Control of Diseases and insect pests under Asarum Forest

1. Disease

Sclerotinia sclerotiorum is a destructive disease of cultivated Asarum, which harms the roots, overwintering buds, stems, leaves, flowers and fruits of Asarum. It often happens in spring and autumn, and when it is serious, it will lead to the death of Asarum.

Prevention and control measures: arrangements should be made in line with the principle of "prevention is more important than cure". ① blockade disease-prone areas to prohibit the transportation of diseased seeds and seedlings to prevent man-made transmission. The ward and sickbed should be cured in time. ② established a disease-free seedling base to select disease-free seedlings and establish a strict management system to prevent diseased soil, diseased seedlings and diseased plants from being brought into the disease-free area, and the mixed use of tools in the disease area was strictly prohibited. When disinfecting and transplanting ③ seedlings, strong seedlings were selected. Before transplantation, the seedlings were soaked in the mixture of 800 times benzoate and 200 times 10% carbendazim for 2-4 hours, and then planted. ④ medicament control Asarum field with central disease area was perfused with the mixture of carbendazim and carbendazim (same as above), reaching to the root. The drug was used for 6 times from the beginning of April to the end of May and from early September to the first ten days of November.

two。 Insect pest

Asarum pests include ground tigers, grubs, locusts, black caterpillars, ants and so on. Black caterpillars and locusts bite leaves, ground tigers bite petioles, grubs bite buds, roots and petioles, ants mainly remove seeds after fruit ripening and breaking. Locusts, black caterpillars and ants can be sprayed on the leaves and on the ground with 1000 times of trichlorfon. Ground tigers and grubs can be irrigated with 1000 times of trichlorfon, or they can be caught artificially or killed with poison bait.