Contribution à l’étude des facteurs favorisant le développement et la multiplication de la pyrale des dattes (Ectomyeloïs ceratonia) dans la palmeraie de Ouargla.

Abstract

The objective of this study is to determine the main factors that favour the outbreak of date borer (Ectomyelois ceratoniae) in palm groves in the Ouargla region. To do so, we opted for an investigator approach whose tool is a survey guide containing a set of questions around the objective intended for farmers from two different agro-ecosystems. The first consists of 3 palm groves representing the old oasis system, the palm grove of Béni Brahim, the palm grove of Béni Sissine and the palm grove of Béni Ouaguine; the second is represented by a new development exploitation located in the area of Hassi Ben Abdellah. We started by determining the infestation rates for different date cultivars in different environments, such as storage sites. We found that the rates are very high in old palm groves with different values for different cultivars compared to the new plantation, where the rates remain much lower. We then proceeded to determine the parameters and factors that favour the fluctuation of these rates and explain its high values in the old palm groves of the Ouargla region. Finally, we gave some recommendations to limit the damage caused by this pest.