000			02054nam a22003977a 4500
001			G70398
003			MX-TxCIM
005			20211006075509.0
008			121211s ||||f| 0 p|p||0|| |
020			_a92-9146-058-3
040			_aMX-TxCIM
072		0	_aF01
072		0	_aH60
090			_aLook under series title
100	1		_aTaye Tessema _uRegional Wheat Workshop for Eastern, Central and Southern Africa, 10; University of Stellenbosch, South Africa; 14-18 Sep 1998 _9725
110	2		_aCentro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Addis Ababa (Ethiopia)
245	0	0	_aQualitative and quantitative determination of weed occurrence in wheat in West Shewa Zone of Ethiopia
260			_aAddis Ababa (Ethiopia) _bCIMMYT : _c1999
340			_aPrinted
520			_aQualitative and quantitative determinations of weeds in wheat fields were conducted in West Shewa Zone during the 1995-1997 cropping seasons. The abundance, frequency, dominance, and species composition of weeds occurring in wheat in major growing areas were determined. The most frequent, abundant, and dominant weed species were Polygonum nepalense, Guizotia scabra, Galinsoga parviflora, Corrigiola capensis, Plantago lanceolata and Digitaria spp. The average values for frequency and dominance of weeds in wheat ranged between 0.4 to 79.1% and 0.01 to 20.70%, respectively. Similarity indices of weed communities in different locations were also determined to be > 60% across all locations sampled. Specific weed problems and farmers' practices to control weeds are described.
546			_aEnglish
591			_a0007|AGRIS 0101|AL-Wheat Program
593			_aJose Juan Caballero
595			_aCPC
650	1	0	_aEthiopia
650	1	0	_aProduction factors
650	1	0	_aSpecies _91274
650	1	7	_aWeed control _gAGROVOC _2 _91308
650	1	0	_aWeeds _91309
653	0		_aCIMMYT
650	1	7	_aTriticum _gAGROVOC _2 _91295
650	1	0	_91313 _aYields _gAGROVOC
700	1		_aBelayneh Admasu, _ecoaut.
700	1		_aYohannes Lemma, _ecoaut.
942			_cPRO
999			_c4490 _d4490