Aug. 7, 2018
Belchim Crop Protection USA has announced it will be distributing Tenchu 20SG (active ingredient dinotefuran), a leading insecticide to protect rice crops against rice stink bugs.
Rice stink bug (RSB), the primary cause of pecky rice, was first reported as a pest of rice in the 1880s. With quality becoming a bigger issue every year, rice stink bug control is critical to producing a profitable crop. Dr. M. O. (Mo) Way, Professor of Entomology at the Texas AgriLife Research and Extension Center, shared his thoughts on the major factors contributing to this problem pest.
“One of the reasons is the grain sorghum grown nearby. When the sorghum is harvested, the stink bugs move into the rice, which is heading about the same time,” said Way. “Another factor is the use of malathion as part of the Boll Weevil Eradication Program possibly killing off some of the beneficials, and a third factor is related to pyrethroids. There are a lot of pyrethroids being sprayed on multiple crops in our area, and we’re seeing problems with them. We used to have maybe four or five to seven days residual, but we’re not seeing that any longer.”
Dinotefuran, the active ingredient in Tenchu, is systemic and shows residual control of 7 to 11 days. The rate of application is 7.5 to 10.5 ounces per acre, which is equal to 0.09375 to 0.131 pounds of active ingredient per acre. With Tenchu, no more than two applications per season are needed and the pre-harvest interval is 7 days.