Identification et stratégie de lutte contre la maladie l’anthracnose du pois chiche

Abstract

Anthracnose is the most commonly reported disease in chickpea (Cicer arietinum L.), variety Flip, caused by the pathogen Ascochyta. rabiei, which is propagated mainly in the western regions of Algeria. This disease is regarded as an handicap to the development of spring chickpea sowing and therefore is a brake on improving yields. Our present study was carried out on the basis of surveys of 03 farms for chickpea cultivation including two farms in Hammam Bouhadjar and one farm in Chentouf in order to deepen knowledge on the diagnosis and macroscopic and microscopic identification. the causative agent of this disease. Moreover, our objective is to learn about the control methods used by chickpea producers through a field survey. The Results revealed the differences in the cultural and morphological characteristics of the isolates in terms of mycelium growth and sporulation in the two culture mixtures Potato Dextrose Agar «PDA» and Chickpea Seed –meal Dextrose Agar «CDA». The results of the survey carried out among producers in the study area as well as the members of the inter-professional council of the leguminous sector of the Wilaya "CWIF" showed that 50% of producers preferred for an agronomic control strategy. against anthracnose disease such as crop rotation and unlike the use of chemical control. It is noted that the majority of the producers confuse between anthracnose and other fungal diseases and this because of the similarity of the symptoms on the organs of crop (decay of the leaves, presence of spots, lesion). According to the producers, the cause of the disease is the black jelly "called" LILA "which is responsible for the disease of anthracnose.