Control of loquat soot disease
Loquat soot is induced by aphids, scale, whitefly and other secretions. Symptoms: it does not invade the dark brown mildew layer of host tissue on the surface of leaves, fruit surfaces and branches. When it first happened, there were only mildew spots. Then expand to form a fluffy shape. Affect leaf photosynthesis and fruit coloring, and weaken the tree potential. Prevention and control methods: (1) spray turpentine: 10 times in winter and spring, 14-16 times in summer and autumn, or 50 times in diesel emulsion. Kill not only scale, whitefly and other pests, but also soot pathogen. (2) at the beginning of the disease, spray 0.3% 0.5% lime excess Bordeaux liquid. (4) do a good job of pruning and pruning to make the crown transparent and reduce the disease.
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Loquat smart fertilization helps crack prevention and sweetening
Loquat fruit cracking is easy to occur in rainy spring, and reduce sugar accumulation, reduce fruit sugar content, so that fruit taste becomes light and quality is poor. If organic fertilizer, phosphorus potassium fertilizer and calcium fertilizer are applied during this period, it can effectively prevent fruit cracking, promote sugar synthesis and accumulation, and improve the sugar content of fruits.
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Introduction of management techniques of loquat in spring
(1) soil preparation: planting ditches should be dug for loquat orchards in flat land. Generally, the ditches are 0.80m in width and 0.80m in depth. The distance between planting ditches is generally about 3m. The length of planting ditches depends on the size of the garden or the length of the slope. When digging ditches, open the topsoil and core soil, put the topsoil on the upper edge, backfill the topsoil first, and divide it into 3 Mel.
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