Effects of nitrogen and water on premature ripening caused by Phoma macdonaldii

Celia Seassau (1, 2) , Emmanuelle Mestries (3) , Philippe Debaeke (1) , Grégory Dechamp-Guillaume (1, 4)

1 AGIR - AGroécologie, Innovations, teRritoires
2 INP - PURPAN - Ecole d'Ingénieurs de Purpan
3 Terres Inovia
4 ENSAT - École nationale supérieure agronomique de Toulouse

Understand how cropping management system influences sunflower premature ripening to better explain the erratic occurrence of the disease in S.W France Main headways Sunflower premature ripening syndrome (PR) is primarily caused by P. macdonaldii collar infection The disease severity is mainly influenced by crop management Cultivar susceptibility to the pathogen, high N-fertilization and rainfed management all favor P. macdonaldii infection and enhance PR

Mots clés: Phoma macdonaldii

Domaines: Agronomie

Celia Seassau, Emmanuelle Mestries, Philippe Debaeke, Grégory Dechamp-Guillaume. Effects of nitrogen and water on premature ripening caused by Phoma macdonaldii. 17th International Sunflower Conference, Jun 2008, Cordoue, Spain. ⟨hal-03538169⟩