Effect of fentrazamide on the growth, morphology and anatomy of Echinochloa crus-galli and Echinochloa oryzicola

Abstract

The effects of fentrazamide [4-(2-chlorophenyl)-N-cyclohexyl-N-ethyl-4,5-dihydro-5-oxo-1H-tetrazole-1-carboxamide] on the growth and morphology of Echinochloa crus-galli (L.) Beav. and Echinochloa oryzicola Vasing. were investigated. Fentrazamide at 250 g a.i. ha Ϫ1 showed high efficacy on weeds up to the 3-leaf stage. The growth of the subsequent leaves was retarded by the herbicide and dark green coloration appeared, and then the basal part of leaf sheathes underwent necrosis. The cell elongation and cell division of Echinochloa spp. were inhibited by fentrazamide. These effects were also observed on plants treated with mefenacet [2-(2-benzothiazoyloxy)-N-methyl-N-phenyl-acetamide].

Dissipation studies of fentrazamide (YRC-2388) in soil under anaerobic condition

“…in paddy fields and can be used as a pre-emergent herbicide and inhibits seedling growth by inhibiting cell elongation and cell division. 3,[14][15][16][17][18] Very little studies on the fentrazamide residues in soil, crop, plant, animal and multi-residue have been reported. [19][20][21][22][23][24][25][26][27][28][29] No study has yet reported on dissipation of fentrazamide from the hot and humid sub tropical climate and Tarai region soils of Indian conditions.…”

Degradation of Fentrazamide Herbicide in Soil Under Aerobic Condition

“…ha -1 ) (Ito 2008;Chhokar et al 2006) and have excellent efficacy as pre-emergent herbicide against grasses, annual sedges and broad leaf weeds in transplanted rice (Tomlin 2002). The selective action mechanism of fentrazamide between rice and weed species has not been clarified yet, but it acts by inhibiting seedling growth by inhibiting cell elongation and cell division Böger 2003;Lim et al 2007;Ito et al 2008). Differential absorption, translocation, and metabolism have been recognized as important factors contributing to herbicide selectivity (Usui 2008).…”