What s wrong with tomatoes? What is the case with tomatoes?

Answer. 1. Pruning too early or too heavy. Tomato side branch removal is generally carried out when it is 6 7 cm long, if the branch is too early, it will not only affect the development of the underground root system, limit the number and quality of the root, but also make the aboveground part grow poorly, affect the normal growth and development of leaves, and induce leaf curling.

Similarly, topping too much will have the same consequences.

2. High temperature, strong light and drought. At the peak of fruiting, the plants are lush and tall, and if there is high temperature and strong light, the transpiration of tomato leaves will be greatly increased. If the water lost by transpiration is not replenished in time, the leaves will wilt and curl.

Similarly, when the soil is dry and lacks water, the water supply of the soil cannot meet the needs of the plants for transpiration, and leaf rolling will also occur. As a result, soil dehydration, plant injury, and root damage can aggravate leaf curling. If the tomato is watered at noon on a hot day, due to the sudden drop in ground temperature, the root system cannot adapt to the sudden change, and the water absorption is temporarily inhibited, which will also cause physiological drought and leaf rolling.

3. Improper fertilization. Excessive application of nitrogen fertilizer, or lack of elements, will cause the balance of nutrients in the body, cause metabolic disorders in the body, and will also cause tomato leaf rolling. Generally speaking, when there is a surplus of ammonium nitrogen, the leaflet on the mature compound leaf is bulging, and the leaflet is turned over like a buckle ship. When there is too much nitrate, the small leaves are curled.

When the elements are deficient, there will also be leaf curling, such as severe phosphorus, potassium deficiency, calcium deficiency, boron deficiency, manganese deficiency, etc., which can cause leaf curling symptoms.

What to do with rotten fruit on tomatoes?

There are generally two types of tomato rot fruits, one is when the fruit is green, and the other is when the disease changes color.

The main diseases that occur in the green fruit are as follows:1Soft rot, which is a bacterial disease, the disease is foul, the peel remains intact, but the internal decay, fermentation is very fast, especially the cracked fruit occurs more severely, in the early stage of the disease can be prevented with agricultural streptomycin and neophytomycin.

The formula of 75 grams of 60% catalyst, 10 ml of chlorotactyl and 25 ml of champion potassium has a good effect on comprehensive control, and champion potassium is a biological agent that can promote growth. 2.Cotton rot and late blight caused by fungi, cotton rot is also infecting green fruits, the disease is fruit softening, there is obvious shedding, and white hairs grow on the fruit when the humidity is high, generally sprayed with 64% alum wettable powder 500 times, or 50% enoylmorpholine plus Shuofeng 481 for prevention and control.

3.Late blight, the disease is the fruit of oily spots, the diseased fruit is very hard, like water, first from the leaf edge or leaf tip of the disease, can be used 20% formic acid ding 600 times or 2% Wuyi mycin water 200 times spray for prevention and control.

What to do if tomatoes crack their fruit?

The climate is arid and high temperature is prone to physiological fruit splitting: one is radial fruit splitting along the fruit pedicle; One is annular fissure; In addition, there are some irregularly shaped cracked fruits, which will reduce the yield and quality of tomatoes, and will also induce soft rot, so it is necessary to strengthen management and carry out foliar calcium and boron supplementation. In the management of pruning and forking should not be excessive, fertilization should be balanced, and calcium nitrate foliar fertilizer can be sprayed on the foliage.

Also pay attention to the cotton bollworm, which is easy to cause rotten fruits, cotton bollworm likes to eat flowers and young grass, not only spray on the ground, but also spray the front and back of tomato branches and leaves. Since the bollworm is active at night, it is best to choose the spraying time in the evening. The control agent can use chlorantraniliprole, spraying 10 ml per mu, and the permeability of this agent is very strong.

At present, the biggest problem in tomato planting is to promote flowers and fruits. Take our current planting of the most powdered fruit Qiuyan tomato as an example, generally we Qiuyan tomato to leave 5 ears of fruit, each ear of fruit to leave 4 fruits of uniform size, each fruit in about 200 grams, so that the yield of each tomato is about 7 catties, only in this way can our mu yield reach the level of about 15,000 catties, so that the fruit hanging rate can ensure the basic mu yield.

However, in practice, we often have one spike or even two spikes of flowers, because the plant grows, the vegetative growth is greater than the reproductive growth, resulting in large leaves, flowers and small flower buds, poor differentiation, and the formation of flower drop.

After planting, the plant grows, resulting in the phenomenon of seedling fertilizer and thinness, which will restrict the yield in the later stage if it is not adjusted in time.

A typical case of failure, the three spikes did not form fruits.

After using the Spanish natural anti-expert, the flower buds of the tomato are large and the flowers bloom neatly.

Highly concentrated natural plant active substances, anti-stress to increase yield, regulate crop endocrine and metabolic functions. Anti-stress production is the first choice for primary and secondary antibody experts.

1.Relieve crop stress period (pesticide damage, fertilizer damage, frost damage, high temperature and other stresses).

2.Promoting plant growth and flower bud differentiation can promote the transformation of leaf buds and mixed buds into flower buds, improve fruit setting rate, and increase single fruit weight.

3.Natural plant actives.

4.Promote crop metabolic function, promote the synthesis of plant endogenous hormones, and through specific metabolic pathways, locate to the growth of the system and various organs of plants at different concentrations, and quickly correct crop growth problems.

Therefore, the effect of anti-experts in tomato flower promotion and fruit preservation is magical, and it is worth a try for our vegetable farmers.

Pepper anthracnose, with the help of wind and rain spread, high temperature and rain, too much water, weak growth, too much density, too much nitrogen fertilizer, will aggravate the occurrence of the disease, use more organic fertilizer fungus fertilizer, increase phosphorus and potassium fertilizer, improve disease resistance, promote root growth, can use pesticides, difenoconazole, prochloraz, spray evenly with water, spray once every 7-10 days.

For bacterial diseases, you can use a fungicide to see the effect. Pay attention to the humidity, temperature and fertilizer and pesticide dosage concentration.

A piece of red and a white on the surface of the tomato fruit is actually caused by uneven color change, which leads to uneven color change due to poor variety, improper temperature, improper fertilization, insufficient light and other reasons.

Causes and solutions

First, the variety. It may be that your current seed variety is not well adapted to the local environment, so this uneven veraison will occur. You can refer to the experience of others and see what varieties they grow, there are some excellent tomato varieties, which may grow well in other places, but the climate here is not suitable for us.

2. Temperature. Tomatoes grown outdoors are very susceptible to this phenomenon, and high or low temperatures can lead to uneven veraison.

3. Fertilization base stool. They should be given more phosphorus and potassium fertilizer during the fruit expansion period, which does not mean that nitrogen fertilizer is not used, they are actually more for the leaves, and what we want is the fruit, and we can also spray foliar fertilizer, such as Haihe Weihai Xun This meal of potassium dihydrogen phosphate, to help tomatoes better expand the fruit and change color.

Fourth, light. The color is to be helped by the sun, if when planting tomatoes, these sunlight can not help them, then there will definitely be a bad color change, in the case of too strong sun, we also need to properly shade the tomatoes.

Tomato acid rot, the initial fruit is partially or fully softened, the skin gradually turns brown, and the skin is slightly shrunk and cracked.

Under the condition of high humidity, sparse white mold grows on the surface or crack of the diseased part, that is, pathogenic mycelium or conidia peduncle.

At the beginning of the disease, spray this preparation with copper succinate fatty acid, prochloraz, copper ammonia, copper hydroxide, mancozeb, and mancozeb at an interval of 7-10 days.

Summary. Okay, dear, I'm glad to answer for you, can you briefly describe to me what kind of disease tomatoes have? I'll help you with the answer.

Okay, dear, I'm glad to answer for you, can you briefly describe to me what kind of disease tomatoes have? I'll help you with the answer.

The tomatoes are sick, can you see what the disease is, I have ** to send it to you.

Okay dear, how do you send it.

You send the ** over to kiss! I'll take a look for you.

Are most of them like this, dear?

Xiaoye, hugging the head.

There are two causes of tomato lobular disease: one is a physiological disease, and the other is a viral disease.

Have you ever fertilized recently?

Or have you used pesticides recently?

I watched the leaves turn yellow, right?

analysis of the causes; 1. The pesticide concentration is too high or caused by the improper use of hormone leaf fertilizer. 2. The whitening and yellowing of the heart leaves is mainly due to zinc and iron deficiency. 3. Soil drought suddenly watered with cold water to fry the roots, water and fertilizer concentration is too high, soil pollution, poor environment and other factors caused by the root system to carry the damage of the dust, but also collapse will cause the heart leaves to turn yellow

The reason is as follows: too many pesticides are sprayed, and the insects feel that it is not delicious.

It's not naturally cooked, it's all induced, and in order to be able to be on it all year round, it's basically all induced.

In order to pursue high yield, storage and transportation, and strong resistance to stress, researchers have improved the seeds, and in the past, tomatoes planted in rural areas were kept by themselves, and they were all varieties that conformed to the local soil quality. Today's varieties are high-yielding, non-lodging, and resistant to insect pests.

Please check the picture by yourself. In order to go to market as soon as possible, or to sell well, some merchants will artificially ripen tomatoes, so that tomatoes are not fully developed and not delicious. Several methods can be used to identify ripe tomatoes, shape, ripe tomatoes are not round in shape, and the shape is mostly prismatic.

Internal structure, break open tomatoes to see, ripe tomatoes are less juiced, seedless, or the seeds are green. Naturally ripened tomatoes are juicy, with red flesh and earthy yellow seeds. The difference in taste.

The third is the taste, the ripe tomato flesh is hard and tasteless, the taste is astringent, and the natural ripeness tastes moderately sweet and sour.

Tomato, that is, tomato, is an annual or perennial herbaceous plant of the genus Solanaceae, the body is tall and rice, the whole is mucous glandular hairs, has a strong odor, the stem is easy to lodging, the leaves are pinnately compound or pinnately deeply lobed, the total peduncle of the inflorescence is 2-5 cm long, often 3-7 flowers, the calyx is radiate, the corolla is radial, the berries are oblate or nearly globular, fleshy and juicy, the seeds are yellow, and the flowering and fruiting period is summer and autumn.

Causes of tomato greenback fruit:

1) Potassium deficiency. Tomato has a large demand for potassium, potassium can promote tomato swelling, promote fruit color change, tomato potassium deficiency fruit development is slow, uneven ripening, uneven coloring, near the shoulder of the fruit color change slowly.

2) Too much nitrogen fertilizer. Excessive application of nitrogen fertilizer leads to excessive vegetative growth and poor coloring of the fruit. During the veraison transformation stage, excessive application of nitrogen fertilizer will promote the synthesis of chlorophyll, which will delay or slow down the decomposition of chlorophyll in the fruit, especially in the pedicle of the fruit, affect the formation of lycopene and carotenoids, and cause the green shoulder phenomenon of tomato.

3) The temperature in the shed is too high or too low, and the process of coloring tomato fruits is the process of chlorophyll decomposition, lycopene and carotenoid formation. In general, the optimal temperature for tomato fruit development and coloration is 24 27 during the day and 15 18 at night. When the temperature in the shed is lower than 12 or higher than 32, the formation of lycopene will be affected, resulting in poor fruit coloration and may produce green back fruit.

Precautionary measures. 1) Scientific fertilization. Tomato has the highest fertilizer requirement of potassium, followed by nitrogen and phosphorus. In general, nitrogen is the main source at the seedling stage, and the absorption of phosphorus and potassium increases rapidly from the first ear of fruit, and the peak fruit stage is the period when tomato needs the most potassium.

Therefore, scientific fertilization should be carried out according to the law of tomato fertilizer demand when fertilizing. The base fertilizer should be applied with sufficient high-quality decomposed organic fertilizer, timely and appropriate topdressing, pay attention to appropriate control of nitrogen fertilizer, more potassium fertilizer, and reasonable use of phosphate fertilizer.

2) Top dressing outside the roots. Tomatoes are typical potassium-loving crops, and potassium is easily lost in the soil, while potassium is easily fixed in clay and coarse sandy soils, so potassium deficiency often occurs. Improper fertilization, organic fertilizer is not ripe, low ground temperature, and soil moisture are too high, which will affect the normal growth of the root system, affect the absorption of potassium and other nutrients by the root system, and cause the tomato to produce green back fruit due to potassium deficiency.

In case of the above situation, foliar spraying of amino acid + potassium dihydrogen phosphate solution can be used for root topdressing to supplement the deficiency of potassium and a variety of trace elements.

3) Adjust the indoor temperature. In order to promote the development and coloring of tomato fruits and prevent the production of green back fruits, the temperature in the greenhouse must be adjusted in the tomato fruiting period, especially in the veraison period, and the temperature can be controlled at 23 28 during the day and 15 18 at night.

4) Dig deep into the land. Before planting, the soil is turned deep by more than 30 cm, which makes the soil loose and permeable, which is conducive to the growth and development of tomato roots, strengthens the root absorption capacity, reduces the lack of potassium and other nutrients, and can also improve the water storage capacity of the soil.

Tomato (solanum lycopersicum) is a perennial herbaceous plant of the tomato subgenus of the Solanaceae family, also known as tomato and persimmon. The word "fan" in tomato is sometimes mistaken for the word "fan" in cursive. Native to Central and South America, it is commonly cultivated throughout China, and is produced more in summer and autumn.

It is now widely cultivated all over the world as a food fruit and vegetable.

Nutrients per 100 grams of tomatoes.

Energy 11 kcal, mg of vitamins, grams of protein, grams of fat, grams of carbohydrates, grams of folic acid, grams of dietary fiber, 63 grams of vitamin A, 375 mcg of carotene, mg of thiamine.

Riboflavin mg, niacin mg, vitamin C 14 mg, vitamin mg, calcium 4 mg phosphorus 24 mg.

Potassium 179 mg, sodium mg, iodine micrograms, magnesium 12 mg, iron mg, zinc mg, copper mg manganese.

Botanical Classification].

Angiosperm phylum, Dicotyledons, Solanaceae, Solanaceae, Solanaceae, Tomato subgenera.