The temporal effects of 1-, 7-, and 14-d old Spissistilus festinus (Say) petiole girdles on trans location in soybean (Glycine max (L.) Merrill) were investigated using the systemic herbicide glyphosate as a tracer. Leaves of S. festinus-girdled, steam-girdled, and ungirdled petioles were treated with glyphosate. Diffusive resistances, leaf temperatures, and stem growth rates of treated plants were compared with those of untreated plants to detect trans location of the herbicide. S. festinus girdles initially blocked trans location. Blockage was followed by recovery of phloem function in <7 d. Resumption of trans location was not due to apoplastic transport.
Document Type: Research Article
Publication date: August 1, 1991
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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.