Effect of Water Solubility and Soil Moisture Upon Plant Uptake of Granulated Systemic Insecticides1
Authors: REYNOLDS, H. T.; METCALF, R. L.
Source: Journal of Economic Entomology, Volume 55, Number 1, February 1962 , pp. 3-5(3)
Publisher: Entomological Society of America
Abstract:Granulated systemic insecticides applied into the soil are more selective than conventional spray or dust applications as only certain phytophagous species are exposed. Soil moisture and water solubility of the chemicals were studied as to effect upon absorption and trans location in insecticidal quantities. The materials of very low water-solubility studied (phorate and Di-Syston®(O,O-diethyl S-[2-(ethylthio)ethyl] phosphorodithioate )) took as much as two or more weeks longer to attain aphid mortalities obtained in a few days with moderately water-soluble dimethoate (O,O-dimethyl S-(N-methylcarbamoylmethyl) phosphorodithioate) and Di-Syston sulfoxide (O,O-diethyl S-2- (ethylsulfinyl)ethyl phosphorodithioate) and water miscible OS-1886 (diethyl 2-chlorovinyl phosphate). Furrow irrigation increased the speed of absorption markedly by carrying toxicant as the moisture moves through the soil towards the roots if granules are banded between the irrigation furrow and the plant row. From these data it is theorized that compounds of extremely low water solubility move too slowly into the root zone to attain optimum insecticidal value from soil applications; conversely, readily soluble or water miscible compounds might lose effectiveness more quickly by widespread movement in the soil and thus become lost to the root zone.
Document Type: Research Article
Publication date: February 1962
- Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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