Timely control of cherry blossom mulberry white shield scale
The cherry blossom mulberry white shield scale is mainly distributed in the cherry blossom cultivation area, and the occurrence is common. Because of the suitable climate and high humidity in the field, the occurrence is quite serious in some fields. The damage has caused the leaves to basically fall off, and the number of insect population is extremely high and dense, which can be seen as snow white in the near future. It is speculated that the first hatching stage of mulberry white shield scale should be around the end of September. The newly hatched nymph stage is the best time to carry out spray control. All farmers should strengthen the field inspection and control immediately if there is any occurrence, and keep the population base below the allowable economic level.
Control methods: in the nymphal stage, spray 1000 Mel 1500 times liquid, kill 1500Mel 2000 times liquid or scale miling 150Mel 200 times liquid. If the insect population density is relatively high, it should be sprayed again every 7-10 days, and pesticides should be carried out alternately to prevent scale insects from producing drug resistance. In addition, cherry trees with high population density should be pruned properly and concentrated on burning treatment to prevent further spread of insect pests.
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Rhododendron of Horse Cherry Blossom
Evergreen shrubs to trees, 2-15 m tall, DBH up to 40 cm, bark gray-brown, thick, irregularly flaky. Leaves leathery, oblong-lanceolate, abaxially densely gray-white to light brown spongy tomentose. Florescence February-May, terminal globose Cymes, 10-20 flowers, Corolla bell-shaped, 3.5-5 cm long, fleshy, deep rose red, 10 stamens, 10 ovaries. The fruit is ripe from October to November. Yunnan, Guizhou, Guangxi and other provinces and regions, Myanmar is also distributed.
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Red leaf cherry blossom
Red-leaf cherry blossom, a variety of magnificent cherry blossoms, has been selected abroad for many years, and its character has been stable. the flowers are very large, light red, double and with long peduncles. They bloom in April and May in Shandong. The flowers bloom before the leaves or bloom at the same time. The leaves are dark red in early spring and bright red from May to July. In the high temperature and rainy season, the old leaves become dark purple, the leaves are large and thick, and the leaves turn orange in late autumn when frost occurs. It is better to propagate red-leaf cherry blossoms by grafting and cutting. Grafting can be done from March to April or from July to August.
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