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- Title
Chemical and cultural control of bulrush (Scirpus maritimus L.) and annual weeds in lowland rice (Oryza sativa L.).
- Authors
Bernasor, P. C.; De Datta, S. K.
- Abstract
Chemical and non-chemical or cultural approaches for the control of <em>Scirpus maritimus</em> L. (bulrush) and of annual weeds in lowland rice were examined in the field. Herbicides such as bentazon [3-isopropyl-1<em>H</em>-H-2,1,3-benzothiadiazin-4(3<em>H</em>)-one 2,2-dioxide] and 2,4-D [2,4-dichlorophenoxy)acetic acid] effectively controlled <em>S. maritimus</em> but not the annual grasses [<em>Echinochloa glabrescens</em> Munro ex Hook. f. and <em>Echinochloa crus-galli</em> ssp. <em>hispidula</em> [(Retz.) Honda] when applied at the six- to eight-leaf stage 20-28 days after transplanting or seeding rice). <em>S. maritimus</em> was not adequately controlled when the herbicides were applied pre- or early post-emergence. A granular formulation of bensulfuron-methyl [(methyl-2-[[(4,6-dimethoxypirimidin-2-yl)aminosulfonylmethyl] benzoate)] applied 6 or 8 days after transplanting or seeding (two- to four-leaf stage of the weed) effectively controlled <em>S. maritimus</em> and the annuals <em>E. glabrescens, E. crus-galli</em> ssp. <em>hispidula</em>, and <em>Monochoria vaginalis</em>. Presl. (Burm. f.) <em>S. maritimus</em> stand was drastically reduced by shifting land preparation back and forth from wet to dry. Neither tillage intensity nor use of intermediate-statured modern rice cultivars affected the weed stand.
- Subjects
SCIRPUS maritimus; WEEDS; AGRICULTURAL pests; ACETIC acid; CHEMICALS
- Publication
Weed Research, 1986, Vol 26, Issue 4, p233
- ISSN
0043-1737
- Publication type
Article
- DOI
10.1111/j.1365-3180.1986.tb00702.x