The study aims to compare effects of date palm density and variety on Ectomyelois ceratoniae infestations level under field conditions in the region of Ouargla (South Est Algeria).
The study was carried out in the season 2016/2017, three densities (100 trees/ha, 150 trees/ha and 200 trees/ha) and ten varities (Deglet Nour, Ghars, Degla Beida, Amariya, Azol, Tawadant, Tattiwetnouh, Sebaewdrae, Lala khdidja, Arti) were chosen from ancient palm groves in the region of Ouargla. Infestation level was calculated by observing the presence or absence of Ectomyelois ceratoniae (eggs, larvae and excrement) in dates. Obtained data were given as means and analyzed by one-way analysis of variance and Fisherï¿½s test at P ? 0,05. XLSTAT software version 2009.1.02. was used.
The results showed that density and variety had effects on Ectomyelois ceratonia infestation levels, the density of 100 trees/ha has the lowest infestation level, the verities Deglet Nour 23,12%, Sbebaewdra 22,56% and Ghars 19,47% were the most infested cultivars and sensitive on the variation densities.
Key words: cultivars; dates; date palm; date moth; infestation.
Author(s): Hammouya Fatma Zohra, Idder Mohamed Azzedine, Idder-Ighili Hakima