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ARS Home » Southeast Area » Stuttgart, Arkansas » Harry K. Dupree Stuttgart National Aquaculture Research Cntr » Research » Publications at this Location » Publication #129267
Title: EFFECTS OF RICE HERBICIDES, AERIALLY-APPLIED MIDSEASON, ON FISH POND WATER.

Author
item PERSCHBACHER, PETER - UAPB
item WHITE, JEFFREY - UAPB
item Ludwig, Gerald
item MILLER, MALISA - ARS HKD SNARC
item STONE, NATHAN - UAPB

Submitted to: Book of Abstracts World Aquaculture Society
Publication Type: Abstract Only
Publication Acceptance Date: 1/21/2001
Publication Date: 1/21/2001
Citation: PERSCHBACHER, P., WHITE, J., LUDWIG, G.M., MILLER, M., STONE, N. EFFECTS OF RICE HERBICIDES, AERIALLY-APPLIED MIDSEASON, ON FISH POND WATER.. BOOK OF ABSTRACTS WORLD AQUACULTURE SOCIETY. 2001. p.523.

Interpretive Summary:

Technical Abstract: Seven, common rice herbicides, applied by air during the months of June and July 2000 were tested for possible adverse impacts from drift on fish pond phytoplankton biomass and productivity, zooplankton populations, and critical water quality variables of morning dissolved oxygen, pH, total ammonia nitrogen and nitrite nitrogen, Four treatments in four, 550-l outdoor pool mesocosms each were designed to evaluate simulated overspraying of ponds, drift at 1% and 10% of direct rates, and an untreated control. Fish pond water was pumped from an adjacent pond at the University of Arkansas at Pine Bluff Aquaculture Research Station into the mesocosms during the general time period of field application of each herbicide. Water quality measurements were made prior to application, and at 24h and 48h after application. Commercial compounds and direct rates (kg active ingredient/ha) in sequence were thiobencarb (3.52), quinclorac (0.44), halosulfuron (0.05), bensulfuron methyl (0.06), triclopyr (0.33), 2,4-D amine (1.32, and molinate (4.40). No measurable impact was detected from any compound on any water quality or plankton variable.