Water Pepper Rivaled a Chemical Spray on Rice Grasshoppers
Two one-season rice trials tested boiled plant extracts as insect sprays. On Konkuk's natural farming paddy in Paju, water pepper, tobacco leaf and neem sprays cut pest counts to a fraction of the unsprayed plots while dragonflies stayed; in the lab, water pepper and tobacco killed every grasshopper within two days. On a conventional farm in Yeoju, water pepper extract held grasshoppers and stink bugs about as low as the chemical cypermethrin, but not stem borers.
Found Lab: water pepper and tobacco killed all grasshoppers within 2 days