Interaction of some ecological factors and their role in the dynamics of occurrence and development of cryptogamic diseases in sunflower

Changes during 1981-1983 in the health status of sunflower crops, occurrence of some new pathogens (particularly Diaporthe helianthi, Phomopsis helianthi Munt.Cvet. et al.) caused outbreaks at epiphytic levels. In the present report the action of some ecological factors is analyzed, their interactio...

Full description

Saved in:
Bibliographic Details
Published inProbleme de protectia plantelor (Romania) Vol. 12; no. 2
Main Authors Csep, N, Iliescu, H. (Institutul de cercetari pentru cereale si plante tehnice, Fundulea (Romania))
Format Publication
LanguageRomanian
Published 1984
Subjects
APLICACION DE FERTILIZANTES
BOTRYTIS
CONDICIONES AMBIENTALES
CONDITION DE MILIEU
ENFERMEDADES FUNGOSAS
ESPACEMENT
ESPACIAMIENTO
FERTILISATION
FONGICIDE
FUNGICIDAS
HELIANTHUS ANNUUS
LUCHA INTEGRADA
LUTTE INTEGREE
MYCOSE
PHOMOPSIS
SISTEMAS CON BARBECHO
SYSTEME JACHERE
Online AccessGet more information

Cover

More Information
Summary:Changes during 1981-1983 in the health status of sunflower crops, occurrence of some new pathogens (particularly Diaporthe helianthi, Phomopsis helianthi Munt.Cvet. et al.) caused outbreaks at epiphytic levels. In the present report the action of some ecological factors is analyzed, their interaction and role in reducing yield losses. Occurrence and evolution of infections by fungi Phomopsis helianthi, Alternaria spp., Botrytis cinerea, were strongly influenced by the specific evolution of climate conditions, during the experimental years. Technical factors presented (planting time, crop density, regime of mineral nutrition, soil labour, applying fungicide treatments at optimum timing during the season and pest control) influence the state of resistance and limit the influence of pathogens.
Bibliography:8600427
H20