When the plant will wilt

Wilting When the water deficit is severe, the cells lose their turgor pressure and the stems and leaves droop. If the wilted plant can reduce or eliminate the water deficit and return to its original state after the transpiration is reduced, it is called temporary wilting;

Due to the lack of available water in the soil, the plant remains wilted after the transpiration is reduced, which is called permanent wilting. At this time, the root hairs wither, if the water supply is supplied in a short time, the root hairs can also be regenerated, otherwise the root system can not restore the water absorption function, so that the plant dies due to lack of water.

The result of overwatering that causes flowers to wilt is the fact that the leaves of all plants are wilting. In this regard, watering should be stopped and the soil should be loosened. In severe cases, depotting and cutting off rotten roots should be carried out and replanted with sandy soil.

The dehydration of flowers leads to the manifestation of wilting of flowers: yellowing of leaf tips and curled edges of leaves. The weather is dry and the potting soil is too dry.

In this regard, the potted flowers should be moved to a cool place, and after the temperature of the potting soil drops, water it thoroughly, so that the flowers can gradually recover. When watering, it is best to have a water temperature close to the temperature of the soil.

If some shade-loving flowers are not shaded well, or are exposed to strong direct light, the leaves of the plant will wilt and curl, and in serious cases, they will wither and fall off. For this, the flowers should be moved to the shade.

Fertilization is too strong. If the flowers are fertilized and cause the plants to wilt, they should immediately water more water into the pot to dilute the fertilizer concentration, and raise the pot so that the water can be quickly discharged from the pot hole. Potted plants that are seriously damaged by fertilizer should also be depotted and watered to their roots.

The results of the hard water quality leading to the wilting of flowers are: wilting of plants and alkalizing of the soil. At this time, it is necessary to switch to soft water to water the flowers, and the situation will improve.

Pest and disease damage. Pests in the soil bite the root system of the plant, affecting the root system to absorb water, causing the potted flowers to wilt. Potted flowers are invaded by wilt bacteria, and the roots and stem bases are rotted and damaged, and wilt occurs.

The old pile longevity flowers are luxuriant, why do the leaves wilt and droop?

Summary. Hello, dear, there are usually three causes of plant wilting: 1. Overwatering 2. Lack of water 3. Root pests and diseases.

Why do plants wither.

Hello, dear, there are usually three causes of plant wilting: 1. Overwatering 2. Lack of water 3. Root pests and diseases.

If the roots are soft and black, and have rotted, it may be that the roots are diseased, and check whether the roots have eggs or pests, and the larvae of some beetles such as weevils can also cause plant wilting.

It is possible that the plant is not suitable for the soil.

Related Notes:The transplanting period is determined according to the crop type, suitable seedling age and stubble, generally the leaf age index of rice is 40%-50%, cotton is transplanted with 2-4 leaves, and corn is the most suitable for 25-35 days after emergence.

When transplanting, it can be with soil or without soil, and transplanting with soil hurts less roots, which can shorten the seedling period and live early and emerge early. Before transplanting, water and moisten, so that it does not hurt the roots or has little damage to the roots. When transplanting, the row spacing is determined according to the planned specifications, and the transplanting depth is determined according to the crop type and seedling size, the general depth is about 3cm, and the depth is required to be consistent, and it is best to transplant the seedlings in different levels, and fertilizer and watering need to be applied in time after planting to promote survival and seedling growth.

Damaged roots: Improper transplanting can cause damage to the root system, causing wilting of the plant. Soil discomfort:

Plants planted in unsuitable soils inhibit root respiration and thus wilt. Root-crown imbalance: Without reasonable thinning of branches and leaves, the root-crown ratio is out of balance, resulting in wilting.

Improper seedling retardation: Failure to slow seedlings due to strong light, resulting in wilting.

1. The root system is damaged

The wilting phenomenon of newly transplanted plants may be due to improper operation during transplanting, resulting in damage to the root system, hindering the absorption of water by the roots and nutrients in the soil, and the insufficient supply of water and fertilizer, resulting in wilting and yellowing of the plants.

2. Soil discomfort

If the transplanted plant is planted in unsuitable soil, it will inhibit the respiration of the roots of the plant, thereby causing wilting, before transplanting, according to the needs of the plant, to allocate the appropriate soil, put it into a pot, spread a layer of soil at the bottom of the pot, let the plant be planted well, and finally covered and compacted with soil.

3. Root crown disorder

Plants are not properly thinned before transplanting, resulting in an imbalance in the root-crown ratio, and excessive water evaporation on the ground, resulting in wilting.

4. Improper seedling slowing

Improper management after transplanting plants, such as large temperature changes, excessive moisture content in the soil, and exposure to strong direct light, will lead to the failure of plant seedlings, resulting in wilting.

The diseased plants of Fusarium wilt are manifested as the whole plant withering, the root system is rotten, there is a pink mold layer on the stem at the base of the diseased plant, the base of the stem is dissected, and the vascular bundles are brown, such as the wilt of melon crops. In the diseased plants of Verticillium wilt, the diseased leaves turn from yellow to brown, and gradually wither and fall off from the bottom to the top, and the roots and main stems of the diseased plants are dissected, and the vascular bundles become brown, such as Verticillium wilt of eggplant.

The symptoms and control methods of Fusarium wilt are different for different hosts, and cucumber is introduced as an example.

Cucumber wilt disease, also known as vine cutting disease, wilting disease, is a worldwide disease, has occurred in all parts of China, especially cucumber in protected areas, due to continuous cropping year after year, the amount of bacteria in the soil has accumulated and increased year by year, and the disease has become more and more serious.

1. Harmful symptoms: cucumbers can occur throughout the growth period, and the disease is severe in the flowering, vine extraction and fruiting period. Most of the diseased plants began to show symptoms from the flowering and melon setting stage, the plant grew slowly, the lower leaves turned yellow, gradually developed upward, the leaves wilted at noon, and recovered at night.

After several days, the whole plant wilts and dies. Sometimes only a few branches of a plant at the beginning of the plant wilted, and then gradually spread to the whole plant, sometimes the main vine withered, and adventitious roots can grow on the base node of the stem, sometimes half of the plant is diseased, and half of the plant is healthy. The epidermis at the base of the stem of the diseased plant is mostly longitudinally lobed, and yellow-brown stripes appear on the nodes and internodes, and rosin-like gum often flows.

When wet, a white to pink mold layer grows. The base of the stem and the roots turn yellowish-brown and rot. Transverse cut of the diseased stem, and the vascular bundles can be seen to be brown.

2. Key points of diagnosis: see that the diseased plant is wilting, cut the root and stem ducts, and see yellow-brown or black-brown, and other diseases do not have this symptom.

3. Key points of comprehensive prevention and control of Fusarium wilt: 1. Prevent root injury. The pathogen invades from the wound of the host root and the end cells of the root hairs, grows in the parenchyma cells and between cells, and then invades the vascular bundles, develops rapidly in the ducts, secretes decomposition enzymes and enzymes, destroys the plant grooming tissue, makes the plant wilt, and the duct turns brown.

2. Reasonable fertilization. Pay attention to the increase of biological fertilizer, balance phosphorus and potassium fertilizer, and do not apply nitrogen fertilizer. When the farmhouse manure is used as base fertilizer, it must be rotted.

3. Adjust the pH of the soil. Acidic soil is conducive to the life and reproduction of pathogenic bacteria, and 120 kg (per mu) of quicklime can be appropriately plowed into the soil according to the pH of the soil. 4. Improve and activate the soil.

Increase the application of organic fertilizer and biological fertilizer, reasonable irrigation, high ridge cultivation, drip irrigation under the film, and enhance soil permeability. 5. Root irrigation control. Optional Elixirs:

Dual-effect, synergistic carbendazim, methyl liquphos, royal copper, cuprous oxide, agricultural anti-120, bacterium, amber. Ethyl aluminum. Zinc, Guangkulin (Oxamyl + Methyl Frost) and other agents.