How to prevent discoloration of tomato sepals

Recently, many vegetable farmers have reported that the quality of tomato sepals are poor and turned brown, so that the fruit does not look bright, which affects the sales price, and many vegetable farmers have no remedy for this. There are four main reasons for the poor quality of tomato sepals. Vegetable farmers can take preventive measures.



1. Root injury is growing poorly

Due to drought, waterlogging, excessive fertilization, etc., the roots are damaged, the plant growth is poor, and the plant's endogenous hormone synthesis is insufficient, which will cause the leaves to yellow and the sepals of the fruit will age and turn yellow-brown. This requires strengthening management, improving growth, and avoiding root-damaging factors.


Suggest

Irrigation with rooting agents to promote root recovery, foliar spray with 6000 times of sodium nitrophenolate and 1500 times of brassinolide plus 400 times of nucleotides to promote the green synthesis of tomato leaves and sepals.





2. High temperature causes discoloration of sepals

The high temperature of the fruit growing environment is one of the predisposing factors. High environmental temperature, strong plant metabolism, high nutrient consumption, aging fruits, and rapid senescence of sepals can easily cause yellowing and browning problems. The high temperature in the shed will also cause the air to dry out and cause the plants to lose excessive water, which will also cause the sepals to turn brown and yellow.


Suggest

During the fruit growth process, vegetable growers should pay attention to adjusting the dry humidity in the shed, and pour small water frequently to avoid yellowing of the dry tip of the sepals due to drought and water loss.


3.Excessive use of ripening drugs and red-stimulating drugs will make the sepals yellow

Use ripening agents, these drugs all contain ethephon, which not only promotes coloring and ripening, but also promotes fruit aging, making the sepals yellow and brown. Therefore, when using drugs containing ethephon, the concentration must not be too high.


4. Pests are the fourth cause of discoloration of sepals

Tetranychus mites are small, barely visible to the naked eye, and feed on plant sap as their nutrition. The common ones are Tetranychus cinnabarinus, Tetranychus truncatus, Tetranychus urticae, etc. During the growth and development of tomato fruits, if the spider mites are heavy, there will be many spider mites sucking juice in the calyx, dense and small. Insect mouth will cause the sepals to darken, turn yellow and white, and severely turn yellow-brown. Thrips file the plant sap, causing the sepals of the fruit to turn yellowish-brown, and some also make the pericarp next to the sepals turn into khaki or brownish-yellow.



If you have any question, please feel free to contact us:

Email:anne@cyclebioscience.com

Whatsapp:+86 15050351426

评论

发表评论

此博客中的热门博文

The role of gamma-aminobutyric acid in agriculture

图片
  γ-aminobutyric acid (CAS number: 56-12-2), (GABA for short), with a relative molecular weight of 103.1, is a four-carbon, non-protein amino acid, which is widely used in vertebrates, plants and Widespread in microorganisms. The content of GABA in plant tissues is extremely low, usually between 0.3 and 32.5 μmol/g.  It has been reported in the literature that the enrichment of GABA in plants is related to the stress response experienced by the plant. When subjected to stress such as hypoxia, heat shock, cold shock, mechanical damage, and salt stress, it will lead to the rapid accumulation of GABA.  It has become a research hotspot to process plant food raw materials into GABA-rich functional products after a certain stress treatment or through microbial fermentation to increase the GABA content in the body.  As a novel functional factor, GABA has been widely used in the food industry.  Foods developed using raw materials such as GABA-rich  germinated brow...
阅读全文

Analysis on the role of rhizobia in soybean planting

图片
Rhizobium soybean is a live microbial preparation. The rhizobia in the root nodules and the legumes are mutually beneficial: the organic matter produced by the legumes through photosynthesis is partly supplied to the rhizobia; the ammonia produced by the rhizobia through biological nitrogen fixation is supplied to the legumes plant. , it fixes free nitrogen in the air to supply soybeans to meet soybean demand for nitrogen. It is a good measure to increase soybean yield, save fertilizer and reduce pollution, and has been valued by researchers around the world. First, the role of rhizobia 1. Nitrogen fixation Soybean rhizobia uses the products of soybean photosynthesis as energy, and converts nitrogen in the air into nutrients required for soybean growth and development. Rhizobium and soybean have a symbiotic nitrogen fixation relationship. At the beginning, soybean rhizobia fixed little nitrogen, until flowering to drum. The initial stage of grain is the peak of nitrogen fixation by so...
阅读全文

The new cotton shoot-controlling product--prohexadione calcium, which is better than uniconazole, does not cause premature aging!

图片
Uniconazole is a triazole plant growth regulator widely used in cotton production. In recent years, it has an obvious effect on controlling the growth of cotton, promoting flowers and peaches, and can also increase the ratio of cotton double bolls. Welcomed by some cotton farmers.  Today, I will introduce to you a new type of plant growth regualtor, which is more effective than Uniconazole. It is better than Uniconazole because it is not prone to premature aging and defertilization of cotton. 1. What is prohexadione calcium Prohexadione calcium is a new type of plant growth regulator developed by Japan Combina Chemical Industry Co., Ltd. It interferes with the synthesis of gibberellic acid in plants, reduces the content of gibberellic acid in plants, controls leggy growth, promotes flowering and fruiting, and increases yield. Make its root system developed, protect cell membrane and organelle membrane, and improve crop resistance ability. So as to inhibit the upper vegetative growt...
阅读全文