Journal
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
Volume 48, Issue 6, Pages 2512-2521Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jf9903051
Keywords
allelopathy; bioassay; phytotoxicity; standard target species (STS); coefficient of variation (CV); commercial herbicides; pre- or postemergence treatments; Lactuca sativa L.; Lycopersicon esculentum L.; Daucus carota L.; Lepidium sativum L.; Allium cepa L.; Triticum aestivum; Hordeum vulgare L.; Zea mays L.
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In the search for a standard bioassay of phytotoxicity for allelochemicals, 22 commercial varieties of eight plant species [four dicotyledons: lettuce (Compositae), carrot (Umbelliferae), cress (Cruciferae), tomato (Solanaceae); and four monocotyledons: onion(liliaceae), barley, wheat, and corn (Gramineae)] proposed as models for the most common weed families have been tested at different pH and solution volumes per set conditions. Nine commercial varieties selected as standard target species (STS) were tested with standard commercial herbicides to ensure their sensitivity to phytotoxic compounds. Results are discussed to establish the proper growth requirements, and sensitivity of commercial seeds of STS and to find the most suitable commercial herbicides that allow comparison with an internal standard to validate the response of potential allelochemicals.
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