000			01733nab a22003857a 4500
001			G29668
003			MX-TxCIM
008			121211b |||p||p||||||| |z||| |
040			_aMX-TxCIM
041	0		_aFr
043			_aBE
072		0	_aH10
072		0	_aH20
090			_aREP-3227
100	1		_aBayon, F.
245	0	0	_aRole des cultures de ray grass dans l epidemiologie de la jaunisse nanisante de l orge (VJNO or BYDV) en poitou charentes
260			_c1983
340			_aPrinted
500			_aTables, graphs, references p. 810-811
520			_aIn a study in Poitou-Charentes, France, on the transmission of barley yellowdwarf virus in winter barley, the relative significance of the origin of the vector Rhopalosiphum padi (L.) from spontaneous regrowth of the same crop or from rye-grass [Lolium perenne], and of the length of time spent by the aphid onthe barley, are discussed in relation to the efficiency of transmission and the severity of symptoms. In field tests involving artificial infestation, aphids with a high rate of infection originating from self-sown barley and placed at a rate of 5 aphids/plant on young healthy barley infected it with the virus within20 days, whereas aphids originating from
546			_aFrench
595			_aRPC
650	1	0	_aBarley yellow dwarf virus _91019
650	1	7	_aCereals _gAGROVOC _2 _91036
650	1	7	_aCrops _gAGROVOC _2 _91069
650	1	0	_aElisa
650	1	0	_aEpidemiology
650	1	0	_aFeed crops
650	1	0	_aLolium
650	1	0	_aRhopalosiphum
700	1		_aAyrault, J.P., _ecoaut.
700	1		_aPichon, P., _ecoaut.
773	0		_tMededelingen van de Faculteit Landbouwwetenschappen, Rijksuniversiteit _n615316 _gv. 16, no. 3, p. 807-811
942			_cJA
999			_c12082 _d12082