rot in the root system, and the leaves will also appear yellow. (2) At this time, it is necessary to strengthen environmental ventilation and dry the moisture in the soil.