derris

"We took a boat trip to visit some small islands off the coast. "

"Harvest is usually very damp and rainy."

"The hiking trail heads southwest, away from the town. "

"Most farmers in this region cultivate maize."

"The accused refused to reveal the source of the illegal drugs she was selling."

"The new student was a natural from Japan. "

"The farmer used insecticide to kill the bugs eating his crops. "

"The school picnic is located in the southeast corner of the park. "

"The teacher's calm and pacific demeanor helped the students relax during the stressful exam. "

"The gardener sprayed the roses with rotenone to kill the aphids. "

"The farmer planted leguminous crops like soybeans to improve the soil's nitrogen content. "

"Prices climbed steeply."