Why do tomatoes only bloom and don t set fruit? How to manage to keep the results?

There are many reasons why only tomatoes bloom and bear fruit, such as insufficient nutrients, improper use of hormones, high temperatures, etc. High temperatures during the growing period will accelerate the growth of seedlings, and insufficient nutrient supply will cause tomatoes to not bear fruit. In addition, when using hormones, if the amount is too large or too many times, the growth will be accelerated, and the imbalance of nutrients will also affect fruit set.

Tomato flowers are hermaphroditic flowers, one flower has pistils and stamens, and it is a self-pollinating plant, and tomatoes cultivated in the open field are pollinated by wind bees, so there is no need to worry about pollination.

However, if tomatoes are planted on closed balconies, the method of pollination needs to be considered. Solution: Close the tomatoes planted on the balcony, and when they bloom, it is a good solution to use a hair dryer to cool the tomato flowers in the air.

Alternatively, brushing the flowers with a clean brush (cotton swab) can also help with pollination. The plant becomes larger, the leaves are large, the joints are long, and the stems are thick. It could be rain, high temperatures, and unbalanced nutrients that caused the tomatoes to grow excessively.

Therefore, in the case of rapid vegetative growth and insufficient reproductive growth of tomato, adjustment of tomato plants is essential for the tomato management process.

Among them, over-exuberance has the greatest impact on tomatoes, because over-exuberance may affect the flowering and fruit setting of plants, and then affect the yield of tomatoes. Tomatoes do not bear fruit when they bloom alone. There are many reasons such as insufficient nutrients, improper use of hormones, high temperatures, etc.

High temperatures during the growing period will accelerate the growth of seedlings, and insufficient nutrient supply will cause tomatoes to not bear fruit. In addition, when using hormones, if the amount is too large or too many times, the growth will be accelerated, and the imbalance of nutrients will also affect fruit set.

Cultivated tomatoes only bloom and do not bear fruit, probably because they are not pollinated. Tomatoes are home-pollinated plants, but pollination becomes difficult due to rain and poor ventilation, with neither insect pollination nor wind. Therefore, during the tomato flowering period, if the environmental conditions are poor, artificial pollination can be carried out.

Simply pluck the male flowers and apply pollen to the stigma of the female flowers.

Pollination in rainy weather or in poorly ventilated environments can lead to pollination failures, resulting in plants that only bloom and do not bear fruit. Lack of light: Tomatoes love light and are suitable for growing in sunny places.

If there is less light, it will lead to insufficient nutrients in plants and flowers will not bear fruit. Improper temperature: Temperatures that are too high or too low can also cause tomatoes to bloom and not bear fruit.

It is recommended to keep it at 20-30 during the day and 15-20 at night. There are many reasons why tomatoes only bloom and do not bear fruit, including nutrient deficiencies, improper use of hormones, excessive temperature, etc.

If the temperature is high during its growth period, the seedlings grow too fast, and the nutrients are insufficient, and the tomato will not be able to sit still. That is, too much or too often the use of hormones will accelerate its growth and affect the fruit because of the imbalance of nutrients. Tomatoes have the functions of quenching thirst, strengthening the stomach and eliminating appetite, clearing heat and relieving heatstroke, tonifying the kidney and diuretic.

It can be used for ailments such as fever, thirst, loss of appetite and overheating. It has significant hemostasis, antihypertensive and cholesterol-lowering effects, and has special effects on hemophilia and boils.

Eat more tomatoes to protect your heart. A study by American scientists has shown that organic tomatoes grown with farm fertilizer can protect your heart. Organic tomatoes contain twice as many antioxidant flavonoids as regular tomatoes.

Flavonoids have the effect of lowering blood pressure, lowering blood lipids, and increasing coronary blood flow. The tomatoes that are grown only bloom and do not bear fruit, which may be caused by a lack of powder. Although tomatoes are self-pollinating plants, they are pollinated due to the absence of insects.

There is also no wind in rainy weather or poorly ventilated environments, so pollination is difficult. So during the flowering period of tomatoes, if the environmental conditions are not good, artificial pollination can be carried out. The male flowers are picked and pollen is applied to the stigma of the female flowers.

During tomato breeding, if the plant is infected with leaf blight or gray mold, it will cause its leaves to wilt and turn yellow, so that the plant will not bear fruit. It is necessary to prepare sharp scissors for disinfection, cut off all the leaves of tomato seedlings with serious infection to prevent the situation from worsening, and spray carbendazim on tomatoes for disinfection and sterilization.

Tomato flowers are wind-borne flowers that rely on the wind to pollinate. Therefore, if tomatoes only bloom but do not bear fruit, we should consider whether it is in the flowering period and the lack of wind leads to poor pollination. In the case of poor pollination of tomatoes due to less wind, the tomato planting area is in a leeward zone, or a relatively closed place, resulting in a lack of wind and little wind during the flowering period.

1.Shake the plant for pollination. It is by shaking and shaking the flowering tomato plants that the pollen can be more fully contacted and disseminated, and the pollination is successful.

When operating, it is necessary to pay attention not to use too much force, so as not to cause damage to branches and leaves, and the gains outweigh the losses. 2.Use a brush for pollination.

It is to prepare a brush and then apply it to the center of the flower, and wipe it to create opportunities for pollen. This completes the pollination.

It's most likely due to a lack of light. It is recommended to maintain sufficient sunlight and also fertilize scientifically to keep the temperature within the appropriate range.

Several situations: (1) Insufficient light and excessive temperature. When the temperature is high, especially at night, tomatoes will grow rapidly, the stalks will be jointed quickly, the joints will be long, and it will not be easy to set fruits.

2) Improper nutrients. If too much fertilizer is applied to tomatoes, especially nitrogen-containing fertilizers, the plant will absorb too much nutrients, and the plant will easily grow too vigorously.

3) Hormonal effects. Using fast-acting foliar fertilizers, which may contain certain hormones that promote growth, can cause tomatoes to grow too quickly, resulting in nutritional imbalances and plant growth.

4) High temperature affects flower bud differentiation. According to the results of the study, the high temperature of tomatoes in the flower bud differentiation period will affect the normal differentiation of flower buds of tomatoes, and the inflorescence abortion and fruit inability to point or fail to complete normal pollination will cause flowers or abnormal fruit development.

The first is to improve the use of fertilizers. It should be noted that starting from the base fertilizer, the proportion of nitrogen fertilizer should not be too high, the amount should not be too large, if there is more manure in the base fertilizer, other nitrogen fertilizers can not be applied. After planting, if the seedlings grow vigorously, top dressing should be suspended and the supply of potassium fertilizer should be increased accordingly;

The second is to pay attention to night temperature control. After discovering the vigorous growth of the sprouts, attention should be paid to controlling the greenhouse temperature, especially the night temperature should not be too high, widening the temperature difference between day and night, and controlling water and fertilizer, and then strengthening fertilizer and water management after the first and second ears of fruit sit firmly;

The third is hormone control. When the plant grows vigorously, it can be sprayed with 1500 times of chlormequat mixed love and 2000 times more.

The high temperature environment causes the plants to grow. Nutrient imbalance The organic nutrients produced by the leaves are mainly ** stems and leaves lead to insufficient nutrients and emaciation of flower buds. Especially when the shade is excessive, the plants are in a high temperature and low light environment, and it is more likely to have no fruit set.

Tomatoes do not set fruit and fertilizer has a lot to do with fertilizer, when the soil lacks potassium fertilizer, the fruit setting rate will be reduced, or the nutrients in the soil are too single, which will also affect fruit set.

Tomatoes do not make fruits, which may be caused by a lack of water or fertilizer that cannot keep up, so find a way to water more or eat more fertilizer.

There are many reasons why tomatoes don't bear fruit. It depends. If the flower is not pollinated well, it will not produce fruit. That is, if the weather is dry and flooded. They don't set fruit. Therefore, it can only be determined after the field visit.

Symptoms of tomato unable to sit on fruit: some tomatoes can only sit on a small number of fruits in one ear; or some flower buds are incompletely differentiated; Some flowers only differentiate sepals, but do not differentiate the pistils and stamens of good flowers.

Nutritional deficiencies, generally speaking, the flowering period is the same, if it is not enough, the flowers will not get nutrients, and there is a situation when they go to fruit.

Lack of sunlight and high temperatures can cause tomatoes to grow, so you can prune the dense side branches properly. At the same time, fertilize reasonably.

What is the reason why colleagues do not set fruits? This should be relatively unmissable, he should not be able to ripen directly, so it should be necessary to pay attention to it, so it should be better to let him mature, and then pick, this should still be the most delicious.

Like this variety of tomatoes, the fruit set is not very good, now this time, the bottom of the fruit is relatively OK, it is particularly vigorous growth, this situation of vegetative growth is too vigorous, reproductive growth will be poor. You see when it starts this fruit spike also grows very well, we say a lot of branches, it blooms a lot, but the fruit setting is not good, these basically do not sit, in the case of excessive vegetative growth, more nutrients are given to it to grow leaves, are given to it long stems, so the fruit does not get sufficient nutrition, especially in the process of its flowering and flower bud differentiation, if it does not get sufficient nutrition, it is difficult to sit on the fruit, so this situation occurs, looking at more flowers, However, the fruit set rate is not high.

Mr. Liu believes that due to the excessive vegetative growth of tomato plants and insufficient reproductive growth, the phenomenon of non-fruit setting has occurred, so how should it be solved? Teacher Liu Tianying gave a detailed solution. The leaves inside can be properly knocked off a few, and there must be a strong nutrition, one is to supplement it with boron fertilizer and calcium fertilizer, and there is to add more nutritious fertilizers to it, such as alginic acid, fish protein, chitin, etc., can be supplemented by drip irrigation, spraying, after supplementing these organic nutrients of fertilizer, the flower is easier to sit, in addition to sitting on these fruits, it will also expand faster, and pay attention to nitrogen fertilizer do not use too much to increase the amount of potassium fertilizer, In this way, the overall vegetative growth and reproductive growth are balanced, so that the yield and quality will be better.

In addition to nutritional supplementation, Mr. Liu reminded vegetable farmers that the planting density of crops and the temperature management of the shed will affect the fruit setting of plants. When we plant some varieties, first of all, we cultivate and manage, according to the characteristics of its variety, like this itself it grows vigorously, we can properly reduce the density when cultivating, like the density of the seed is too large, and then the vegetative growth will be too prosperous, because when growing, it wants to compete for space, so the vegetative growth will be more prosperous, resulting in poor reproductive growth, there will be more flowering, fruit setting is more difficult.

In addition, the temperature is also high now, so we must ensure that the temperature in our shed is more suitable in the hot weather, control it at about 30 degrees during the day, try not to exceed 33 degrees, and the temperature at night is basically about 20 degrees. Because if it is too high, it consumes a lot of nutrients by respiration, so it will leave less nutrients to our fruit, and it will be difficult to sit down, and it is not good to sit and sit on the fruit swelling, so we should pay attention to widening the temperature difference between day and night.

There should be a problem with water and fertilizer management, it may be that there is not enough light, or the temperature outside is too high. At this time, you can properly shade the light, and also properly water, pay attention to the damage.

It may be that there is no pollination, so it is not fruitful. As a result, manual pollination is required.

If the tomatoes only bloom and do not bear fruit, it is likely to be due to improper fertilization, if the tomatoes are not managed well when they are blooming, or if there is persistent rainy weather, this will happen; Tomatoes should be fattened in time when they are blooming, and they should also be guaranteed to receive sufficient light.

Tomatoes only bloom but do not bear fruit or rarely bear fruit, which is mainly related to nutrient imbalance, soil acidification, temperature discomfort, improper use of hormones, abnormal environment during flowering, insufficient light, excessive planting density, etc.

In the final analysis, it is caused by poor management or unscientific management during the growth period of tomatoes. Excessive application of nitrogen fertilizer in the early stage will cause tomatoes to grow vigorously. Plant growth regulators can be sprayed to control the plant, resulting in dense foliage and delicate upper apex.

It is not only not conducive to the flowering and fruiting of tomatoes, but also the canopy environment with poor ventilation and light transmission conditions is also easy to induce tomatoes to develop diseases such as blight and mildew.

Even if the fruit is hung, it is easy to have deformed fruits such as green shoulders and flower faces. In addition, the excessive use of nitrogen fertilizer, especially the excess of ammonium nitrogen, will directly affect the normal absorption of potassium, boron, magnesium and other elements by plants. Vegetarian deficiency will then occur, which will adversely affect the normal flowering and fruiting of tomatoes.

Insufficient boron and calcium will also cause tomatoes to have fewer flowers and fewer fruits, so you can spray calcium on the foliar surface with an appropriate amount of calcium before flowering, and supplement with boron foliar fertilizer.

Planting rules with balance

Therefore, according to the law of fertilizer demand during the growth period of crops, the amount of nitrogen fertilizer should be strictly controlled, and the application of decomposed organic fertilizer or microbial fertilizer should be increased as much as possible, and foliar fertilizer should be emphasized. Controlling the early vigorous growth, crazy seedlings and lack of nutrients is the guarantee to achieve excellent and high yield of tomatoes in the later stage.

It should also be noted that many farmers only plant nitrogen fertilizer application, but do not pay attention to phosphorus and potassium fertilizer application. After tomato planting, if the seedlings are relatively vigorous, the top dressing nitrogen fertilizer should be stopped immediately. And timely topdressing of phosphorus and potassium fertilizer or foliar spraying of potassium dihydrogen phosphate, etc., to supplement the plant with trace elements, so as to promote better flowering of tomatoes.