Why corn blooms but doesn t have a cob

The reason why the corn blooms but doesn't have a cob could be:

1.Malnutrition: Corn plants lack essential nutrients, such as nitrogen, phosphorus, potassium, etc., which may lead to dwarf plants and affect the development and dispersal of pollen, thus affecting the setting of corn cobs.

2.Too high or too low temperature: Corn flowering and cob setting need the right temperature, if the temperature is too high or too low, it will affect the development and dispersal of pollen, which will affect the cob setting of corn.

3.Pests and diseases: Corn is attacked by pests and diseases, which will affect the growth and development of plants, which in turn affects the setting of corn sticks.

4.Planting too densely: impermeable and poor air permeability between rice plants will cause the differentiation of corn ears to be blocked, resulting in stunted growth, and then forming the phenomenon of non-sticking.

5.Drought and lack of water: Insufficient moisture can affect the growth and development of corn and may lead to non-sticking.

6.Obstruction of flowering period: During the flowering period of corn, drought or rainy weather will affect the normal pollination of corn, and insemination cannot be completed, and finally the phenomenon of non-stick formation will be formed.

Further analysis and investigation are required to determine the specific cause. It is recommended to take corresponding measures to solve the problem, such as timely soil testing, ensuring that the plants can obtain sufficient nutrients, watering and keeping the soil moist in a timely manner, paying attention to the occurrence of pests and diseases, and controlling environmental factors, so as to provide good growth conditions for the normal growth of maize.

If necessary, artificial pollination can be carried out during the corn heading and flowering period, generally at 9-11 o'clock in the morning, pollination while pollinating, repeating 2 3 times.

This is the caseIt is mainly caused by water imbalance。There was drought and no rain before and after maize tasseling, which led to the flowering of male ears and the silking stage of female ears moving forward or delayed, and the flowering stages of female ears and male ears did not meet. In rainy weather, the male spike can not bloom normally, and some pollen swells and cracks or bonds into clumps and loses vitality, which affects the normal progress of pollination and fertilization. If the planting density is too large, the ventilation and light transmission in the field are poor, the growth and development of corn is stunted, and the panicle differentiation is blocked, it will cause a lack of rows and grains.

1. Seed reason Put the seed reason in the first place, it is very important to explain that when buying corn seeds, buy fake seeds, old seeds, and varieties that are not suitable for local planting, there may be no sticks, so from the beginning it has entered the pit of no harvest, and how to manage it in the later stage. Solution: When buying corn seeds, choose varieties that have been planted in the local area for several years, and try new varieties cautiously, and ask for invoices or receipts to avoid not acknowledging when problems occur.

2. Planting too dense rice plants is impermeable to wind and poor air permeability, which will cause the differentiation of corn ears to be blocked, resulting in stunted development, and then forming the phenomenon of non-sticking. Solution: How many catties of corn per mu, the planting density is not the same, specific detailed data, you can click below to learn more.

What happened to the corn that has not yet come out of smallpox?

Hello, I'm glad to answer for you, what happened to the corn out of smallpox and not out of the cob whiskers? There are the following reasons: 1. Seed cause chain leakage Put the seed reason in the first place, it is very important to explain that when buying corn seeds, buy fake seeds, old seeds, and varieties that are not suitable for local planting, there may be no sticks, so from the beginning it has entered the pit of no harvest, and it is not possible to manage it in the later stage.

Solution: When buying corn seeds, choose varieties that have been planted in the local area for several years, and try new varieties cautiously, and ask for invoices or receipts to avoid not acknowledging when problems occur. 2. Planting too dense rice plants is impermeable to wind and poor air permeability, which will cause the differentiation of corn ears to be blocked, resulting in stunted development, and then the shed will rot into a phenomenon of not forming sticks.

3. Drought and lack of water The period when corn needs water is the big flare period, if there is drought and little rain during this period, and no irrigation is carried out, it will greatly affect the extraction of the male ear, and the serious case will lead to the death of the male ear, and then the amount of pollen will be greatly reduced. Solution: In case of drought, timely irrigation, without irrigation conditions, can be sprayed outside the roots.

4. The flowering period is blocked During the flowering period of corn, drought or rainy weather will affect the normal pollination of corn, and insemination can not be completed, and the phenomenon of non-sticking will be formed. Solution: If there is water accumulation in rainy weather, it is necessary to drain it in time, and if the drought continues, you can refer to the solution in the previous point.

Why is it that a corn field that is growing well has not produced a single cob? 5. Pest and disease damage Because of pests and diseases, it is rare to cause a large area of non-sticking phenomenon, unless it is an extreme pest and disease year, which generally occurs in a small area, but everyone will go to prevent and control them every year, so the above four situations are the mainstay. Workaround:

Corn borer, corn armyworm, large spot disease, small spot disease and other pests and diseases, very good to control, there are many pesticides on the market, the cost of an acre of land is not large, the big empty brother family should not be in order to save trouble and not to prevent.

Dear, I will inquire for you: the corn has not yet come out of smallpox, and the mustache is due to the lack of nutrition during the corn ear differentiation period, and the temperature is not suitable. If the temperature before and after heading is higher than 35, the corn pollen will be killed, which will affect fertilization, and cause the closed branches to fail to set fruit normally.

The temperature is lower than 16 in the late stage of grain filling, which affects the accumulation of dry matter and causes grains. Moisture imbalance. From the big bell mouth to the flowering stage is the critical period of corn water demand, this period of water shortage and drought, people call it "stuck neck drought".

"Stuck neck drought" will cause the male panicle to be pulled out slowly or the male ear to dry up and die, resulting in flowers. In rainy weather, Zheng Min's male ears cannot bloom normally, and some pollen swells and cracks or bonds into clumps and loses their vitality, which affects the normal progress of pollination and fertilization. The planting is too dense, the field ventilation and light transmission are poor, the growth and development of corn is stunted, and the panicle differentiation is blocked, resulting in lack of rows and grains.

Possible causes of short corn plants:

1.Nutritional deficiencies.

When corn lacks nitrogen, phosphorus, potassium or copper, it may cause corn plants to be short and grow slowly.

2.Drug damage. When using nicosulfuron to control weeds, the pesticide should be applied before the 4-leaf stage of corn, not more than 5 leaf stage at the latest, otherwise, single or mixed use will produce pesticide damage, the symptoms are corn plants are short, but stout, the leaf color is dark green, the heart leaves are wrinkled and curled and hardened, and the jointing is difficult to pull out the heavy pesticide damage, or can not pull out the joint.

3.There are too many weeds in the field.

In the corn field with serious weeds, the corn plants are short, the root system is not developed, the growth is poor, the leaf color is yellow, the ears are smaller, the empty grain rate increases, the grain weight is reduced, and the seedlings wilt and die when it is serious.

4.Nematode diseases.

There are two main mechanisms by which nematodes damage corn roots: one is mechanical damage; The second is chemical action, which damages or kills root cells by secreting enzymes or injecting enzymes, reduces the ability of roots to absorb and transport water and nutrients, destroys the normal function of roots, stops root growth, leads to poor plant growth, and reduces yield with plant rent fading or other nutrient deficiencies. After nematodes damage corn roots, they not only reduce plant vigor and affect growth, but also weaken resistance to other diseases, form necrotic spots or galls and deform, dwarf and green plants.

5.Corn root rot.

Corn root rot can occur from the seedling stage to the ear stage of maize, which is mainly manifested as the gradual browning, softening and rotting of the mesocotyl and the whole root system, the root growth is seriously hindered, the plant is dwarfed, the leaves are yellow, and the seedlings die.

6.Dwarf mosaic disease of corn.

Corn dwarf mosaic disease can be susceptible to the disease and damage during the whole maize growth period, and the damage is serious when it is covered at the seedling stage. At the seedling stage, oval green dots or markings appeared between the veins at the base of the heart leaf, which were arranged into intermittent strips of different lengths along the leaf veins, and gradually extended to the whole leaf, and the mesophyll tissue lost green and turned yellow, forming obvious yellow-green stripe symptoms. The new leaves are particularly noticeable, starting from the tips and margins of the leaves, with purplish-red streaks appearing and finally drying up.

Generally, the first diseased leaf loses green belt along the leaf edge from the leaf base upwards into an inverted figure-of-eight shape, and the diseased leaves that appear in the upper part are all the leaves, that is, the whole becomes a flower leaf. The susceptible early and severe disease plants are significantly dwarfed, and they cannot be drawn from the male and set ears or die in advance. After the seedlings with poisonous seeds are unearthed, the leaves are pale green or yellow-green, and gradually appear to be flowers and leaves composed of a large number of dark green patches or dots, and the diseased seedlings are generally shorter than the healthy seedlings.

7.Corn roughness disease.

Rough shrinkage disease can occur in the whole growth period of maize, and the susceptibility is the strongest at the seedling stage. The symptoms of the disease generally appear in the 5 6 leaf stage, the leaf color of the diseased plant is dark green, the leaves are stiff and brittle, the width is short and thick, the internodes are thick and short, the heart leaves are white and green can not be normal, and the clusters are like junzi orchid, which can not be stretched, and even rot and die. Transparent dotted green streaks appear on the thin veins on both sides of the main vein of the heart lobe.

As the plant grows, clear waxy tear-like lines of different lengths can be seen on the veins on the back of the leaf, called the veins. Internodes become thicker, shorter, and markedly dwarfed. The male panicle axis is obviously shortened after the severe disease plant is not tasseled or the male panicle axis is significantly shortened, the male flowers are underdeveloped, the fruit spike is small, the fruit spike is deformed and does not bear fruit or there are very few grains.

It is very likely that the plant is deficient in nutrients, so nitrogen and potassium fertilizers should be supplemented in time to promote the growth of plant rhizomes, regular watering and pruning.

The common pests and diseases of corn at the flowering stage are Yuran Zhihui rice borer, aphid, corn double-spotted firefly leaf beetle, armyworm and leaf spot, powdery mildew and other pests and diseases, resulting in premature aging of functional leaves.

Corn is drought, lack of fertilizer, nutrition can not keep up, corn can not "plug in the shuttle"; Resulting in no sticks.

Summary. Hello, glad for your question.

The reasons why corn comes out first are as follows:

1. In the process of planting corn, if the environment is suitable, it will grow sprouts in about a week, and gradually grow in about two months, corn will bloom and grow filaments, and then it will produce corn cobs after pollination.

2. Therefore, corn is a plant that blooms first and then bears a cob, generally speaking, corn will bloom after about two months of planting, and soon after flowering, the female and male flowers will pollinate and gradually grow corn cobs, and its filaments will gradually fall off.

3. For those who have planted corn, they all know that the position of flowering and fruiting is different, which is the monoecious phenomenon of plants. The male inflorescence of corn grows at the top of the plant, while the female inflorescence grows in the middle of the plant, that is, about one meter from the ground, which is more conducive to corn pollination and fertilization, that is, the pollen falls down and falls on the female flower.

Why did corn come out first.

Hello, I'm glad that the reason for your problem corn is that the corn is defeated first and the cob is as follows: 1. In the process of planting, if the environment is suitable, the corn will grow sprouts in about a week, and gradually grow in about two months, the corn will bloom and grow filaments, and then it will produce corn cobs after pollination. 2. Therefore, corn is a plant that blooms first and then bears a cob, generally speaking, corn will bloom after about two months of planting, and soon after flowering, the female and male flowers will pollinate and gradually grow corn cobs, and its filaments will gradually fall off.

3. For those who have planted corn, they all know that the position of flowering and fruiting is different, which is the monoecious phenomenon of plants. The male inflorescence of corn grows at the top of the plant, while the female inflorescence grows in the middle of the plant, that is, about one meter from the ground, which is more conducive to corn pollination and fertilization, that is, the pollen falls down and falls on the female flower.

Hope mine was helpful to you, remember 5 star praise.

1. Planting too dense corn is too thick, resulting in poor ventilation and light transmission after growth, and also affecting photosynthesis, which in turn leads to poor growth and development of corn and the phenomenon of not forming sticks. 2. The pollination probability is low, sporadic or linear planting reduces the probability of pollination leakage from female flowers, corn is the same plant and different flower crops, the male flowers are on the top, the female flowers are on the bottom, and the pollination distance is far. 3. Drought and water shortageIn the corn trumpet stage, if there is drought and water shortage, it will lead to the sluggish extraction of male ears or the drying up and death of the male ears, resulting in a great reduction in pollen amount and male and female imbalance.

If the female and male ears do not meet during the flowering period, they will naturally not produce corn cobs. 4. During the flowering period, it rains continuously during the flowering period, resulting in the panicle can not bloom normally, and some pollen swells and cracks or bonds into a clump and loses its vitality, which affects the normal progress of pollination and fertilization, and cannot complete insemination normally. 5. Diseases and insect hazards in the corn flower and grain stage, such as corn borer, aphids, armyworms and leaf spot, powdery mildew and other pests and diseases, if not prevented and controlled in time, it will lead to premature aging of corn functional leaves, and will also increase the empty grains of corn, and seriously form empty ears.

6. The seeds bought by fake seeds are fake seeds, and this reason is placed in one place, which is very important, so you must ask for an invoice or receipt when buying seeds.

Summary. Dear, there is flowering but no fruit.

Dear, there is flowering but no fruit.

1.Nutrient deficienciesWhen corn is deficient in nitrogen, phosphorus, potassium or copper, it may cause corn spring bench plants to be short and grow slowly. 2.

When using nicosulfuron to control weeds, the pesticide should be applied before the 4-leaf stage of corn, not more than 5 leaf stage at the latest, otherwise, single or mixed use will produce pesticide damage, the symptoms are that the corn plant is short, but stout, the leaf color is dark green, the heart leaves are wrinkled and curled and hardened, and the jointing is difficult to pull out the heavy pesticide damage, or can not pull out the joint. 3.In the corn field with too many weeds in the ground, the corn plants are short, the root system is not developed, the growth is poor, the leaf color is yellow, the ears become smaller, the empty grain rate increases, the grain weight is reduced, and the seedlings wilt and die when it is serious.

4.Nematode disease: nematode damage to corn roots has two main mechanisms: one is mechanical damage; The second is chemical action, which damages or kills root cells by secreting enzymes or injecting enzymes, reduces the ability of roots to absorb and transport water and nutrients, destroys the normal function of roots, and stops root growth, resulting in poor growth of plants, accompanied by plant fading or other nutritional deficiencies and reducing yield.

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