DSpace Collection:
https://dspace.univ-ouargla.dz/jspui/handle/123456789/10536
2024-03-28T12:25:44ZINTEGRATION DE LA PISCICULTURE A L’AGRICULTURE EN ALGERIE : CAS DE LA WILAYA DE OUARGLA
https://dspace.univ-ouargla.dz/jspui/handle/123456789/10597
Titre: INTEGRATION DE LA PISCICULTURE A L’AGRICULTURE EN ALGERIE : CAS DE LA WILAYA DE OUARGLA
Auteur(s): ZOUAKH D. E; FERHANE D; BOUNOUNI A
Résumé: As part of a pilot project to integrate Saharan fish farming to agriculture, we conducted experiments which consist on one hand in monitoring fish growth, previously introduced into irrigation ponds and on the other hand, compare agricultural yields from fish water-irrigated plots those from plots directly irrigated by borehole water. The positive results obtained from this study show that the Algerian desert has a great potential and seems to be suitable for practicing this new activity.
Description: Revue des BioRessources2016-06-01T00:00:00ZAN AUTOMATED SYSTEM FOR DATE FRUIT RECOGNITION THROUGH IMAGES
https://dspace.univ-ouargla.dz/jspui/handle/123456789/10593
Titre: AN AUTOMATED SYSTEM FOR DATE FRUIT RECOGNITION THROUGH IMAGES
Auteur(s): AIADI O; KHALDI B; KHERFI M L
Résumé: Date is a fruit with a great health and economic benefits. However, farmers plant a little number of varieties and too little are known by people. Therefore, there is an urgent need to preserve such an important cultural heritage for the next generations.In this paper, we present an automated system for date fruit recognition from their images. Specifically, we collect fifty (50) samples from seven (7) varieties, and then we take images for those samples. Afterwards, and in order to identify the visual characteristics of samples belonging to each variety, we extract shape and color features from the images.Then, we use the Support Vector Machine (SVM) classifier to optimally separate the visual characteristics of the different varieties. Later on, SVM is used to decide for a test sample the variety it belongs to. Our system presents a multitude of advantages: 1) it is able to accurately recognize dates in spite of the large variation within some varieties (intra-variation) and the small variation between some varieties (inter-variation); 2) no physical measurements are needed, and only visual characteristics of sample images are sufficient; and 3) it doesn‟t require any human intervention. Experimental results, carried out on the samples we collected, show a high recognition rate of 97.14%.
Description: Revue des BioRessources2016-06-01T00:00:00ZCARACTERES METRIQUES, MERISTIQUES ET BIOLOGIE DE LA REPRODUCTION DE Tilapia zillii (Pisces, Cichlidae) DANS LE LAC DE TEMACINE (SAHARA SEPTENTRIONAL, ALGERIE)
https://dspace.univ-ouargla.dz/jspui/handle/123456789/10598
Titre: CARACTERES METRIQUES, MERISTIQUES ET BIOLOGIE DE LA REPRODUCTION DE Tilapia zillii (Pisces, Cichlidae) DANS LE LAC DE TEMACINE (SAHARA SEPTENTRIONAL, ALGERIE)
Auteur(s): GHAZI C; SI BACHIR A; IDDER M T
Résumé: Biometric examination of 55 specimens of Tilapia zillii captured in Lake Temacine shows that males are more or less larger than females. By cons, meristic characters considered are invariable in sex function. The overall sex ratio is in favor of males (1: 0.33). It varies with time and size classes, but this variation revealed no statistical significance. Spawning is split in time; it is very intense during the warm period (March to July). In addition, the males mature earlier than females, where the size at first maturity of females corresponds to a total length of 66 mm, against 61 mm for males
Description: Revue des BioRessources2016-06-01T00:00:00ZCOMPOSITION CHIMIQUE ET BIOCHIMIQUE DE QUATRE RESIDUS DE CULTURES ET FUMIER DE FERME
https://dspace.univ-ouargla.dz/jspui/handle/123456789/10595
Titre: COMPOSITION CHIMIQUE ET BIOCHIMIQUE DE QUATRE RESIDUS DE CULTURES ET FUMIER DE FERME
Auteur(s): BOUAJILA K; BEN JEDDI F; JEDIDI N; REZGUI S; SANAA M
Résumé: Farming techniques intensification in recent decades has raised many questions about soil fertility louse. Monoculture of cereals and intensive tillage have led to soil a rapid degradation of organic matter (OM), followed by compaction and reduction of the capacity of mineralization. Therefore a lost of productivity of farming systems was observed. The use of bioressources such as crop residues in soil fertilization is a technique for bio-remediation of degraded land. Four residus (Root and foliage) of sulla (Hedysarum cornarium L.), rapeseed (Brassica napus L.), faba bean (Vicia faba L. var. Minuta (Desf.ex.Alef.) Mansf)) and durum wheat (Triticum durum Desf.) were analyzed in comparison with cattle manure as control. All crop residues were taken in June 2009, from an experimental plot located in the experimental station of the Institut Nationl Agronomic of Tunisia INAT, at Mornag (Ben Arous/Tunisia). All plant residues were characterized by a high level of organic carbon (40-44%) while that of manure was 31.75%. In the other hand, the concentration in total nitrogen was very significant for manure (2.33%) compared to the other residues which did not exceed 1%. Consequently, the C/N ratio of manure was 13.62 while the average for the other residues was about 59.62. Residues Fabaceae (sulla, faba bean) were characterized by the highest cellulose rates, respectively 35.4 and 35.5% of the OM, compared to manure which was distinguished by the lowest rate (2.35%). The lignin content varied from 7 to 19 % in the residues and manure. The neutral detergent soluble fraction has an average of 26 % for Fabaceae and 24 % for wheat and rape, whereas it was 70 % for manure. Rapeseed residues were characterized by the index of biological stability ISB lowest of 0.11 % against a rate of 0.34 % for other residues
Description: Revue des BioRessources2016-06-01T00:00:00Z