Banker Plants Control Rice Pests

By Kathy Keatley Garvey

Rice farmers seeking to protect their crops from pests without high dependency on pesticides may want to consider the sustainable pest management practice known as the “banker plant system.”

Planting a mix of sesame and Leersia sayanuka grass at the edge of rice fields encourages insects that parasitize a rice pest, the Brown plant hopper. (Photo courtesy of Zhongxian Lu)

Planting a mix of sesame and Leersia sayanuka grass at the edge of rice fields encourages insects that parasitize a rice pest, the Brown plant hopper. (Photo courtesy of Zhongxian Lu)

First-of-its-kind research, published in Scientific Reports by a nine-member team including UC Davis agricultural entomologist Christian Nansen, indicated that attracting alternative hosts for parasitoids of rice insect pests can help protect a rice crop. The players: a grass species, a planthopper, and an egg parasitoid.