Studies on the effects of oxadiargyl on direct-seeded rice and Echinochloa crus-galli under drained and flooded conditions
Gitsopoulos, T.K. and Froud-Williams, R.J. (2004) Studies on the effects of oxadiargyl on direct-seeded rice and Echinochloa crus-galli under drained and flooded conditions. Weed Research, 44 (4). pp. 329-339. ISSN 0043-1737
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To link to this article DOI: 10.1111/j.1365-3180.2004.00407.x
Dose–response experiments were conducted in glasshouse pot experiments to investigate the selectivity of oxadiargyl, a recently introduced herbicide, in direct-seeded rice under both aerobic and anaerobic conditions. Crop sensitivity to oxadiargyl was comparatively greater for wet-seeded (anaerobic) than for dry-seeded rice (aerobic). Likewise, greater efficacy against Echinochloa crus-galli (L.) was also observed under anaerobic conditions. These results indicate greater activity of oxadiargyl under anaerobic conditions, but that application pre-sowing with subsequent flooding would reduce selectivity in wet-seeded rice. The results are discussed in relation to rice production in Mediterranean agriculture.
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