Journal
JOURNAL OF WILDLIFE MANAGEMENT
Volume 74, Issue 6, Pages 1400-1404Publisher
WILDLIFE SOC
DOI: 10.2193/2009-287
Keywords
Agelaius phoeniceus; carboxin; chemical repellent; chlorpyrifos; gamma-cyhalothrin; metalaxyl; red-winged blackbird; thiram; trifloxystrobin; wildlife damage management
Funding
- Louisiana Rice Research Board
- Louisiana State University Rice Research Station
- Rice Foundation
- U.S.A. Rice Federation
- National Sunflower Association
- United States Department of Agriculture
Ask authors/readers for more resources
Nonlethal alternatives are needed to manage blackbird (Icterids) damage to rice and sunflower production in the United States. We evaluated 4 registered fungicides on rice seeds (i.e., Allegiance (R) FL, Thiram 42-S, Trilex (R), and Vitavax (R) 200 preplant seed treatments) and 2 foliar pesticides on sunflower seeds (Cobalt (TM) insecticide and Flock Buster bird repellent) as candidate blackbird repellents. Red-winged blackbirds (Agelaius phoeniceus) preferred untreated rice relative to rice treated with Thiram (P < 0.001) and Vitavax (P < 0.001), and untreated sunflower relative to sunflower treated with Cobalt (P < 0.001). Blackbirds preferred untreated sunflower relative to sunflower treated with Flock Buster repellent on day 1 of a 4-day preference test (P < 0.001). We observed no difference in consumption of treated versus untreated rice during the Allegiance preference test (P = 0.928), and blackbirds preferred rice treated with Trilex relative to untreated rice (P = 0.003). Although repellency was positively related to tested concentrations of Thiram (P = 0.010), Trilex (P = 0.026), and Vitavax (P, 0.001), maximum repellency was <50% during our concentration-response tests of these seed treatments. Repellency was also positively related to tested concentrations of Cobalt (P < 0.001), and we observed > 80% repellency of sunflower treated with Cobalt at >= 50% of the label rate. We observed no concentration-response relationship for the Allegiance seed treatment (P = 0.341) and Flock Buster repellent (P = 0.952). We recommend implementation of supplemental field studies to compare laboratory efficacy, repellency, and chemical residues of effective avian repellents throughout periods of needed crop protection.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available