Volume 3 Numéro 2 (2)
- Titre : Beetles infesting pistachio (Pistacia vera L.) in Tunisia and their auxiliary fauna
- DOI :10.71751/jaaogv3i2y2024-15-28
- Auteur : Karama HADJ TAIEB, Houda GHARSALLAH, Ines KSENTINI, Andreas LECLERQUE, Haifa BEN
GHARSA, Mohamed Ali TRIKI, Mohieddine KSANTINI - Résumé : Numerous pests, like beetles, which have expanded widely due to climate change, harm pistachio crops. Using morphological and barcoding methods, we looked into the biodiversity of pistachio beetles and their parasitoids. Seven different species of insects were found in pistachio branches. Two molecular markers, the mitochondrial cytochrome oxidase I (COI) and the region (D2-D3) of the nuclear ribosomal RNA operon's 28S rRNA gene, were used to identify these insects. Five species a similarity ≥97% were identified. For the remaining two species, sequence identities did not exceed 93% and their identification was only made at the genus level. Our findings indicated
that the four following species of beetles develop on pistachio trees: Chaetoptelius vestitus (Mulsant & Rey, 1861) (Coleoptera, Curculionidae), Carphoborus perrisi
(Chapuis, 1869) (Coleoptera, Curculionidae), Phoracanthas emipunctata (Fabricius, 1775) (Coleoptera, Cerambycidae) and Sinoxylon sp. (Coleoptera, Bostrichidae). Furthermore, three species were identified as parasitizing these beetles: Doryctes leucogaster (Nees, 1834) (Hymenoptera, Braconidae), Cheiropachus quadrum (Fabricius, 1787) (Hymenoptera, Pteromalidae) and Ecphylus sp. (Hymenoptera, Braconidae). - Pagination : 15-28
- Titre : Effets de la salinité et le climat sur le potentiel reproductif de l’olivier (Olea europaea L.) soumis sous différents régimes hydriques et en pluvial en milieu aride
- DOI: 10.71751/JAAOGv3i2y2024-1-14
- Auteur : Lina Trabelsi, Kamel Gargouri, Fathi Ben Amar, Ameni Ben Hassena, Mohamed Ghrab, Olfa Elloumi, Mohieddine Ksantini, Radhia Gargouri
- Abstract : The development of competitive and sustainable olive culture faces several challenges: limited water resources in quantity and quality, increased areas of olive trees, intensification of cultivation in arid and semi-arid zones and increasing the use of water for irrigation. These require the development of practical tools to improve the sustainable water management. However, the extension of this agricultural practice involves the rate of the effect of irrigation with saline water on the plant to resist to constraining environment conditions and the proper method of irrigation. The main objective of this project was the evaluation of the impact of the application of various irrigation treatments on the phenological behavior of the olive tree in arid region. The assessment of the impact of saline water has been evaluated during dry and rainy periods. Different water regimes were applied in an arid intensive orchard (625 trees/ha). The experiment was conducted in an experimental olive grove during 2015-2017. Five treatments were applied: 100% evapotranspiration (ETc) with saline water (EC = 7.5 mS/cm), full irrigation (100% ETc) using tap water (EC = 2.46 mS/cm) and 50% ETc with two modes of intake: regulated deficit irrigation (RDI) and partial root drying (PRD) using the partial desiccation method of the rhizosphere with saline water. The monitoring concerned the phenology. In conclusion, the irrigation with saline water didn’t affect the phonological behavior with an optimal result for the regulated deficit irrigation system (RDI). The Chemlali cultivar was therefore able to adapt to the conditions of water and a saline stress.
- Pagination : 1-14
