Biomaterial Database

Disappearance of dislodgable residues of five organophosphate pesticides on citrus leaves and fruit during dry and wet weather in Florida. 1976

N P Thompson

Citrus leaf discs and fruit taken from trees sprayed at recommended levels and twice recommended levels with ethion, parathion, azinphosmethyl, carbophenothion, and dioxathion were shaken with water and wetting agent for removal of dislodgable residues at 0, 1, 3, 5, 7, 14 and 21 days following treatment. The first portion of the field experiment was performed during a period of no rainfall (April) and the second when there was rainfall (July) in 1973. Four replicates of 50 leaf discs and 4 fruit, respectively, were averaged from each sampling to give data reported. A gas chromatograph equipped with a flame photometric detector was used for analysis. Dislodgable residues found decreased with increasing time following application and samples from the wet period were lower than those from the dry period. Moisture and temperature could account for the differences in the two sampling period.

UI	MeSH Term	Description	Entries
D007306	Insecticides	Pesticides designed to control insects that are harmful to man. The insects may be directly harmful, as those acting as disease vectors, or indirectly harmful, as destroyers of crops, food products, or textile fabrics.	Insecticide
D009943	Organophosphorus Compounds	Organic compounds that contain phosphorus as an integral part of the molecule. Included under this heading is broad array of synthetic compounds that are used as PESTICIDES and DRUGS.	Organophosphorus Compound,Organopyrophosphorus Compound,Organopyrophosphorus Compounds,Compound, Organophosphorus,Compound, Organopyrophosphorus,Compounds, Organophosphorus,Compounds, Organopyrophosphorus
D010573	Pesticide Residues	Pesticides or their breakdown products remaining in the environment following their normal use or accidental contamination.	Pesticide Residue,Residue, Pesticide,Residues, Pesticide
D011891	Rain	Water particles that fall from the ATMOSPHERE.	Rains
D002957	Citrus	A plant genus of the family RUTACEAE. They bear the familiar citrus fruits including oranges, grapefruit, lemons, and limes. There are many hybrids which makes the nomenclature confusing.	Citron Tree,Fruit, Citrus,Lemon Tree,Orange Tree, Bitter,Orange Tree, Mandarin,Orange Tree, Seville,Orange Tree, Sour,Pomelo Tree,Pummelo Tree,Tangerine Tree,Citrus Fruit,Citrus aurantium,Citrus bergamia,Citrus grandis,Citrus hystrix,Citrus limon,Citrus maxima,Citrus medica,Citrus reticulata,Kaffir Lime,Bitter Orange Tree,Bitter Orange Trees,Citron Trees,Citrus aurantiums,Citrus bergamias,Citrus grandi,Citrus hystrices,Citrus medicas,Citrus reticulatas,Lemon Trees,Lime, Kaffir,Mandarin Orange Tree,Mandarin Orange Trees,Orange Trees, Bitter,Orange Trees, Mandarin,Orange Trees, Seville,Orange Trees, Sour,Pomelo Trees,Pummelo Trees,Seville Orange Tree,Seville Orange Trees,Sour Orange Tree,Sour Orange Trees,Tangerine Trees,Tree, Bitter Orange,Tree, Citron,Tree, Lemon,Tree, Mandarin Orange,Tree, Pomelo,Tree, Pummelo,Tree, Seville Orange,Tree, Sour Orange,Tree, Tangerine,Trees, Bitter Orange,Trees, Citron,Trees, Lemon,Trees, Mandarin Orange,Trees, Pomelo,Trees, Pummelo,Trees, Seville Orange,Trees, Sour Orange,Trees, Tangerine,aurantium, Citrus,bergamia, Citrus,hystrices, Citrus,maxima, Citrus,medicas, Citrus,reticulata, Citrus
D005431	Florida	State bounded on east by the Atlantic Ocean, on the south by the Gulf of Mexico, on the west by Alabama and on the north by Alabama and Georgia.
D013997	Time Factors	Elements of limited time intervals, contributing to particular results or situations.	Time Series,Factor, Time,Time Factor
D014887	Weather	The state of the ATMOSPHERE over minutes to months.	Fog,Fogs