Field evaluation of Flight Control^TM to reduce blackbird damage to newly planted rice

Authors

John L. Cummings, United States Department of Agriculture, National Wildlife Research CenterFollow
Michael L. Avery, United States Department of Agriculture, National Wildlife Research CenterFollow
Owen Mathre, Environmental Biocontrol International
E. Allen Wilson, United States Department of Agriculture, Wildlife Services
Darryl L. York, United States Department of Agriculture, National Wildlife Research Center
Richard M. Engeman, USDA-APHIS-Wildlife ServicesFollow
Patricia A. Pochop, United States Department of Agriculture, National Wildlife Research Center
James E. Davis Jr., United States Department of Agriculture, National Wildlife Research Center

Date of this Version

November 2002

Comments

Published in Wildlife Society Bulletin 2002, 30(3): 816-820.

Abstract

An effective, economic, and environmentally safe bird repellent is needed to reduce blackbird (Icterinae) depredations to newly planted rice. We evaluated Flight Control^TM, a 50% anthraquinone product, as a seed treatment for newly planted rice. We treated rice seed with Flight Control at a 2% (g/g) concentration (1% active anthraquinone) the day of planting. This concentration reduced the number of blackbirds (P=0.0003) using treated fields and blackbird damage to rice seed (P=0.0124). The chemical concentration of anthraquinone on rice seed averaged 0.79% (SE=0.06%) at planting; 0.39% (SE= 0.04%) at day I, 0.34% (SE=0.05%) at day 3, and 0.41% (SE=0.06%) at day 5 post-planting. Rice seedling counts were similar between treated and untreated exclosures, suggesting that Flight Control had no phytotoxic effects to rice seed. Our results showed Flight Control to be an effective blackbird repellent that warrants further development as a management tool to reduce blackbird damage to newly planted rice and other agricultural commodities.