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001			67408
003			MX-TxCIM
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022			_a0098-0331
022			_a1573-1561 (Online)
024	8		_ahttps://doi.org/10.1023/A:1020525521180
040			_aMX-TxCIM
041			_aeng
100	0		_aZeyaur R. Khan _933647
245	1	0	_aControl of witchweed Striga hermonthica by intercropping with Desmodium spp., and the mechanism defined as allelopathic
260			_bPlenum Publishing Corporation, _c2002. _aUnited States of America :
520			_aDuring investigations into the control of insect damage to maize crops in subsistence farming in Kenya, which involved intercropping with repellent plants, the fodder legumes silverleaf (Desmodium uncinatum) and greenleaf (D. intortum) were also found to reduce dramatically the infestation of maize by parasitic witchweeds such as Striga hermonthica. This effect was confirmed by further field testing and shown to be significantly greater than that observed with other legumes, e.g., cowpea, as were the concomitant yield increases. The mechanism was investigated, and although soil shading and addition of nitrogen fertilizer showed some benefits against S. hermonthica infestation, a putative allelopathic mechanism for D. uncinatum was observed. In screenhouse studies, a highly significant reduction in S. hermonthica infestation was obtained when an aqueous solution, eluting from pots in which D. uncinatum plants were growing, was used to irrigate pots of maize planted in soil seeded with high levels of S. hermonthica. Growth of the parasitic weed was almost completely suppressed, whereas extensive infestation occurred with the control eluate. Laboratory investigations into the allelopathic effect of D. uncinatum, using samples of water-soluble chemical components exuded from cleaned roots, demonstrated that this involved a germination stimulant for S. hermonthica and also an inhibitor for haustorial development.
546			_aText in English
650		7	_2AGROVOC _925586 _aAllelopathy
650		7	_2AGROVOC _91173 _aMaize
650		7	_2AGROVOC _91279 _aStriga
650		7	_2AGROVOC _933648 _aDesmodium
650		7	_2AGROVOC _92912 _aNitrogen
650		7	_2AGROVOC _931063 _aShading
650		7	_2AGROVOC _94740 _aGermination
700	0		_933649 _aAhmed Hassanali
700	1		_928937 _aOverholt, W.A.
700	0		_933650 _aTsanuo M. Khamis
700	1		_94942 _aHooper, A.M.
700	1		_914799 _aPickett, J.A.
700	1		_920264 _aWadhams, L.J.
700	1		_933651 _aWoodcock, C.M.
773	0		_tJournal of Chemical Ecology _dUnited States of America : Plenum Publishing Corporation, 2002. _gv. 28, no. 9, p. 1871–1885 _x0098-0331
942			_cJA _n0 _2ddc
999			_c67408 _d67400