How to control bean drill beetle?
Bean borer, also known as cowpea borer, is one of the main pests of beans. Cowpea borer adults are scattered and hidden, fly to lay eggs in a wide range, lay a large number of eggs, it is not easy to spray or trap. The adults lay eggs in the tender leaves of the plant, and about 5 Murray hatched for 7 days and then ate into the pods to feed on the beans. When the 3rd instar larvae drill into the pods, it is difficult to kill them by spraying pesticides. Therefore, fertilizer and water management should be strengthened to control the pest, so that the emergence of seedlings is consistent, the growth is neat, and the flowering and podding period is relatively concentrated, so as to centrally eliminate the pest in the critical period. Spraying should adhere to the principle of "mainly treating buds" and spray and kill the larvae in the buds during flowering. The best spraying time is on a sunny day at 8: 00 am when the bud opens at 10: 00 am. Spraying once when the pods grow into more than 10 cm after flowering can kill the young larvae that are newly hatched and decay into the young pods. The medicament can choose kungfu 1500 times, or avermectin 1500 times spray, or Arebo (4.5% EC) 1000Mel 2000 times, or Arete (25% EC) 1500Mel 2000 times; or Ruining (2.5% EC) 2000 times; or Numster (40% EC) 1500MW 2000 times; or Sukai (44% EC) 2000000 times.
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Regulating plants, raising leaves, replenishing fertilizer and water to promote more pod setting of beans
The market of beans is good this year, and the price is still above 2 yuan per jin. Many vegetable farmers are only greedy, because many beans are very difficult to sit on pods, even if they are only defective pods, which are worthless at all. However, recently, the author saw the beans planted by Zhang Huaqing in Dongxia Town, Qingzhou City.
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How to control bean disease?
1. The main symptoms, beans can be infected with bacteria throughout the growing period, but the resistance weakens and the susceptibility increases during the period from the beginning of flowering to fruiting. The disease mainly affected the leaves, and the leaves appeared faded green, yellow and white spots at the initial stage of the disease, and the spots increased gradually, until the whole leaf was densely covered. The plant is short, the English is few and small, fertile.
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