Yellow Cherry Tomato
Yellow cherry tomato red cherry tomato is a variation on color, also known as grape yellow cherry tomato tomatoes and tomatoes, cherry tomatoes, pearl in foreign countries have "small kingo", "love".It is both a vegetable and fruit, not only the color is gorgeous, beautiful shape, and taste and rich nutrition, besides containing tomatoes all the camp A composition, its vitamin content is higher than the ordinary tomato.Promoted by the United Nations food and agriculture organization (fao) a priority of one of the "four big fruit".Tomatoes is a kind of heat with crops, fruit about 1 ~ 3 cm in diam., red blue, taste sweet, soft, good taste, high nutritional value.
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1. Selection of disease-resistant varieties is an effective method for controlling yam pests and diseases. Such as: selection of Taigu Mao yam can be resistant to stem rot. When planting disease-resistant varieties, they should be rationally laid out, and they should be rotated every 2 to 3 years, and attention should be paid to the purification and rejuvenation of varieties.
2. Rotation can reduce or avoid stalk rot and root knot nematode damage. The non-infested crops such as corn, wheat, radish, and watermelon should be cropped at least once every 3 years; the old districts that cultivate yam all year round should be rotated once a year; the early-season crop rotation can be carried out in the areas where conditions permit, and the control effect is better.
3. Soil preparation can directly eliminate the pathogenic bacteria that live in soil. Select high-desert, low-humidity, low-lying, fertile sandy loam, and prepare for autumn land preparations, which can dump the remains left on the ground into the soil, accelerate the decomposition and decay of the diseased bodies, and cause some pathogens to lose their vitality through the winter sun and spring drying. .
4. Fertilizers and irrigated yams are hi-fertilizer crops, and organic fertilizer must be applied during site preparation. The general application of phosphorus and potash fertilizers is beneficial to the formation of yam machinery and enhances the ability to resist pathogens. Excessive application of nitrogen fertilizer can easily lead to plant growth, stem and leaf tissue soft, easy to get yam anthrax. The principle of watering is “don't pour in earlyâ€. When you pour with clean water, be sure to pour through. There must be no standing water in the field. The rainy season should be drained in time to avoid root rot.
5. Field cleaning the field weeds best manual removal. The timely removal of the leaves and stems of the diseased yam can reduce the re-infection of pathogens. When the yams are harvested, the sick, weeds, and rot stalks left on the ground must be burned centrally or brought deep in the fields to reduce overwintering pathogens.
Second, chemical control includes chemical protection and chemical treatment. Chemical protection is to spray fungicide before the yam is not attacked to prevent the invasion of pathogenic bacteria. The chemical treatment is to spray pesticides after the yam is infected to restore the health of the plant or prevent the disease from expanding. The prevention and treatment of yam diseases and pests mainly includes seed treatment, soil disinfection and spraying of plants. It is worth noting that one month before the harvest of yams, avoid using drugs to prevent contamination of tubers and affect the quality of yams. Chemical control requires high-efficiency, low-residue, low-toxicity and safe pesticides, together with other control methods.
1. Yam anthrax damage caused stems and leaves stems and leaves, leaves. Control methods: seed potatoes soaked with 1:1:150 wave multi-liquid for 10 minutes. Qimiao sprayed the first drug with chlorothalonil 600 times and sprayed it 10 days later. From July to August, it was found that the onset of disease was 65% of dexamethasone WP 500 times, 50% of eutectic WP 800 to 1000 times, 50% of thiophanate-methyl 700 to 800 times, depending on the severity of the disease. 2 to 4 times, alternating spray. Each interval of 8 to 10 days, after the rain should be filled with liquid spray.
2. Stunting caused by short-line nematode disease, in which the whole plant yellowed and died. Tuber victims appear small tumors of different sizes, affecting yield and quality. The transmission routes are mainly soil spreading and seed potato propagation. Control method: Before the seed sowing, treat the soil with 5% gram of phosphorus granules per acre, 5 kg of water, add water, mix and spray 100 kg of wet fine soil, and spread the ditch evenly on both sides of the seed potato or combine evenly with the ground preparation. 30 cm. Seed disinfection when planting potatoes, with 40% methylisophosphoric acid 600 times soaking species for 48 hours, strictly selected, eliminating diseased seed potatoes.
3. Leaf bees bite on the yam leaves, resulting in a serious loss of leaves, affecting photosynthesis leads to reduced tuber yield. Use 2% enemy to kill 3000 times liquid or 90% crystal trichlorfon 1000 times to control.
4. Biting tubers, so that tubers cook not bad, taste bitter. Use 75% phoxim EC as seeds and weigh 0.1%.
First, agricultural control uses disease-resistant varieties, crop rotation, soil preparation, field cleaning, fertilization, irrigation and other measures to avoid or reduce the occurrence of yam pests and diseases.