What s the deal with sunflower rotten roots? Is there a cure for rotten roots?

The leaves and stems of sunflowers are succulent and tolerant to drought. Sunflower is also known as "sun-burning". I am not afraid of high temperatures, but I am afraid of the soil being wet and stuffy.

If you water too much, the sunflower is prone to root rot. The soil is drier and more conducive to growth. Stubble is to plant sunflower fields in previous years, and this year we will plant other crops.

Grow sugar vegetables, or potatoes. It takes at least two years for stubble to fall. If you plant sugar vegetables or potatoes for more than 3 years in a row, and then plant sunflowers, there will be no sunflower rotten roots, or rust, and whiteheads.

<> sunflower grows in the late stage of rainfall and high air humidity, the sclerotia carried by the seeds or the sclerotia accumulated in the soil will germinate and infect. Since the resistant flower disc of the aerial part of sunflower is the weakest, the sclerotinia sclerotinia type is the most harmful, followed by the root rot type. Germs can also survive for a few years on these things.

So when your field has a serious rot disease, it means that the number of germs is considerable, and one year of stubble may not be enough. The biggest advantage of this method is that it is low cost and incurs almost no direct costs.

Generally, the demand for soil is not very strict, but the soil used is not of high quality enough and is easy to compact, which will lead to poor drainage and ventilation, and it is easy to cause water to flow out, and the soil will be wet or have water accumulation for a long time, which is easy to cause sunflower root rot. Sunflower is very drought-tolerant, but not waterlogged, if it is often watered in the breeding process, the permeability of the potting soil is not good, then the roots are in a humid environment for a long time, there will be rotten roots.

Be sure to keep the sun sufficient, the sunflower can only be photosynthesized and grow healthily under the irradiation of the sun, and when the sun is not enough in winter, it can also be placed under the indoor light, so that it can also be supplemented with light. Although the sunflower does not have high requirements for soil quality, if it is planted on the spot and sown casually, it will grow well. However, if you need to choose loose soil with good air permeability, it will be conducive to future drainage.

To often loosen the soil for the sunflowers, use bamboo skewers and the like to poke in the gaps of the sunflowers.

Overwatering Sunflower root rot may be caused by overwatering, excessive fertilization is also one of the causes of sunflower root rot, sunflower root rot may also be caused by pests and diseases, after finding sunflower root rot, you need to stop watering, loosen the soil, and promote the discharge of stagnant water. It is also necessary to control fertilization.

The reason is that there is too much watering, and the recent sunlight has not been exposed enough time to evaporate, so the roots are rotten, and the method is to add the corresponding fertilizer to evaporate a lot.

Sunflower root rot may be caused by excessive watering, if you accidentally water too much when breeding sunflowers, the soil will be waterlogged, it will affect the respiration and growth of the roots, and the root rot will occur. At this time, it is necessary to loosen the soil in time, stop watering, and drain excess water as soon as possible.

In order to avoid the phenomenon of sunflower flowers rotting roots again, it is necessary to do a good job of maintenance and management. For example, keep it in a warm, sunny environment and be exposed to sunlight for 5-7 hours a day. Be careful not to place it in direct sunlight to promote the growth of strong roots.

Root rot is mainly caused by irrational irrigation, insufficient soil ventilation, and the threat of insect pests. When sunflower planting is applied to basal fertilizer, the organic fertilizer should be completely decomposed, the planting should be rotated, and pesticides should be sprayed to prevent insect pests.

Sunflower root rot** is the growth of hyphae on the sclerotia, which can infect the base of the stem, causing rot and forming black sclerotia. To solve the problem of root rot, it is necessary to harvest early in a timely manner, remove diseased plants in the field, prevent seedlings and prevent and control pesticides.

Sunflower rot disease is sclerotinia disease, which occurs very widely and the incidence is serious, which can cause sunflower stem break, flower disc and seed kernel rot, which poses a great threat to sunflower production, and there are four types of root rot, stem rot, leaf rot and flower rot, among which root rot and flower rot are seriously affected. The implementation of crop rotation, not with leguminous, solanaceae and other crops rotation, can be with gramineous crops rotation, planting plots and the previous sunflower field to keep a certain distance.

Sunflower root rot may be caused by overwatering, and after the potting soil is waterlogged, the roots cannot breathe and grow normally, and it is easy to rot the roots. Excessive fertilization, or the use of raw and thick fertilizers, can cause damage to the roots and cause root rot in the sunflowers. Pests and diseases are also one of the causes of sunflower root rot, and they should be sprayed in time after they are found**.

What is the reason for sunflower rotten roots 1, too much watering.

Sunflower rotten roots may be caused by too much watering, if you accidentally water too much when breeding sunflowers, the soil will be waterlogged, it will affect the respiration and growth of the roots, and the situation of rotten roots. At this time, it is necessary to loosen the soil in time, stop watering, and drain excess water as soon as possible.

2. Excessive fertilization.

Excessive fertilization is also one of the causes of sunflower root rot, do not use thick fertilizer and raw fertilizer when fertilizing, otherwise it is easy to make the roots hurt by fertilizer, resulting in rotten roots. If this happens, you need to repot it immediately and wash the roots.

3. Caused by pests and diseases.

Sunflower root rot can also be caused by pests and diseases, and placing sunflowers in a stuffy environment can easily lead to pests and diseases, and then cause damage to the roots and make the roots rot. At this time, it is necessary to spray the corresponding agent as soon as possible, and take out the roots and prune the rotten roots.

1. Replace the soil.

Reason: If the soil is not well permeable, it is not easy to drain the stagnant water. If there is water accumulation in the potting soil, the environment is stuffy, which can easily lead to root rot. How to solve the rotten section: replace it with loose soil with good drainage and permeability as soon as possible.

2. Carefully turn the pot.

Reason: Many flower lovers are not careful when turning the pot, and often hurt the roots of geraniums. Once the wound appears, coupled with the growth of bacteria, the roots will rot.

Solution: Be careful when turning the pot, try not to hurt its roots, and if it is accidentally injured, it should be disinfected in time.

3. Watering in moderation.

Reason: Too much watering can easily lead to stagnant water, and if the stagnant water cannot be drained, the roots will rot. Solve the Xinlichang method: reduce the amount of watering and control the frequency of watering. Before watering, it is a good idea to observe how moist the soil is. If it is dry, water it promptly.

Fourth, the prevention and control of pests and diseases.

Causes: If there are pests and diseases, such as nematodes, it is easy to cause root rot. Solution: If pests are found, spray chemicals in time to disinfect the potting soil. Then cut off the rotten roots, disinfect them and replant them.

Timely harvesting: grasp the harvest time, timely harvesting can also reduce the rot of sunflower cake, wait until the leaves have fallen, the sunflower stem turns yellow, and the sunflower seeds are already very hard when you can harvest, you can not wait any longer, otherwise the sunflower cake will rot immediately in case of bad weather or pests and diseases, resulting in a large reduction in yield. According to relevant data, the incidence of this disease is as high as 50% or even more than 80% in serious cases, which has a great impact on the yield and quality of sunflowers.

It is also called sunflower sclerotinia sclerotinia disease. It can occur throughout the growth period, and root rot is common.

First, because planting sunflowers, there is a big difference between early sowing and late sowing, which can make the seedlings avoid salinity. Second, spring sowing and summer sowing can be carried out during the growth period of the variety, and sowing can be adjusted during the sunflower disease law, which can well avoid the peak period of the disease. Disease-resistant varieties were selected, and phosphorus and potassium fertilizers were added to improve disease resistance.

Sowing late and moving the sowing date to late May, staggering the flowering period with the rainy season. The sclerotia can be buried below 7 cm in the soil layer by deep turning to reduce the occurrence of rotten head disease. Remove the diseased plants in the field, and pull out the diseased plants during the growth period, and burn or bury them in the soil; After harvesting, the remains of diseased plants should be picked out of the field and burned.

Harvest early in installments. After the beginning of September, the sunflower began to mature one after another, but due to different varieties, or uneven seedlings can cause the morning and evening difference between the mature plants, not very large, some even differ by 10-30 days, that is, the pure excellent varieties are also about 25 days apart, and the key to the loss of rotten disk is concentrated in the first half a month of maturity, deep turning and killing seedlings. Farmers with conditions can bury the sclerotia in the soil layer by deep turning 7 cm; Prevents sclerotinia from occurring.

In autumn, a one-time deep turning of more than 20 cm can control the germination and spread of sclerotia next year.

If the diseased plants are found, they should be removed from the field and burned in time, the diseased holes should be disinfected, and the roots should be irrigated with 400 times of 20% rust emulsifiable concentrate if necessary, and the effect is good.

1. The implementation of crop rotation, not with legumes, solanaceae and other crops, can be rotated with gramineous crops, planting plots and previous sunflower fields to adhere to a certain distance. 2. Select disease-resistant varieties and increase phosphorus and potassium fertilizers to improve disease resistance. Sowing late at the right time, the sowing date was moved to late May, so that the flowering period was staggered to the dry season.

After deep turning, the sclerotia can be buried in the soil layer below 7 cm to reduce the occurrence of rotten head disease. 3. Eradicate the diseased plants in the field, pull out the diseased plants during the growth period, and burn or bury them in the soil; After harvesting, the remains of diseased plants should be picked out of the field and burned.

Some pesticides should be sprayed. Some pesticides can prevent and control sunflower rot.

To prevent pests and diseases, and should also be watered more, fertilizer should be increased, that can prevent rot disease, and the effect is particularly significant.

This work should be done well in the early stage, and it is necessary to carry out sunlight exposure every day, do a good job of drainage work in a timely manner, and water and fertilize every day.

Geraniums like to grow in a dry environment, geraniums do not like a humid environment, even in the dry winter do not water too much, if the soil is too wet will cause a lot of geraniums to grow, rotten root problems, in addition to geraniums need to grow in a sunny place, due to insufficient light in winter, so special attention should be paid to this when breeding. In addition, too wet soil will also cause geranium root rot, the next step is to sort out the geranium root rot control methods and the causes of geranium root rot, how to deal with it.

Analysis of the causes of geranium root rot

Overwatering causes geraniums to rot their roots

Watering too much leads to water accumulation in the pot; The environment is hot and stuffy, and the roots do not breathe well; Pests and diseases infestation, gnawing on the roots of the royal companion ascending part; Improper fertilization, burning roots. Any inappropriate behavior in conservation will cause root rot. The point is not to analyze the cause, but to find a way to avoid it.

Prevention and control of geranium root rot

1. Choose the right soil

The quality of the soil determines the root growth of geraniums, and sandy loam soil rich in humus, good drainage and good permeability is selected. The roots grow robustly, are less resistant, and will not rot easily if they are not properly maintained in time.

2. Be careful with repot transplantation

Geraniums are repotted or repotted in the autumn of each year, which is the cause of extensive damage to the roots. Therefore, when operating, the shovel should be far away from the root system to avoid cutting the root system, knowing that every wound is fatal to the plant.

3. Water properly

Correct watering is the key to preventing root rot, usually do not water more, spring and autumn growing season can be properly watered a little more, but the potting soil can not accumulate water. In summer, when the temperature is high, the watering should be strictly controlled, and the potting soil is not very dry, try not to water, especially at noon, watering will damage the plants. In addition, in the rainy season in many places, the potting soil can not be rained for a long time and too damp, and it can be irrigated by rainwater, but pay attention to the amount.

4. Pest control

Nematodes are the main insect pest causing geranium root rot. When planting, it is best to use artificial media such as perlite and vermiculite stone, or disinfect the soil. And the old and found that the diseased plant was uprooted and burned in time.

Reason: If the soil is not permeable, the stagnant water is not easy to discharge, and the stagnant water in the potting soil coupled with the hungry and stuffy environment will easily lead to root rot.

Solution: Replace it with loose soil with good drainage and air permeability as soon as possible.

Reason: Many flower friends are careless when turning the pot, and often hurt the roots of geraniums.

Solution: Be careful when turning the pot, try not to hurt its roots, and disinfect it in time if you accidentally hurt it.

Reason: Watering too much can easily produce stagnant water, and if the stagnant water cannot be discharged, it will cause the roots to rot.

Solution: Reduce the amount of watering, control the frequency of watering, it is best to observe the wetness of the soil before watering, and water it in time if it is dry.

Reason: The appearance of pests and diseases, such as nematodes, can easily lead to root rot.

Solution: After discovering insect pests, spray them with pesticides in time and disinfect the potting soil. Then cut off the rotten root beams, disinfect them and replant them.

If you want to comment on the best plants to grow, many people think of sunflowers. However, some people find that the sunflower leaves they grow are wilting, so some people are overwhelmed. In fact, they can be salvaged if reasonable measures are taken.

So what to do if sunflower leaves wilt? Below, we will go into detail about the reasons for each and how to deal with it.

What to do if the leaves of the sunflower wilt in the wide stockings.

There are two conditions for sunflower leaf blight: one is cotyledon blight. There is no need to worry about this situation, because the wilting of the cotyledons is normal and detailed.

It will eventually be absorbed and atrophied. A leaf that grows between two leaves. is normal growth and does not require **; The second situation is leaf wilting during the growth period, at this time, we should know what to do if the sunflower leaves wilt, analyze the cause, and solve it in a targeted manner.

1.The planting method is normal.

If we are sure that there is no problem with our planting method, then there are three main types of dead leaves at this time: leaf blight, over-dense planting, and insufficient nutrients. Measures need to be taken in response to these three situations.

1.Leaf blight.

Symptoms: Round spots appear on the leaves, initially 2-4 mm in diameter, grayish-white in the middle, brown on the margins, then gradually expand in range to 5-20 mm, brown spots appear on the petioles and stems.

Cause: Caused by germs, which can spread when temperatures are high.

Solution: What if this happens and causes sunflower leaves to wilt? Spray with carbendazim at first, pay attention to environmental hygiene, clean up the wilted plants, loosen the soil on other sunflowers.

2.Planted too densely.

Symptoms: The leaves of dwarf sunflowers wilt, and other plants with plenty of light are normal.

Reason: Too densely planted.

Solution: What should I do if the sunflower leaves wither due to planting too dense thoughts? A more scientific way to transplant wilted sunflowers elsewhere is to plant a single sunflower in a pot and avoid multiple sunflowers squeezing into one pot.

3. Insufficient nutrition.

Symptoms: The edges of the leaves are wilted, the old leaves begin to fall off, and the new leaves can grow normally.

Cause: Nutritional deficiencies.

Through our introduction, I believe you have a deeper understanding of what to do if sunflower leaves wither, what to do when potted sunflower leaves wither.