00728    a2200241   4500502002400000260001500024653001400039100001400053041000700067260003100074300001000105245011900115650001400234650001700248650001600265260002200281300003800303130000700341040001400348041000700362653002800369100008900397  aThèse de Doctorat  aWageningen1 aAgronomie  aDIJST, G.  bEn  bUniversité de Wageningen  a70 p.  aThe effect of chemical haulm destruction and haulm pulling on potato black scurf caused by Rhizoctonia solani AG-3  aAGRONOMIE  aPATATE DOUCE  aDESTRUCTION  c07 Février 1989  bIll., Couv. ill. en coul. ; 24 cm  lEn  aSupport    bEn 1aProduction Végétale  uAbomey-Calavi, Université d'Abomey-Calavi, Faculté des Sciences Agronomiques, Bj