Why do peanuts often rot their roots during the rainy season?

Early sowing, low ground temperature, reduced seed enzyme activity, weakened respiration, slow emergence of flower buds, prolonged soil retention time after deep sowing, reduced seed disease resistance, increased probability of seed disease, and easy to die seedlings and rot roots. The survey showed that the lack of seedlings in early sowing and deep sowing fields was more serious than that in late sowing and shallow sowing fields. A large number of pests and diseases have accumulated in the soil of peanut continuous cropping, and the number of pests and diseases is large.

Plots without seed dressing or pesticide application are frequent, which is another major cause of dead seedlings and root rot. Use chemical fertilizers, immature fertilizers, chemical pesticides, etc. , direct contact with seeds or excessive use, easy to cause seeds to burn and rot; Excessive use of herbicides, uneven spraying leading to excessive local doses, or residues of herbicides used in the previous crop can also lead to the occurrence of pesticide damage and the death of seedlings.

The field should be cultivated carefully to ensure that the land is flat and loose, and there are no major fractures. In the land with severe continuous cropping, some microbial fertilizers should be applied along with the cultivated land. When using chemical fertilizers as seed fertilizer, the seed fertilizers should be separated to prevent seed burning.

The watering should be sufficient and even, the sowing depth should be consistent, about 3 cm is appropriate, and the covering soil should be tight. For weeding in peanut fields, herbicides should be used in strict accordance with the instructions, and the dosage should not be increased or the scope of use should not be expanded without authorization. Wheat and peanuts after wheat fields should be applied herbicides before winter, and compound herbicides should be used as much as possible to avoid excessive dosage of a single herbicide variety to cause harm to peanuts.

Avoid herbicides containing metsulfuron-methyl, chlorsulfuron-methyl, etc. Herbicides should be sprayed evenly and should not be missed or repeated.

The selection and use of fertilizers and pesticides is a key part of the cropping industry. Farmers often encounter problems with poor fertilizer use and insect infestations that lead to reduced harvests during the planting process. This phenomenon also applies to peanut farming.

If the merchant chooses pesticides and fertilizers improperly, it will lead to insufficient nutrient absorption of peanuts and eventually root rot. It is recommended that merchants carefully understand the characteristics of their peanut varieties before fertilization, and reasonably choose fertilizers and pesticides according to these characteristics to reduce the root rot rate and increase the total harvest. Peanuts are planted too early or too late, peanuts are planted at a high density, and so on.

Farmers made serious mistakes in choosing the time to plant peanuts, causing a conflict between the temperature and humidity of the land during the period, resulting in peanut root rot.

Personally, I think that during the rainy season, the reason why peanuts often have rotten roots is because there is too much rain, which causes their roots to fester.

Peanuts are suitable for planting in dry sandy soil, and the rainy season rains frequently, and the soil has too much moisture, which is no longer suitable for the growth requirements of peanuts, so peanuts will have root rot.

Nutrient loss. July and August of each year is the time when the precipitation is the most, this time is also the period when peanuts absorb nutrients most vigorously, and at this time there is waterlogging in the peanut field, coupled with exposure to the sun after precipitation, it will cause a large loss of trace elements in the soil, and the trace elements absorbed by peanuts will be reduced.

Peanut root rot is divided into: water stains and root rot. Before sowing peanuts, the seeds were coated with 10% Shile, and the roots were irrigated with 1000 times of Lvheng No. 1 or No. 2 after the onset of the disease.

It is also possible that the gutter system has poor drainage.

There is a certain impact, and whether the specific impact is serious depends on the amount of rainfall. <> if there is only a light rain after watering, then there is no need to worry about the rain having a bad effect on the germination of peanuts. On the contrary, this situation may also have good results.

However, if the rainfall is relatively heavy, it is necessary to pay attention to the problem of water accumulation in the peanut field. Because if too much rainwater cannot be discharged in time, it will have a great impact on peanuts, so we must clear the ditch and drain it in time. Moreover, after the rain stops, the hoe should be properly rowed to reduce the moisture in the soil and avoid being soaked for a long time.

Generally speaking, after planting peanuts, even if we encounter rainfall problems, it is not very large, because during the season when we plant peanuts, the rainfall is generally not very large, and it will not lead to a large amount of water accumulation in the peanut field. <>

If there is heavy rainfall and it lasts for a long time, it may wash away the peanut seeds that have just been planted, and there is also a high risk that the soil moisture content will be too high, causing the seeds to rot. At this time, it is necessary to take timely rescue measures, carry out timely drainage and irrigation, properly loosen the soil after the rain stops, cover the fine sandy soil again, strengthen the field inspection time from time to time, and replant in time if there is a problem after the emergence of seedlings. Excessive rain is also extremely detrimental to peanut seedlings, as rain can cause soil to sink or compact, affecting seed depth and germination efficiency.

Seedling fertilization is a very important remedy, watering dilution urea fertilizer can promote the growth of seedlings, fertilization to fertilizer and water combination several times, to avoid yellow leaves and dead seedlings and other situations. <>

Peanut planting is mainly based on sowing, seedling transplanting, and direct planting, which have their own advantages, but peanut sowing has certain requirements for temperature and moisture. When sowing, the soil temperature should not be too high, about 12, and the relative humidity is about 80%. Low temperature, high temperature, and high humidity will slow germination, and may also cause seeds to deteriorate and rot.

In general, peanuts are not suitable for large areas when sown, they are rarely watered in spring, and watering peanuts in summer is mainly to reduce soil temperature. It takes about 4 months from sowing to harvesting peanuts, and most of them are sown in spring and summer.

If there is too much rain, it is likely to cause moldy seeds, and if the temperature drops, it will also affect the growth of peanuts.

It will affect the reaction of peanuts, and it will also affect the growth of peanuts, which can make peanuts grow faster, and can also help peanuts germinate faster, which may cause peanut seeds to be soaked and rotten.

This situation will cause the phenomenon of water accumulation, which is not conducive to the growth of peanut roots, and will have an impact on peanuts.

There is too much rain and a large area of peanuts has rotten roots and dead seedlings, what should I do at this time?

First, the main reason for the rain and peanut rotten seedlings is that the peanut varieties are not good enough, can not be sown on the spot, the planting time is too early, low temperature leads to rotten seeds, and too much moisture leads to rotten seedlings. Peanuts are a warm and drought-tolerant variety. If the planting temperature is too low, planting in low-lying areas will rot seeds or seedlings will rot and the seedlings will not be pulled, because it is caused by the physical environment and not fungal infection, so it is not contagious.

In order to prevent further deterioration and expansion of rotten seedlings, only heating and dehumidification can be done. We can improve air circulation by shoveling loose soil to evaporate as much water as possible. In short, peanut varieties are better, and the planting time should not be too early.

Peanuts can only be planted after a long summer in western Liaoning. Choose fertile land with no stagnant water and sand as the best soil quality.

2. Advance prevention.

1.Prevent it in advance. For peanut growers, every month, we must always pay attention to the weather forecast, understand the weather and precipitation in advance, and dredge the flower fields in time to avoid water accumulation in the peanut fields.

Secondly, ridge cropping can promote drainage, increase soil surface temperature, and reduce the impact of rain on peanut growth, so as to ensure peanut yield.

2.This is top dressing. In many cases, we can't advance the amount of precipitation, or the low-lying terrain can't avoid waterlogging, so we should apply trace element fertilizer in time after waterlogging to avoid affecting the growth of peanuts due to the loss of trace elements.

Bian Xiao recommends top dressing combinations to farmers. After soaking in water, 50 grams of Tianqing fulvic acid liquid trace element fertilizer plus 50 grams of Yiyekang, and 15 kg of water were added to spray foliar sprays. Pay attention to the morning and evening 5:

Post-00 spraying can timely supplement the trace elements required by peanuts, improve the resistance of peanuts, promote the development of peanut needle pods, and still increase the yield of peanuts after waterlogging.

3.Loosen the soil in time: After the peanut field is flooded, you will find that a lot of the land is easy to compact.

At this time, we must pay attention to loosening the soil and flower field in time, which can promote the respiration of peanut roots and promote the absorption of nutrients. However, when loosening the soil, we must pay attention to avoid damaging the peanut roots, otherwise it will cause a decrease in peanut pods and lead to a reduction in yield.

In addition, we should pay attention to finding the cause of the real rotten seedlings to prevent such a phenomenon from appearing in the future, so as to pick better quality seeds when sowing. Try to do a good job in field management to ensure that peanut seedlings thrive.

At this time, the soil should be treated well, all the rotten seedlings should be found and taken out of the field for incineration or deep burial in the field, and timely drainage should be carried out to prevent rainwater from entering, or top dressing should be effectively supplemented.

At this time, we must do a good job of drainage and irrigation, so that the water collected on the soil can also be discharged in time, and it can be shielded above the peanut seedlings to avoid a large amount of rainwater from entering the soil again.

We are now in a critical period of peanut growth, but some farmers find that the peanuts they grow are dead, what is the reason for this? How can it be prevented?

Too much rain causes peanuts to be flooded and soaked for a long time, resulting in problems such as root soaking, rotten roots, dead seedlings, and lack of growth in the root system of crops. In this case, it is necessary to analyze the specific situation of peanuts. Crops with mild root damage can be recovered by using some microbial agents with humic acid water-soluble fertilizer that promotes root growth and root protection.

If the situation is more serious, it is necessary to first carry out deep ploughing to reduce the water content in the soil, increase the nutrient content in the soil, and then increase the use of microbial agents and humic acid water-soluble fertilizers.

Primary drainage:Drain water as soon as possible, and directly use a pump or trench to reduce the soaking time of stagnant water; Fields that have been seriously damaged should be cleared in a timely manner.

If the root system is damaged and easy to lodging, it should be manually straightened in time after drainage, and the silt on the surface of the crop should be carefully rinsed with clean water. At the same time, rotten leaves and residual leaves should be pruned and organized. For crops that can still grow after the disaster, such as eggplant and pepper, properly prune the dense branches and leaves to reduce the burden on the plant and prevent wilting caused by physiological disordersFor melon vegetables, remove the old yellow leaves at the root.

Pest control:After the waterlogging, the weather becomes clear, when the humidity in the fields is high and the weather temperature is high, which is the best time for the high incidence of pests and diseases. Coupled with the weakening of the plant, it is easy to cause serious damage and even extinction.

Major farmers should prevent and control crops and pests and diseases in a timely manner according to their own crops. Prevention and control should be based on prevention, and highly toxic pesticides should not be used to avoid pesticide damage.

Gold Returns Foliar Spray Wet:As an environmentally friendly fertilizer synergist, slow-release agent, and plant nutrition promoter, after more than ten years of comprehensive test statistics, it has been popularized and applied in more than 60 kinds of crop soils in more than 20 provinces, municipalities and autonomous regions such as Henan, Hebei, Shandong, Jiangsu, Shanxi, Liaoning, Heilongjiang, Shaanxi, Xinjiang, Yunnan, etc., and is one of the most direct, effective, fastest and most ideal products for reducing and increasing efficiency, green agriculture, increasing yield and income, soil remediation, and diseased soil treatment.

The main reason for peanut seedlings with a lot of rain is that the peanut varieties are not good enough to be sown on the spot, the planting time is too early, the seedlings are rotten at low temperature, and the seedlings are rotten with too much water. Peanuts are a warm and dry-tolerant variety. If the cultivation temperature is too low, it is not necessary to pull out the rotten seeds and seedlings when cultivating in low ground.

Because it is not a fungal infection but a physical environment, it is not infected. In order to prevent further deterioration and expansion of rotten seedlings, we can only heat and dehumidify, and we can improve the air circulation environment by loosening the soil and evaporate as much water as possible.

In short, peanut varieties are better, and the cultivation time should not be too early. Peanuts can be planted in the summer in western Liaoning, and fertile land is selected, with no stagnant water and sediment as the highest soil quality. Secondly, in addition to removing the dead seedlings of these rotten roots in time, which does not necessarily affect the good occurrence of survival, we must also really look for the cause of the rotten seedlings, do not happen again in the future, and ensure that the best seeds are selected when sowing.

Try to do a good job in field management to ensure the prosperity of peanut seedlings.

Root rot and dead seedlings caused by soil quality problems, serious soil crusting, and root rot caused by insufficient organic matter, the main seedlings in the early stage of the species are weak, and dead seedlings appear in the later stage, which are mainly caused by environmental problems, mainly in two aspects. First, it encounters continuous rainy days in the early stage, or the soil moisture is too high, the soil air tightness is poor, and it takes root.

The other is that the weather is too dry, and the roots are weak, causing diseases, in order to prevent the dead seedlings from rotting, it is recommended to dry them in the sun before sowing. It can effectively kill the germs in the seed belt.

In addition, it is possible to mix peanut seeds. It can also be made with imidacloprid or chlorpyrifos, with fungicides and vegetative growth regulators, which can make peanut seedlings Qi, seedlings strong and seedlings evenly improve the disease resistance of peanuts. Prevention and control of root rot caused by pathogenic bacterial infection, such as stem rot, root rot, and bacterial wilt.

After peanut emergence and before flowering, 50% carbendazim wettable powder 500-600 times solution or 70% thiophanate-800 times solution 72% Streptomyces pesticide.

At this time, this problem can be solved by spraying pesticides, spraying insecticides, turning soil, spraying nutrient solution and pruning seedlings.