What s the matter with the yellowing of carob seedlings?

Poor plant growth. This situation will not cause the plant to die, mainly because the plant is not growing well, resulting in yellowing in the middle of the middle and lower leaf veins, which is easy to cause premature senescence of the plant.

It is very likely that the seedlings are deficient in nutrients. Nitrogen and potassium fertilizers should be supplemented in time to promote the growth of plant rhizomes and regular watering.

It may be a symptom of deficiency, and the symptoms of different element deficiencies and the prevention and treatment methods are as follows

Nitrogen deficiency: the plant grows poorly, the leaf color is light green, the leaves are small, the lower leaves first age and turn yellow or even fall off, and then gradually move upward, covering the whole plant; There are few sitting pods, and the growth and development of pods is stunted. Prevention and control methods:

Apply fresh organic matter (crop straw or organic fertilizer) as a base fertilizer, preferably nitrogen or fully decomposed compost.

Phosphorus deficiency: the leaf color at the seedling stage is dark green, hard and dwarf; At the pod-setting stage, the lower leaves are yellowed, and the upper leaves are small and slightly upward. Prevention and control methods: phosphorus is particularly needed at the seedling stage, and special attention should be paid to increasing phosphorus fertilizer; Apply enough organic matter fertilizers such as compost.

Potassium deficiency: In the early stage of carob growth, the leaf margin appeared slightly yellowing, and the order was first the leaf margin, and then the yellowing between the leaf veins, and the order was obvious. The leaf margins die, and as the leaves continue to grow, the leaves curl outward. Prevention and control methods:

Apply adequate potassium fertilizer, especially in the middle and late stages of growth; When symptoms of potassium deficiency appear, fast-acting fertilizers such as potassium sulfate should be applied immediately.

Calcium deficiency: the plant is short, premature aging, and the vegetative growth of the stem end is slow; The lateral root apex is dead and appears as a nodulous protrusion; The veins of the parietal lobe are pale green or yellow, the young leaves are curled, and the leaf margins turn yellow and lose green before dying inward from the leaf tips and leaf margins; The apical bud of the plant is necrotic, but the old leaves are still green. Prevention and control methods:

If the soil calcium is insufficient, increase the application of calcium-containing fertilizer; Avoid using large amounts of potassium and nitrogen fertilizers at once; It should be watered at the right time to ensure that there is enough water.

Magnesium deficiency: The green color between the veins of the lower leaves gradually turns yellow during the growth and development of carob, and further develops, except for the green of the residual points of the leaf veins and leaf margins, the leaf veins are yellow and white. Prevention and control methods:

If the soil is deficient in magnesium, sufficient magnesium-containing fertilizer should be applied before cultivation; Avoid applying excessive amounts of potassium, nitrogen, and other fertilizers at one time, which hinder magnesium absorption.

The yellowing of carob seedlings may be due to the lack of light received by carob seedlings in the process of growth, resulting in the inability of the plant to grow normally, or it may be that the water and nutrients provided to carob seedlings during maintenance are improper, resulting in poor plant growth, and it may also be that carob seedlings suffer from diseases in the process of growth, resulting in yellowing of leaves.

This phenomenon is because the pests have eaten nutrients, and they need to apply some insecticides to kill those pests.

The yellowing of carob seedlings is mostly caused by three reasons. One is the soil problem, which should be mixed with an appropriate amount of farm fertilizer; Second, the density of planting is too large, and the density is too large, and the inside can not be well ventilated and transmitted; The third is the lack of trace elements, mostly caused by iron deficiency and zinc deficiency, which should be supplemented in time.

One is the soil problem, during the management period of long-term application of chemical fertilizer, the soil is easy to compact, will hinder growth, easy to yellow. It should be doped with an appropriate amount of farmhouse fertilizer. The second is that the density of planting is too large, and the density is too large, and the inside can not be well ventilated and transmitted, and there will be poor growth after a long time.

The third is the lack of trace elements, mostly caused by iron deficiency and zinc deficiency, which should be supplemented in time.

Beans are one of our common vegetables, and it is the period when they are on the market in spring and summer, but during the growth of beans, many farmers have reported that the leaves of the beans are yellow, which seriously affects the growth of the beans. So what is the cause of yellow bean leaves? How can it be prevented?

1. Symptoms.

There are generally two cases of carob yellow leaves, one is that the bottom leaves are yellow, which is easy to fall off, and it will also expand upwards, resulting in the phenomenon of dead trees. There is also a yellowing phenomenon of new leaves at the top, which will also be accompanied by the phenomenon of falling flowers and fruits; There is also a relatively rare phenomenon that the tree will not die when planted, but the leaf veins that love it will yellow.

2. Causes.

There are three main reasons for the yellowing of bean leaves, one is infected with root rot, which is a disease transmitted through the soil, the bacteria infestation the root system in the early stage, resulting in poor plant growth, the bottom leaves gradually turn yellow, the plant will wilt during the high temperature and strong light period at noon, recover sooner or later, and finally die. The second is the lack of trace elements, the yellowing of the top leaves is caused by iron and zinc deficiency, and the top new leaves are sometimes caused by sudden sunshine after rain or cold and warm climate changes. When the leaf veins are yellow, there is a poor growth of the plant, which will not cause dead trees, mainly caused by high temperature, poor root growth, and insufficient fertilizer and water.

3. Prevention and control methods.

For carob root rot, a combination of physical control and pesticide prevention can be adopted, combined with land preparation during planting, the soil is disinfected and sterilized to eliminate pathogens, and carbendazim can be used to irrigate the roots at the time of onset, and the effect is better.

For the lack of trace elements, organic fertilizer can be applied as basal fertilizer, the content of soil organic matter, improve soil fruit, supplement the plant with trace elements, and supplement the lack of trace elements through foliar fertilizer in the later stage, which can alleviate the yellowing of leaves. For the yellowing of the leaf veins, it is necessary to reasonably water and apply water-soluble fertilizer to the fertile leaves, enhance the resistance of the plant, and make the root system grow strongly, so as to avoid the yellowing of the leaf veins and lead to premature leaf aging.

There are many reasons for the yellowing of carob leaves, and the following answers are based on personal experience for your reference:

1. It may be carob root rot. The disease mainly affects the roots and base of the stem, which invades from wounds. The disease is severe when there is high temperature and rain, water accumulation in the field, and high humidity.

At the beginning of the disease, water-stained reddish-brown spots appear on the diseased area, which later turn dark brown or black-brown, slightly depressed or cracked; The taproot is rotten or necrotic, the lateral roots are scarce, the plant is dwarfed, and it is easy to pull out. In severe cases, all the taproots rot and the stems and leaves die. When wet, pink mold appears at the base of the stem.

In addition to the prevention and control of seedlings, reasonable crop rotation, and scientific fertilization, pathogens should also be cleaned up in a timely manner. For pesticide control, 70% methyl tropic 1000 times liquid or 75% chlorothalonil 600 times liquid can be sprayed on the stem base, sprayed once every 7 10 days, sprayed 2 3 times; Or irrigate the roots with 200 300 times of aqueous solution, 500 600 times of 60% anti-mold treasure wettable powder, 800 1000 times of 70% dixone wettable powder, 300 times of root rot, etc., once every 10 days, a total of two times.

2. Lack of fertilizer. It is best to give human feces and urine supplements.

3. The density is too large, and the yellow leaves are caused by lack of ventilation.

What is the reason for the yellow leaves of carob seedlings.

1. Root rot is a disease transmitted through the soil, the carob seedlings are infected with root rot, the pathogen invades the root system of the carob seedlings in the early stage, resulting in poor plant growth, the bottom leaves gradually turn yellow, and the plants will wither during the high temperature and strong light period at noon, recover sooner or later, and finally die.

2. Lack of trace elements, the yellowing of the top leaves is caused by iron and zinc deficiency, and the yellowing of the new leaves at the top is caused by the sudden sunshine after the rain, the cold and warm climate and the old changes or too many early plant fruits.

3. When the leaves turn yellow, it may be caused by poor plant growth, mainly caused by high temperature, poor root growth, insufficient fertilizer and water, etc., which will not cause dead trees.

Prevention and control method of yellowing leaves of carob seedlings.

1. Carob root rot can be prevented and controlled by irrigating the roots with medicinal filial piety agents, and the following agents can be selected: carbendazim, formabime (allicin), oxazalin, copper pine acid, etc.

2. For the lack of trace elements, organic fertilizer can be applied as basal fertilizer, the content of soil organic matter, improve soil results, and supplement the seed trace elements for the coincidental Kai plant, and some foliar fertilizers can be sprayed in the middle and late stages of the development of carob seedlings, such as trime amino acid foliar fertilizer, with elemental fertilizers such as boron-containing calcium, magnesium, iron, zinc, etc., which has a significant effect on reducing the yellowing of the upper leaves.

3. Foliar fertilizers, such as amino acids, can be sprayed in bad weather and in the middle and late stages of plant growth, which can effectively alleviate the yellowish-white color of the new leaves at the top.

4. For the yellowing of leaves, it is necessary to water and fertilize reasonably to enhance plant resistance, cultivate strong roots of plants, and use fertilizer reasonably to prevent the yellowing of leaf veins and cause premature senescence of leaves.

For example, potassium deficiency, the edge of the leaf is yellow, dry, and the jujube is withered, and the leaf vein base is dismantled and yellow, and the leaf flesh is still green. The root system develops slowly, and the aboveground parts also grow and wither slowly. Potassium dihydrogen phosphate is recommended.

Summary. The yellowing of carob seedlings may first be due to the insufficient light received by carob seedlings during their growth, resulting in the inability of the plants to grow normally.

The yellowing of carob seedlings may first be due to the insufficient light received by carob seedlings during their growth, resulting in the inability of the plants to grow normally.

It may also be due to improper water and nutrients provided to carob seedlings during maintenance, resulting in poor plant growth.

It may also be that the carob seedlings suffer from diseases during the growth process, resulting in yellowing of the leaves.

The yellowing of carob seedlings may be due to the lack of light received by carob seedlings in the process of growth, resulting in the inability of the plant to grow normally, or it may be that the water and nutrients provided to carob seedlings during maintenance are improper, resulting in poor plant growth, and it may also be that carob seedlings suffer from diseases in the process of growth, resulting in yellowing of leaves.

1. Insufficient light.

Carob seedlings are suitable for growing in a sunny environment, insufficient light will lead to poor growth of carob seedlings and yellowing of leaves, so it is necessary to provide suitable light for the plants when maintaining carob seedlings in the later stage, so that carob can photosynthesize normally, and when the light is too strong, it is necessary to shade the plants in time to avoid strong light burning the beans.

2. Overwatering.

Beans have a greater demand for water in the process of growth, but providing water for beans too often will cause the beans to fail to grow normally and the leaves will turn yellow, so it is necessary to provide an appropriate amount of water for the plants when maintaining the beans in the later stage, soak all the soil, and provide a more humid growth environment for the beans.

3. Improper fertilization.

Beans are suitable for growing in a more fertile environment, but a single provision of nitrogen fertilizer for beans will cause the leaves of carob to turn yellow, so in the later maintenance of carob, it is necessary to provide nutrients for the plant reasonably, and it is best to provide nitrogen, phosphorus and potassium compound fertilizer for the carob, so that the plant can absorb balanced nutrients and make it grow more vigorously.

4. Suffering from diseases.

If the carob suffers from disease in the process of growth, there will be symptoms of yellowing of the leaves, so it is necessary to use sharp scissors to cut off the yellowed leaves on the carob plant in the later stage of maintenance, and it is also necessary to spray the fungicide regularly for the carob plant to eliminate the bacteria on the plant and make the beans grow better.

The yellowing of carob seedlings may be due to the lack of light received by carob seedlings in the process of growth, resulting in the inability of the plant to grow normally, or it may be that the water and nutrients provided to carob seedlings during maintenance are improper, resulting in poor plant growth, and it may also be that carob seedlings suffer from diseases in the process of growth, resulting in yellowing of leaves.

1. Insufficient light.

Carob seedlings are suitable for growing in a sufficiently sunny environment, and insufficient early sunlight will lead to poor growth of carob seedlings and yellowing of leaves, so it is necessary to provide suitable light for the plants when maintaining carob seedlings in the later stage, so that carob can carry out photosynthesis normally, and when the light is too strong, it is necessary to shade the plants in time to avoid strong light burning the beans.

2. Overwatering.

Beans have a greater demand for water in the process of growth, but too often provide water for carob Lahui, which will cause carob to fail to grow normally and yellowish leaves, so it is necessary to provide an appropriate amount of water for the plant when maintaining carob in the later stage, soak all the soil, and provide a more humid growth environment for carob.

3. Improper fertilization.

Beans are suitable for growing in a more fertile environment, but a single provision of nitrogen fertilizer for beans will cause the leaves of carob to turn yellow, so in the later maintenance of carob, it is necessary to provide nutrients for the plant reasonably, and it is best to provide nitrogen, phosphorus and potassium compound fertilizer for the carob, so that the plant can absorb balanced nutrients and make it grow more vigorously.

4. Suffering from diseases.

If the carob suffers from disease in the process of growth, there will be symptoms of yellowing of the leaves, so it is necessary to use sharp scissors to cut off the yellowed leaves on the carob plant in the later stage of maintenance, and it is also necessary to spray the fungicide regularly for the carob plant to eliminate the bacteria on the plant and make the beans grow better.

How to remedy the yellowing of carob seedlings, this is due to the serious compaction of the soil, and the poor aeration and permeability of the soil dust liquid, resulting in the growth of the root system of the carob seedlings being hindered, the seedlings are yellow, and the plants are short. Remedy: First of all, imitate the cultivated loose soil, break the soil compaction, so that the root system can breathe normally and promote the growth of the root system.

Second, the seedling fertilizer is raised, combined with cultivation, and 20 kg of compound fertilizer is applied per mu. Three-grip foliar spray fertilizer, foliar spray with potassium dihydrogen phosphate solution, spray 23 times, each time with an interval of 7 days. Hope it helps.