First, root rot
1. The main symptoms. The fine roots of the affected plants first brownish dry rot and gradually spread to thick roots. In the later period, the roots were rotted and the aboveground parts were wilted and died. The disease is a kind of fungal disease. The pathogenic bacteria are wintered in the soil or seedlings with conidia, becoming the primary source of infection in the following year. The whole growth period can occur, from June to July is the epidemic period. The plants are dense, the humidity in the field is high, and the disease spreads rapidly.
2. Control measures. (1) Agricultural control: Rational rotation, using high ridge and furrow cultivation, to prevent stagnant water, to avoid flooding irrigation, and timely removal of diseased plants. (2) Chemical control: 1 Liquid soaking. Before planting, use 50% carbendazim or 70% thiophanate-methyl root solution 800 times, and let them dry after 10 minutes. 2 liquid spray. In the onset period, 50% carbendazim 800-fold or 70% thiophanate-methyl 1000-fold was used to irrigate the roots, 250 ml per plant, irrigated 7-10 days, 2-3 times in succession; 70% thiol can also be used. Bujin 500 times, or 75% benzoyl 600 times, once every 10 days, sprayed 2-3 times, spraying the stem base.
Second, the disease
1. The main symptoms. All parts of the plant can be harmed, and the lower leaves of the plant in the early stage of the disease turn yellow, and the top leaves lose water and wilted during noon high temperature weather, and can be recovered sooner or later. In the later period, the entire plant leaves wilted and does not recover, and begins to rot from the base. The main root epidermis is water-stained and slightly yellowish. Peeling the epidermis reveals that the pith is completely rotted and the color is unchanged. It has a slight odor and is wet and rot. Commonly infected plants die within 1-2 weeks. When the soil is wet, it can occur shortly after planting, spread rapidly, and the roots can intermittently produce white mold. The disease is a fungal disease in which oocysts and mycelia grow in the soil with the diseased body. When the conditions are appropriate in the spring of the following year, the sporangia produced in the diseased part can be re-infected several times after being transmitted through rainwater.
2. Control measures. (1) Agricultural control. The use of sorghum cultivation can reduce the contact with pathogens. If it can be covered with plastic film, the effect is better. Strengthen water and fertilizer management, apply compost made from enzyme bacteria, increase phosphorus and potash fertilizers, and appropriately control nitrogen fertilizers. Use conditional fertilization with conditions. The diseased plants were immediately removed and the lime was disinfected. (2) Chemical control. Immediately after the emergence of the central disease strain, 72% of urea manganese zinc (Kelingling) WP 800 times or 72% of DuPont Kelu or 72% of WP WP can be sprayed 800-1000 times, and 56% of the water is dispersed Micro-granules 800 times, 18% mesalamine manganese zinc wettable powder 600 times, 70% phosphorus manganese zinc wettable powder 500 times, 50 liters per mu sprayed liquid, every 10 days or so 1 Second, treat the condition 2-3 times.
Third, leaf spot
1. The main symptoms. It mainly affects the leaves. There are nearly round or irregular dark brown lesions on the leaves of diseased plants, and the leaves die when they are severe. The disease is a bacterial disease. It began in May and continued until the end of the fall. The onset was heavy from June to July.
2. Control measures. (1) Agricultural control. Clean up the garden, buried the sick. Pay attention to drainage. Improve ventilation and light transmission conditions. Implement rotation. (2) Chemical control. In the onset stage, 50% carbendazim 800-fold or 70% thiophanate-methyl 1000-fold was used to perfuse the roots, 250 ml per plant, and irrigated once every 7-10 days for 2-3 consecutive times. It is also possible to use 70% thiophanate-methyl 500-fold or 75% benzoyl 600-fold, once every 10 days, spray 2-3 times, and spray the stem base.
Plant extracts refer to a class of substances derived from plants that have one or more biological functions. Can be separated by physical and chemical extraction of one or more effective components formed by natural products.
There are many kinds of plant extracts. At present, natural plant extracts mainly include essential oils, saponins, alkaloids, polysaccharides, polyphenols, flavonoids and so on. According to the biological activity, it can be divided into antioxidants: grape seed extract, green tea extract, pine bark extract, etc. Immune modulators: ginseng extract, gynostemma pentaphyllum extract, Ganoderma lucidum extract, etc. Improve cardiovascular function: ginkgo biloba extract, lotus seed heart extract, rhodiola extract, etc. Sedative: valerian extract, hop extract and so on.
According to their own characteristics in the market application of plant extracts can be roughly divided into six categories: coloring, seasoning, medicinal, health, dietary supplements and feed additives. Natural plant pigments refer to pigment components in roots, stems, leaves, flowers, fruits and bark of plants, such as turmeric, sappanwood, indigo, safflower, black bean and green walnut peel. Natural plant pigments are widely used in food, textiles, cosmetics, medicine, leather industry, printing and dyeing and other industries.
Plant extracts are rich in ingredients that can effectively stimulate the senses, such as sweeteners and volatile substances. Natural sweeteners, such as stevia glycoside and grosvenin, are popular new sweeteners. They are not only sweet, but also ideal substitutes for sucrose. Essential oils are concentrated volatile substances that are commonly used in the preparation of fragrances and are widely recognized in plant extracts.
Contained in the plant extracts of saponins, alkaloids, polyphenols, flavonoids and other ingredients are widely study has many biological activities, such as antioxidant, antibacterial, anti-inflammatory, improve animal production performance, antivirus, enhance immunity, etc., for human and animal health has the effect of nots allow to ignore, and the development of its pharmacology and health care function has become the main trend of plant extracts.In addition, as a dietary supplement, it is one of the main applications of various plant extracts. Such as oligosaccharides (oligosaccharides, oligosaccharides, oligosaccharides, galactose, etc.) dietary fiber, soybean protein, dietary fiber, wheat albumin, L-arabinose, sugar alcohol (xylitol, malt heavy sugar alcohol, sorbitol, etc.) and other natural plant food additives have been widely used in the food health care market. Many plant functional ingredients with anti-inflammatory, antioxidant and bacteriostatic properties are also commonly used as substitute anti-bacterial products. The application of green feed additives in livestock and poultry production has been vigorously developed, such as green tea polyphenols extract, pine bark procyanidins extract and polyanthocyanidins extract.
Due to the changes in lifestyle, working mode and consumption mode, more consumers are pursuing the life concept of "big health". The so-called "big health" refers to a concept of whole-process, comprehensive and total factor care for people's life around the basic necessities of life, life, old age, illness and death. It not only pursues individual physical and physical health, but also pursues mental, spiritual, social, environmental and family health. In the era of "great health", natural plant-based health products are the core and the key material basis.
With increasing attention to the food and drug safety, from natural plant in the development and utilization of the active ingredient is becoming more and more attention, a large number of food safety, have certain curative effect function of plant extracts have been used as raw materials in a variety of ways into functional food nutrition and health food has entered people's lives, and will play a more and more important role.
And more and more new research new discovery, predicts that the plant extract industry chain will have more members to join, there will be more business opportunities. The future domestic plant extract market will stride forward gradually to mature period!
Shaanxi Yingyuan Xingchuang Biotechnology Co., Ltd. is committed to plant extracts, advanced pharmaceutical intermediates, featured apis, and other customized research and development services; Relying on its GMP production base, it has set up a RESEARCH and development center and GMP pilot workshop to accelerate the commercialization process of production and research. The company has accumulated a number of invention patents, and has been declared by more than ten regulatory bodies such as China, FDA of the United States, EDQM of the European Union, India, Japan, South Korea and Australia. Please feel free to contact us.
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