Control measures for tomato leaf mould are as follows:
1. Rational rotation: More than three years of rotation with non-solanum crops to reduce the number of bacteria in soil.
2. Seed Disinfection: Disease-free seeds can reduce the initial infection caused by seed-borne bacteria in the field. The introduction of seeds requires seed treatment and soaking in warm water. Using the difference in heat-tolerance between seeds and germs, choose a temperature that can kill pathogens inside and outside the seeds without damaging the vitality of the seeds. For tomato seeds grown in the greenhouse, the seeds should be soaked in warm water at 55°C for 30 minutes to remove germs inside and outside the seeds. After being taken out, cool in cold water and soak in seeds with potassium permanganate for 30 minutes. Remove the seeds and rinse with water several times before finally drying. Dry germination sowing.
3, high temperature stuffy shed: Select sunny noon time, take about two hours of high temperature treatment of 30 ~ 33 °C, and then ventilation and cooling in time, the pathogen has a better control.
4. Strengthen the management of greenhouses: timely ventilation, proper control of watering, timely ventilation and dehumidification after watering, and double ridge mulching, under-mulch irrigation, in addition to increasing soil moisture, can also significantly reduce the greenhouse air Humidity, thereby inhibiting the occurrence and re-infestation of tomato leaf mold, and mulching can effectively prevent the spread of germs in the soil. According to the weather conditions outside the greenhouse, through reasonable ventilation, as much as possible to reduce the greenhouse humidity and leaf condensation time, the disease has a certain control effect. Pruning in time and removing the leaves of the lower part of the plant as much as possible can also increase ventilation. The implementation of formula fertilization to avoid excessive nitrogen fertilizer, appropriate increase in phosphorus, potassium fertilizer.
Hormone:
A chemical substance produced in the body that controls and regulates the activity of certain cells or organs. Many hormones are secreted by special glands, such as thyroid hormone produced by the thyroid gland. Hormones are essential for every activity of life, including the processes of digestion, metabolism, growth, reproduction, and mood control. Many hormones, such as neurotransmitters, are active in more than one physical process.
Endocrine:
Pertaining to hormones and the glands that make and secrete them into the bloodstream through which they travel to affect distant organs. The endocrine sites include the hypothalamus, pituitary gland, pineal gland, thyroid, parathyroids, heart (which makes atrial-natriuretic peptide), the stomach and intestines, islets of Langerhans in the pancreas, the adrenal glands, the kidney (which makes renin, erythropoietin, and calcitriol), fat cells (which make leptin). the testes, the ovarian follicle (estrogens) and the corpus luteum in the ovary). Endocrine is as opposed to exocrine. (The exocrine glands include the salivary glands, sweat glands and glands within the gastrointestinal tract.)
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