How to treat yellowing of daylily leaves?

The yellowing of daylily leaves is due to a lack of magnesium. Daylily lacks magnesium and cannot synthesize chlorophyll, and the leaves will naturally turn yellow, so it is good to supplement magnesium fertilizer.

First, the water is poured too much.

Enoki is more drought-tolerant and is afraid of stagnant water, so if you water too much, a lot of water will flood the roots, causing it to be unable to breathe, which will make it yellow. In this case, it is necessary to drain the water in time, and at the same time, it is necessary to loosen the soil properly and improve air circulation, which can accelerate the evaporation of water and allow the soil to dry down as soon as possible.

2. Lack of nutrients.

Enoki requires certain nutrients during the growth process, and if the fertilizer is insufficient, the leaves of the plant will also turn yellow. Therefore, in addition to applying sufficient base fertilizer when planting, it is also necessary to properly apply Bika water-soluble fertilizer during its growth period. When germinating, the seedling fertilizer should be applied, and when it is sprouting, it should be supplemented with sprout fertilizer.

The third application is when it is pregnant with buds.

3. Insufficient light.

The growth of enoki is inseparable from sufficient light, and if the environment is too dark, the plant will not be able to photosynthesize, which will cause the leaves to turn yellow. Usually be sure to put it in the sun, if you plant it in the ground, you need to plant it in a sunny place, if it is planted in a greenhouse, you can use a fill light to supplement the light.

4. Leaf spot.

If enoki is suffering from leaf spot, the disease will damage its leaves, which will also cause it to turn yellow. In this case, it is necessary to cut off the diseased leaves in time, and at the same time to destroy them intensively to cut off the possibility of its transmission. After that, spray a little Bordeaux liquid**, and also pay attention to ventilation to avoid illness**.

The yellowing of daylily may be due to lack of water, so timely replenishment of water, proper watering can be, or it may be insufficient nutrients, then it is necessary to apply some nitrogen fertilizer, it is recommended to apply sea and Weihai meal high nitrogen large element water-soluble fertilizer to help daylily grow, alleviate the yellowing phenomenon, if the environment is dark, timely replenishment of light can be, if it is leaf spot disease, spray some Bordeaux liquid.

Since daylily can be harvested for many years, seedling fertilizer must be applied in the later stage, and the earlier the seedling fertilizer is applied, the better. We generally use a mixture of high-efficiency nitrogen fertilizer, phosphate fertilizer and potassium fertilizer for seedling fertilizer.

The daylily leaves are yellow, how can you treat me? Plate anti-leaf yellow medicine.

Hello. In your case, it may be that the seedlings are not neat due to too much watering, and the leaves of the seedlings are yellow.

Cauliflower is a semi-hardy vegetable with strict water requirements. Cauliflower prefers humid environments, is not drought tolerant, and has a weak ability to tolerate waterlogging.

When there is too much water, the permeability of the soil is reduced, the oxygen content decreases, which affects the growth of the root system, and in severe cases, it may cause the plant to wither and yellow. The suitable soil moisture is 70%-80% of the maximum water holding capacity and the relative humidity of the air is 80%-90%. Your substrate is obviously too wet, it is recommended that you water to see dry and wet, watering should not be too frequent, wait for the substrate to dry and water thoroughly, do not water again after the substrate is thorough, and wait for the substrate to dry before watering.

Cauliflower seedlings. At the same time, it is necessary to increase the light time of seedlings and bask in the sun more, but the light intensity should not be too high. In addition, it is advisable to select seeds with high purity and clarity for sowing, and adult seeds can not be used, and seeds with low purity and low bud potential not only have uneven seedlings, but also the yield and quality of flower bulbs will be seriously affected.

Some foliar fertilizers can be used, which have high utilization rate, good effect and fast absorption.

The main reasons for the yellowing of cauliflower rotten roots and curly leaves are as follows:

1.Generally caused by root rot, the disease mainly infects the roots, in the early stage of the disease, the taproot or fibrous root of the plant turns yellow, there is no obvious symptom in the aboveground, and the disease expands significantly in the future, the leaves of the aboveground part droop at noon, and recover in the morning and evening, when the taproot is seriously damaged, the base of the stem atrophies, and after a few days, the root is yellow-brown wet rot, and the aboveground part is wilted and dies.

2.Cauliflower black rot. Symptoms:

The disease can occur from seedling to adult stage. The seedlings become diseased, and the cotyledons are water-stained and die quickly. It occurs at the adult stage, mainly harming the leaves, first from the leaf edge, forming a "V" shaped lesion that expands inward, with yellowish brown and pale yellow edges; The roots are damaged, the vascular bundles turn black, the inside is dry rot, and the whole plant wilts and dies when the disease is severe.

Control methods: seed selection and seed treatment: select disease-free plants to retain seeds; Before sowing, soak seeds in 50 warm water for 20 minutes, or soak seeds with 1000 times of agricultural streptomycin for 2 hours. During the live broadcast, you can use 50% Fumei double according to the weight of the seeds.

Strengthen field management: rotation of severely diseased plots.

Sow seeds in a timely manner, apply enough Bika granular fertilizer, drain water in time after rain, avoid drought and waterlogging, and remove the initial diseased leaves in time, completely remove the diseased residues during harvest, and reduce the source of initial infiltration in the field.

Pharmaceutical prevention and control: timely drug prevention and treatment in the early stage of the disease, can be used 200 10-6 agricultural streptomycin solution, or 100 10-6 neophytomycin solution, or 60% chlorothalonil wettable powder 600 times solution, or 1 1 200 to 1 1 240 times Bordeaux solution, or 77% can kill wettable powder 500 times solution. The above agents can be used alternately to obtain good control effect.

The dry and yellowish edge of the cauliflower may be due to the excessive use of potassium fertilizer during maintenance, resulting in leaf malnutrition, or it may be that the plant receives too much light or lack of water in the process of growth, or it may be that the soil where the cauliflower is planted is compacted, resulting in damage to its roots and unable to provide nutrients for the leaves.

1. Improper fertilization: The edges of cauliflower leaves are dry and yellow, which may be due to improper fertilization. Lack of potassium fertilizer in the leaves will cause yellowing, but a single provision of potassium fertilizer for the plant will lead to an imbalance in the nutrients absorbed by the cauliflower, resulting in the phenomenon of yellowing of the leaves, so in the later maintenance of cauliflower, it is necessary to provide nutritionally balanced nitrogen, phosphorus and potassium mixed fertilizer.

2. The edges of the cauliflower leaves are dry and yellowish due to too strong light, which may also be due to too strong light. Cauliflower is suitable for growing in a sunny environment, but the plant is afraid of the sun, if it is exposed to strong light, it will cause the cauliflower leaves to be burned and yellow, so in the later maintenance, it can only provide full sunshine for the cauliflower in spring and autumn, and can only provide sunshine in the morning in summer.

3. Lack of water: The edges of cauliflower leaves are dry and yellow, which may also be due to lack of moisture. Cauliflower has a greater demand for water in the process of growth, and if there is a long-term lack of water, it will cause the leaves of the plant to turn yellow and dry, so in the later stage of maintenance, it is necessary to provide water for the cauliflower in time when the soil is dry.

4. The soil compaction of the soil for planting cauliflower will cause damage to the roots of the plant and cannot provide nutrients for the leaves, resulting in the phenomenon of dry and yellowing of the leaves, so in the process of later maintenance, it is necessary to loosen the soil for cauliflower every other month to improve the air permeability of the soil. When fertilizing cauliflowers, inorganic fertilizers can also be used in combination with Trim organic fertilizers to avoid soil compaction.

The cauliflower leaf edge is dry and yellow, which may be due to the excessive use of potassium fertilizer during maintenance, and the cauliflower is suitable for growing in a sunny environment, and the cauliflower loosens the soil once to improve the air permeability of the soil. When fertilizing cauliflower, inorganic fertilizer can also be used in combination with well-rotted organic fertilizer to avoid soil compaction.

If the cauliflower is sticky and has a rotten taste, it is not edible. If you use a knife to cut off the surface of the cauliflower to reveal white fresh noodles, it can still be eaten. Cauliflower, or cauliflower, is a cruciferous vegetable that is a variant of cabbage.

The head of cauliflower is a white inflorescence, similar to the head of broccoli. Cauliflower is rich in vitamins B and C. These ingredients are water-soluble and easily lost due to thermal decomposition, so boiled cauliflower should not be cooked at high temperatures and is not suitable for boiling.

The original Mediterranean coast, its product organs are white, short, fat flower buds, flower branches, flower shafts and other polymerization of flower balls, is a kind of crude fiber content is less, the quality is fresh and tender, the nutrition is rich, the flavor is delicious, people like to eat vegetables.

The causes of yellowing of vegetable leaves include root problems, nutritional problems, and insect pests, which can be controlled according to the problems. The details are as follows:

1. Root problems

One of the most common reasons is that plants rely on their roots to grow and absorb nutrients, and if there is a problem with the roots, the natural plants will not grow. The mild manifestation is yellowing, and when it is more severe, it may begin to slowly wither and die.

Do not use a lot of fertilizer, pay attention to a cold protection work, for example, the root system is not very developed, or if the roots are very shallow, it is difficult to overwinter.

2. Unbalanced nutrition

For crops, it is necessary to pay attention to sufficient ** to achieve a state of equilibrium between supply and demand. However, many people are prone to misunderstandings in the use of fertilizers, such as using a lot of those large elements, thinking that the effect is more obvious, and ignoring some small elements will easily cause yellowing.

Pay attention to the nutrition of plants, especially the ** of small elements, which will reduce the yellowing.

3. Caused by disease

There are also a lot of diseases that plants can be infected with, sometimes it seems that they are okay on the surface, but in fact, those diseases are all in the plants, harming the root system of plants, and slowly causing the plants to turn yellow.

Before planting, be sure to disinfect the land to a certain extent, and pay more attention to it in normal times. If there are insects, pay attention to the use of pesticides, this should be proportioned according to the regulations, and the ratio is too strong to make the crops yellow.

Disease symptoms of yellow leaf disease of cabbage vegetables

Chinese cabbage, small cabbage, and yellow leaf diseases such as cabbage and yellow sprouts occur from north to south. Onset is seen at the seedling stage. After the seedlings are set or planted, the growth is slow, half of the leaves fade green, causing half or the whole plant to wilt, as if lacking water, pulling out diseased plants, few fibrous roots, cutting the taproot, vascular bundles.

Browning. After the rosette to the early stage of the center, the leaves begin to yellow, and enter the middle stage of the center, the old leaves fade and turn yellow between the veins, and the veins around the veins remain dark green, and the posterior leaf margins lose water and shrink and curl inward, causing the plants to shrank or die.

The above information refers to Encyclopedia - Yellow Leaf Disease of Cabbage Vegetables.

The yellow cabbage leaves may be due to insufficient fertilizer and water.

Compound fertilizer and organic fertilizer can be added. and spray brassinin appropriately.

Brasssin, also known as brassinolide.

It is a new type of plant endogenous hormone, which is recognized as a high-efficiency, broad-spectrum and non-toxic plant growth regulator.

Strong osmosis, fast internal absorption, at very low concentrations, can significantly increase the growth of plant nutrients and promote pollination. It can effectively increase chlorophyll.

content, improve the efficiency of photosynthesis, promote root and seedling growth, flower and fruit preservation; Improve the resistance of crops to cold, drought, salinity and alkali, and significantly reduce the occurrence of diseases; And it can significantly alleviate the occurrence of pesticide damage, make crops quickly resume growth, and can eliminate disease spots.

Brassinolide is a new type of green plant growth regulator, which is treated by soaking with suitable concentration of brassinolide and spraying on stems and leaves. It can promote the growth of vegetables, melons, fruits and other crops, improve quality, increase yield, bright color and thicker leaves. It can also make the leaf picking time of tea earlier, and can also make melons and fruits have higher sugar content, larger individuals, higher yields, and more resistant to storage.

The plant growth regulator on the pesticide market is synthesized sodium nitrate.

and brassin. In practical application, the quality of brassin naturally extracted from the imperial preparation is the best, the comprehensive economic benefits are better, and it can be welcomed and applied by farmers. Zhenshan does not matter which type of plant hormone it belongs to.

It is harmless to humans and animals, and the normal use of doses is very effective.

Natural brassins can be widely used in food crops.

For example, rice, wheat, and potatoes can generally increase the yield by about 10%; It is applied to a variety of cash crops.

If trees, vegetables, strawberries, melons and fruits, cotton and linen.

Flowers, etc., can generally increase the yield by 10 to 20%, and can reach 30% high, and can significantly improve the quality, increase the sugar and fruit weight, and increase the flowery flowers. At the same time, it can also improve the drought resistance and cold resistance of crops, and alleviate the symptoms of crop pests and diseases, pesticide damage, fertilizer damage and frost damage.

It is recognized by the academic community as a class 6 plant hormone. It can be used for field crops, fruits, vegetables, flowers, etc. It has multiple functions such as strong rooting, promoting growth, raising seedlings, strengthening seedlings, protecting seedlings, turning yellow leaves into green leaves, promoting the expansion and early maturity of fruit fruits, reducing diseases and alleviating pesticide damage, coordinating nutritional balance, drought and cold resistance, and enhancing crop stress resistance.

The first aid effect on the phenomenon of dead seedlings, rotten roots and cataplexy caused by heavy stubble, disease, pesticide damage, frost damage and other reasons is significant, and the application is obvious and effective after 12 to 24 hours, and it can quickly recover its vitality. It is suitable for food crops, cash crops, vegetables and fruits, etc., to promote growth, make fruit bulking agent, and increase yield.

The ratio of brassinin to water should be judged according to the concentration of brassin. The concentration of brassin, every 5 to 8 milliliters needs to be mixed with 30 catties of water. The concentration of Yuntai, per 15 ml of brassin, is mixed with 30 catties of water.

Reasonable use can have a better effect. Brassin is a highly effective, non-toxic growth regulator that promotes better plant growth even at low concentrations.

Daylily is a relatively common plant in many mountainous areas in the south. It has a very long history of cultivation in our country, as a native plant of our country, as early as the Wei, Jin, Southern and Northern Dynasties, it has begun to grow and eat daylily, but at that time it was called "daylily".

Daylily is a perennial herbaceous plant belonging to the lily family, daylily, and the edible part is mainly its flowers. When it is not open, the flower is like a spindle, but when it blooms, the petals are large, beautiful, and basically yellow. Because it can be eaten as a vegetable, it was later commonly called "daylily" by the folk.

This plant has a strong vitality, it can tolerate both barrenness and drought, and there is no requirement for the soil in which it grows, and daylily has been grown in many places in the south in the past, generally in some relatively poor land. Sometimes it is planted directly around the crops, and there are even many wild ones in the mountains.

And daylily planting basically does not need to worry much, there is no need to use any pesticides after planting, and the yield is not low. Because it has a long flowering period, it blooms from June to late autumn, and the flowers bloom one after another.

And the best part is that daylily is still a perennial plant, even in the winter its stems and leaves on the ground wither and die, and in the spring of the next year, the flowers bloom and grow leaves again, so it is a very worry-free vegetable, which is why many farmers in the past liked to grow it.

After all, there were not many types of vegetables that could be eaten at that time, and daylily could be stored for a long time after drying.

Is fresh daylily really poisonous and not to be eaten?

When it comes to daylily, there is one problem that is inseparable, that is, fresh daylily is poisonous and cannot be eaten. Is this true?

Although it is true that it is rare to see people selling fresh daylily in the market, fresh daylily is indeed edible, but it should not be eaten too much.

Because fresh daylily is poisonous, this is a true thing, but it is not too toxic. Daylily contains a certain amount of colchicine, if the amount is consumed too much, it will cause some people to experience dizziness, headache, nausea and vomiting and other symptoms, and these are the symptoms of daylily poisoning.

The ancients should have discovered this a long time ago, and fresh daylily is very resistant to storage, so it will be picked back, and then steamed, dried, which can not only destroy the toxicity of daylily, but also after drying daylily can also be easy to transport and store.