000			01896nam a22002057a 4500
003			UPMIN
005			20230316180653.0
008			230314b |||||||| |||| 00| 0 eng d
040			_cUP Min
100			_92930 _aMamora, Samuel Herbert T.
245			_aFloristic composition and diversity of weeds in organic rice fields in Langkong, M'lang, Cotabato
260			_aIñigo Street, Davao City _bUniversity of Southeastern Philippines _cMarch 2021
300			_a35-48 pages
520	3		_aThis study investigated the floristic composition and diversity of weeds in organic rice fields in Langkong, M'lang, Cotabato covering an area of 2.5 hectares within which 100 quadrants were randomly assigned. Identification of weeds showed thirteen species belonging to six families eight of which are annuals and five perennials comprising five broadleaf, three grass, and five sedge types. All weed species had <50% uniformity which may imply less competitiveness against rice or effective control by weed management practices. Fimbristylis littoralis and Cyperus difformis have the highest frequencies and the highest field uniformities and highest mean field densities indicating that these weeds are the most difficult to control. The weed density of fields in which the species occurred increased compared to densities from all fields for all weeds species that may mean that site-specific or management-specific factors contribute to the survival of those species. Relative abundance values showed that Fimbristylis littoralis and Cyperus difformis are the two most dominant weed species. Weed species diversity is medium and equivalent to 5 equally abundant species.
650		0	_aWeeds _92931
650		0	_aRice farming _93026
650		0	_aMindanao studies _9120
773			_tThe Southeastern Philippines Journal of Research and Development _013212 _gVolumes 26, Number 1
942			_2lcc _cAT _n0
999			_c13634 _d13634