Sciences Agronomiques

URI permanent de cette collectionhttps://dspacee.univ-temouchent.edu.dz/handle/123456789/751

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PITAYA : Evaluation de la conduite culturale du Pitaya (Hylocereus undatus) : itinéraire technique, paramètres morphométriques et état sanitaire dans la Wilaya de Ain Témouchent.
(2026) Kechkeche Abdelali; Aguili Mohamed Amine; Zenasni Youcef; Abdellaoui Hadjira
Dragon fruit (Pitaya) is an emerging fruit crop with increasing economic and nutritional value. In Algeria, its cultivation remains limited. This study aims to assess the adaptation potential of this species to the agro-climatic conditions of the Aïn Témouchent Province and to investigate its technical cultivation practices. The experimental protocol involved six groups of the same variety, distributed between two series (B1 and B2) and three cutting types (Alpha, Beta and Gamma), subjected to a uniform fertilization program. Planting was carried out on 27/10/2025 for B1 and on 11/02/2026 for B2. After an initial phase under greenhouse conditions, the plants were transferred outdoors under a shade net, with progressive repotting and a pest management program. The results showed a flowering rate of 31.8% for B2, compared with 20.7% for B1. Thirteen flowering plants out of 51 were recorded, with three fertilized flowers and five successive flowering waves. The observations also highlighted the importance of controlling environmental conditions, particularly solar exposure and fertilization, in plant development. These preliminary results indicate a potential for dragon fruit adaptation to local conditions. However, multi-year trials incorporating control treatments, replications, and statistical analyses are still required to confirm these findings and to assess yield, fruit quality, as well as the crop's water and nutritional requirements.
Etude ethnobotanique des plantes médicinales utilisées dans le traitement traditionnel de l’hypertension artérielle dans la région D’Ain Témouchent
(2026) khelfa sarra hachemia; Benchohra Hadjer; CHIHAB Mounir
Phytotherapy, or treatmentusingmedicinal plants, remainsdeeplyrooted in local traditionalknowledge. This dissertation adopts an ethnobotanicalapproach to inventory the plant speciesused in the studyregion for the treatment of arterial hypertension (high blood pressure), to identify the methods of preparation and administration, and to evaluate the socio- cultural factorsinfluencingthese practices. A fieldsurveywasconductedamong the local population, enabling the collection of demographic, ethnomedical (origin and transmission of knowledge, perceivedeffectiveness, reasons for choosingtraditionalmedicine), and phytotherapeutic data. A total of 40 medicinal plant speciesbelonging to 21 botanicalfamilieswererecorded, Dominated by the Lamiaceae (24%), the Asteraceae (14%), and the Apiaceae (10%). In terms of treatment, infusion wasidentified as the main method of preparation (71%), mainlyusingleaves (43%) and aerial parts (33%).reflectingsignificantfloristicdiversity and a considerablerichness of local therapeuticknowledge. The analysis of ethnobotanical data revealedthatknowledgerelated to medicinal plants istransmittedmainlythroughfamily traditions, highlighting the fundamentalrole of cultural heritage in preserving local knowledge. The methods of use and preparationidentifieddirectlyreflect the experienceaccumulated by local populations in utilizingavailable plant resources to regulateblood pressure. The reasons for the use of phytotherapy are driven by several key factors, mainly the perceivedeffectiveness of traditionaltreatments, cultural traditions, the availability of plants in the region, and the desire to reducesideeffectscompared to modern medicine. These plants are usedeither as a primarytreatment or as a complement to conventionalmedicaltherapies. Finally, thisstudy highlights the urgent need to document and preservethistraditionalknowledge, whichisthreatened by socio-cultural changes. It alsoemphasizes the importance of furtherphytochemical and pharmacologicalresearch in order to scientificallyevaluate the effectiveness, mechanisms of action, and safety of the recordedmedicinal plants for the development of new therapeuticapproaches in the management of arterial hypertension.
Inventaire ethnobotanique des plantes médicinales employées dans la prise en charge traditionnelle des trouble thyroïdiennes dans la wilaya de Ain Temouchent
(2026) ROUANE hacene wissal; NOUGAOUI chaimaa; CHIHAB Mounir
Phytotherapy, based on the use of medicinal plants for therapeutic purposes, occupies an important place in the traditional practices of many populations. This dissertation adopts an ethnobotanical approach to inventory the medicinal plants used in the wilaya of Ain Témouchent for the traditional management of thyroid disorders, identify the methods of preparation and administration employed, and evaluate the sociocultural factors influencing these therapeutic practices. The ethnobotanical survey was conducted among 120 informants distributed across several municipalities of Ain Témouchent using a structured questionnaire. The collected data concerned the sociocultural characteristics of the participants, the plants used, the exploited plant parts, preparation methods, routes of administration, and the thyroid disorders treated. The obtained results revealed a widespread use of medicinal plants among the studied population, with a predominance of women estimated at 87% compared to 13% of men. Elderly people over 60 years old represented the most involved category in the use and transmission of traditional knowledge. The study allowed the identification of 20 plant species belonging to 14 botanical families, mainly dominated by the Lamiaceae, Amaranthaceae, and Zingiberaceae family. Hyperthyroidism (37%) and hypothyroidism (34%) were the most frequently treated disorders. Leaves were the most commonly used plant parts (46%), while infusion was the principal preparation method (52%), followed by decoction and powdered preparations. Most medicinal plants were administered orally and mainly used in dried form for better preservation. Most users reported an improvement in their health condition after using medicinal plants, confirming the importance of phytotherapy in local traditional medicine. However, some participants reported side effects or lack of efficacy, highlighting the need for further scientific studies to validate the efficacy and safety of the recorded species. This study highlights the richness of the ethnobotanical heritage of the Ain Témouchent region and confirms the importance of phytotherapy in the traditional management of thyroid disorders. It also emphasizes the necessity of preserving this ancestral knowledge and encouraging further scientific research to promote local medicinal plants.
Diagnostic et évaluation de la dégradation des sols par le lixiviat du Centre d'enfouissement Technique (C.E.T.) de Sidi Benadda.
(2026) BELKADI Noussaiba Aicha; BELGACEM. A
Municipal solid waste management through landfilling generates highly polluted leachates rich in organic matter, dissolved salts, and heavy metals, posing a severe threat to ecosystem sustainability in semi-arid zones. This introductory research work evaluates and diagnoses the potential impact of these effluents on the degradation of six agricultural soil horizons located near the Sidi Benadda Landfill (CET) in the Wilaya of Aïn Témouchent. The assessment of the intrinsic vulnerability of these soils, based on their physicochemical, geotechnical, and structural properties, reveals highly heterogeneous behaviors regarding pollutant migration or retention risks:  High Resilience Zones: Soil 6 emerges as the most resilient profile. Its exceptionally high organic matter (OM) content (9.02%) combined with high porosity (57.0%) grants it an excellent adsorption capacity, allowing it to act as a protective natural filter against contaminant migration.  Critical Vulnerability Zones : Conversely, Soil 2 exhibits the highest environmental risk. Its extreme depletion in organic matter (1.29%), low porosity, and fragile structural stability severely limit its buffering capacity, promoting either vertical pollutant leaching toward the groundwater or lateral runoff.  Intermediate Dynamics : Soils 1, 3, 4, and 5 displays satisfactory organic matter levels (between 4.7% and 6.3%). However, a strong negative correlation (-0.82) between clay activity and organic matter indicates that a higher clay fraction in certain profiles tends to reduce permeability while diminishing overall retention capacity. Furthermore, the high porosity of Soil 1 (59.1%) raises concerns regarding rapid transport under massive pollutant loads. Given these risks of structural and chemical degradation, and despite the presence of an on-site leachate treatment plant, a regular monitoring network for both soils and groundwater is imperative. Finally, sustainable management practices - such as applying organic amendments to nutrient- deficient profiles like Soil 2 - are strongly recommended to enhance filtration capacity and restore the fertility of this agricultural heritage.
Evaluation de l’effet antifongique de trois plantes médicinales -le myrte, le lentisque et la rue fétide – contre les champignons pathogènes ( Botrytis cinerea , Aspergillus niger et Penicillium expansum
(2026) MÉÇABIH Aya Anfal; MESSAOUD Marwa; AISSET Amal
Medicinal plants constitute an important source of bioactive compounds and represent a promising alternative to chemical products used in the control of pathogenic agents. The aim of this study was to evaluate the antifungal activity of essential oils extracted from three medicinal plants: Myrtus communis (myrtle), Pistacia lentiscus (lentisk), and Ruta chalepensis (fringed rue), due to their numerous biological properties and in order to propose a natural alternative to chemical fungicides used against phytopathogenic fungi. The extraction of essential oils from the selected plants was carried out by hydrodistillation. Antifungal activity was evaluated using the disc diffusion method against three phytopathogenic fungi: Aspergillus niger, Penicillium expansum, and Botrytis cinerea. The results showed extraction yields of 0.375%, 0.17%, and 1.39% for myrtle, lentisk, and fringed rue, respectively. They also revealed variable sensitivity of the tested fungi to the studied essential oils, as evidenced by the largest inhibition zone produced by the essential oil of Myrtus communis against Penicillium expansum (28 mm), followed by that of Pistacia lentiscus (15 mm), which also exhibited interesting activity against Aspergillus niger (15 mm) and Botrytis cinerea (11 mm). In contrast, the essential oil of Ruta chalepensis showed no inhibitory effect against Botrytis cinerea and Aspergillus niger, while a weak activity was observed against Penicillium expansum (7 mm). The findings of this study indicate that the essential oils of Myrtus communis and Pistacia lentiscus possess promising antifungal activity against the phytopathogenic fungi studied and could be valorized as natural alternatives to chemical fungicides for the postharvest preservation of food products.
Diagnostic des pratiques culturales et des contraintes de production de l’orge dans la wilaya d’Ain Témouchent : perspectives d’amélioration de la durabilité
(2026) Labdelli Kheira; Mahimda Riham; Benahmed Chekroun Meryem
Barley (Hordeum vulgare L.) plays a strategic role in Algerian cereal farming, serving as an essential grain and fodder resource, especially in semi-arid areas like the Aïn Témouchent province. However, this crop remains highly dependent on climate conditions and relies on conventional farming methods, the agronomic, economic, and environmental limits of which are still insufficiently documented at the local level. This study aims to provide an overview of barley farming practices and production constraints in this province, in order to identify opportunities for improving the sustainability of production systems. A field survey was conducted among 80 cereal farmers across seven communes representative of the province’s agroclimatic diversity. The data, collected using a structured questionnaire, were processed with Microsoft Excel. The results reveal an aging farming population (76.3% over 55 years old) with low education levels, using largely conventional technical methods: medium-depth plowing is dominant (76.3%), almost exclusive monoculture of the Saïda 183 variety (93.8%), seeding density below recommended levels (117.1 kg/ha), and flat-rate, unplanned fertilization. Water deficit (60.0%) and input costs (35.0%) are the two main reported constraints, in a context where access to agricultural credit is almost nonexistent (2.5%). The median observed yield is 22 qx/ha, well above the national average, but irrigation provides a +60% gain compared to strictly rain-fed conditions, while direct seeding shows higher yields than conventional plowing. The sustainability analysis highlights signs of weakening across the environmental, economic, and social dimensions, as well as a significant gap between awareness of conservation agriculture (43.8%) and its actual adoption (16.3%). These results support the cautious expansion of irrigation, the gradual adoption of no-till farming and suitable crop rotations, as well as stronger training and access to agricultural financing.
es effets synergiques antimicrobiens et antioxydants du café (Coffea spp.) et du galanga (Alpinia galanga) : de l’usage traditionnel à la preuve scientifique
(2026) Chohra ferielle; Bouderwa fedwa; Hamed djahira
This study aims to evaluate the antioxidant, antimicrobial, and synergistic effects of methanolic extracts from Coffea arabica and Alpinia galanga in order to scientifically validate their traditional use. The extracts were obtained by maceration in a methanol/water mixture (80:20) and subsequently characterized in terms of extraction yield, phenolic composition, and biological activities. Extraction yields were 5.90% for C. arabica and 1.16% for A. galanga. Phytochemical analysis revealed high levels of total polyphenols (233.07 mg GAE/g for C. arabica and 383.84 mg GAE/g for A. galanga) and flavonoids (16.36 ± 3.85 mg QE/g and 50.90 mg QE/g, respectively). Antioxidant activity assessed using the DPPH assay, demonstrated significant radical scavenging capacity, with IC₅₀ values of 372.54 µg/mL for C. arabica and 72.21 ± 1.78 µg/mL for A. galanga. Antimicrobial activity was evaluated using the agar well diffusion method and determination of minimum inhibitory concentration (MIC) against several pathogenic strains, including Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Bacillus cereus, and Candida albicans. The results showed notable inhibitory activity, with inhibition zones reaching up to 25 mm for A. galanga and MIC values varying depending on the strain. The synergistic effect, evaluated using the checkerboard method, revealed total synergy (FICI ≤ 0.5) against certain strains, particularly Klebsiella pneumoniae, as well as partial synergy or antagonism depending on the microorganism. The combination of extracts significantly reduced MIC values. In conclusion, these extracts exhibit promising biological properties and a significant synergistic potential for pharmaceutical, food, and cosmetic applications.
Contribution à l'étude de l'infestation de l'olivier par la teigne de l'olivier à travers les pièges dans la région d'Ain Temouchent
(2025) DBEBINA, ABDELILLAH; BENOUADAH, MOHAMED; Ilias, Faiza
The olive tree (Olea europaea) is a key crop in the Mediterranean basin and plays a significant role in Algeria, especially in the Aïn Témouchent region. This thesis aims to contribute to the study of olive tree infestation by the olive moth (Prays oleae) through the use of a geodatabase to map infestation hotspots and assess the effectiveness of integrated pest management methods. The adopted approach combines a bibliographic synthesis, a bioecological analysis of the pest, and field observations. The results highlight the necessity of implementing sustainable and integrated management practices to reduce economic losses and safeguard olive groves.
Etude sur les pratiques d’utilisation du caroubier par les habitants de la region d’Ain Témouchent
(2025) Himouri, Hamida; Sebie, Soumia; Belgacem, Amel
The carob tree (Ceratonia siliqua), an evergreen tree or shrub from the Fabaceae family, is a Mediterranean species domesticated over 4,000 years ago. It is highly valued for its sugar-rich pods, which are 90% pulp and 10% seeds, making them incredibly versatile. This tree plays a significant ecological role due to its remarkable ability to adapt to water scarcity, making it ideal for reforestation in arid and degraded areas. Economically, the carob tree is immensely important because of its diverse industrial applications in the agri-food, medical, cosmetic, and chemical sectors. In Algeria, while carob cultivation is primarily found in the Saharan Atlas, it often remains marginal. According to FAO statistics for 2020, Algeria was the fourth-largest global carob producer, with an estimated 3,280 tons, accounting for about 6.6% of the total global output. These figures highlight the resource's importance and show it deserves more attention for its significant socio-economic and agro-ecological value.
Production durable et biologique de Safran Valorisation d’une culture à haute valeur ajoutée. (Safran naturel).
(2025) Boudlal, Nourdine; Boulfedaoui, Khadîdja Sarah; Belhacini, Fatima
Natural saffron (Crocus sativus L.) is a highly prized aromatic and medicinal plant whose chemical composition is rich in antioxidants such as crocin and safranal, making it an effective ingredient in cosmetics. Saffron is used in skin care because of its anti-inflammatory and regenerative properties, and helps to brighten the skin, reduce wrinkles and treat dark spots. Its natural appeal lies in the fact that it is a safe, non-irritating botanical ingredient, which means it can be used in cosmetic creams, soaps and floral waters.
Extraction et valorisation des huiles essentielles de Ricinus communis L pour l'industrie pharmaceutique et cosmétique
(2025) Bouramena, Fatima Zohra; Belhadji, Hassen; BELHACINI, Fatima
Ricinus communis, commonly known as castor, is a medicinal plant well known for its therapeutic properties and is widely distributed across various regions of the world. Its essential oil is extracted from the seeds and is rich in ricinoleic acid. It exhibits anti-inflammatory, antimicrobial, and wound-healing properties. In the pharmaceutical field, castor oil is used as a laxative, a carrier of active compounds, and in the manufacture of certain medications. In cosmetics, it is used in creams, ointments, hair oils, and skincare products due to its nourishing and regenerative effects. The valorization of this oil supports local plant resources and promotes innovation in natural product development. In this study, we first extracted the oil as the primary product, then developed a cream formulated for treating eczema and reducing skin inflammation. This cream was tested on several individuals, and the results showed significant effectiveness in relieving symptoms and improving skin condition.
Composition biochimique globale et évaluation nutritionnelle de la chair du tilapia rouge (Oreochromis sp) élevé au niveau de la ferme piscicole d’eau douce Sarl Iyad Fish, Wilaya d’Ain Temouchent.
(2025) BENATIA, Khadra Nassima; ELMGUENNI, Amina; BOUFEKANE
In the context of diversifying food sources and strengthening nutritional security, red tilapia (Oreochromis sp) represents a major aquaculture species of interest in Algeria. The present study, conducted in collaboration with the Experimental Station for Aquatic Resources of Beni-Saf (CNRDPA) and the Technical Platform for Physico-Chemical Analysis of Ouargla (PTAPC Ouargla, CRAPC), is part of an effort to enhance the nutritional quality of this species, farmed in a recirculating aquaculture system (RAS) at the Sarl IYAD Fish farm (Ain Temouchent Province). The main objective of this work was the biochemical and nutritional evaluation of red tilapia fillets through the determination of several parameters: moisture, protein, lipid and ash content; fatty acid profile; amino acid composition; and concentrations of essential minerals (P, K, Mg, Ca, Fe, Cu, Zn, Mn, Se). Statistical comparisons were also made based on the size and sex of the 54 individuals collected between February and April 2025, including 26 males and 28 females. The analyses revealed that the flesh is very rich in high-biological-value proteins, with a marked concentration of essential amino acids (lysine, leucine, arginine, threonine and valine), and low in fat, predominantly composed of monounsaturated fatty acids (oleic acid). Although present in smaller proportions, omega-3 polyunsaturated fatty acids (EPA, DHA) provide the product with significant dietary value. Furthermore, the results showed appreciable levels of essential minerals such as phosphorus, potassium, magnesium, calcium, iron, and zinc, positioning red tilapia as a relevant food source for addressing certain nutritional deficiencies. The overall observed nutritional quality, combined with the species’ good adaptability to local farming conditions, highlights the potential of red tilapia in the development of sustainable aquaculture in Algeria. This study provides reference data valuable for the valorization strategies of fishery products while promoting the consumption of a local, accessible, and health-beneficial fish.
Influence des conditions climatiques sur l’évol ution de la culture de l’olivier de la région de Ain Tém ouchent
(2025) BELMOKHTAR, Manel; BENHADDA, Sarra; BELGACEM, Amel Fatima
This researchfocuses on studying the impact of climatic conditions on the development of olive cultivation in the Wilaya of AïnTémouchentbetween 2010 and 2021. The olive treeis one of the most important fruit trees in Mediterraneanregions due to itsability to resistdrought and adapt to harshclimatic conditions. However, recentclimate changes — particularlyrisingtemperatures and decreasingrainfall — have significantly affected olive production. This studyisbased on the analysis of climatic data (temperature and rainfall) and olive production statistics over an eleven-yearperiod to evaluate the relationshipbetweenclimatevariability and olive yield. It also examines the evolution of cultivated areas and the irrigation techniques used in the region. The results show thatreducedprecipitation and increasedtemperatureshad a negative impact on production, highlighting the need for alternative solutions such as improvedsupplementary irrigation and the adoption of sustainable agricultural practices to preservethisstrategiccrop.
Relation entre le mildiou et la fertilisation azotée de la vigne Dans La région d’Ain Temouchent
(2023) Bailiche, abir; Rouidi, nouhaila liela; Abdellaoui, Hadjira Houria
Contribution à l’étude morphométrique de la culture d’oignons dans la region d’Oulhaça
(2023) Bahi, Ilham; Abdellaoui, Hadjira Houria
Contribution à l’étude de l’application des mycorhizes sur les cultures maraichères : cas de la pomme de terre Solanum tuberosum L
(2024) SISSOKO, Mohamed Salif; ABDELLAOUI, Houria Hadjira
Etude ethnobotanique d’oignon blanc d’Oulhaça Dans la région d’Ain Temouchent
(2021) Boulenouar, Fatima Zohra; Berdane, Maroua Riane
Optimisation des méthodes d’extraction et caractérisation de la phycocyanine extraite à partir de la spiruline Algérienne et sa concervation
(2023) SEKLAL, ATIKA; BEN AISSA RAHAL, SOUAD; LAFRI, I
Spirulina.platensis, more commonly called Spirulina, is a blue-green algae by the presence of chlorophyll (green) and phycocyanin (blue) contained in phycobilisomes. Our work focuced first of all one the caracterisationofSpirulinastrains Algeria ,(region of bnisaf).then, we evaluated several methods of exraction for obtained of a good mass of thephycocyanin Six methods were tested on theSpirulinastrains considerd: by water, freezing, solvent, sonification,double phase aqueous separation and maceration with glycerol showed that the extraction by double phase aqueous separation gave a good concentration (1.8mg / ml) The second part of our work focused on the comparison of the extraction yield of the westernstrain while preserving on the one hand, its intrinsic qualities, and on the other hand, to be able to deduce afterwards, the optimal method in terms of yield Finally, our study allowed us to compare between the methods of extraction of phycocyanin from Spirulinaproduced in western Algeria with a view to optimization.
Contribution à l’étude de l’impact du compost sur le développement végétatif de la culture de tournesol
(2023) BOURTAL ZAARAT, DJIHANE; Haddou, Zoubir
The present study aims to study the effect of different doses (T0 without compost; T1= 100grams of compost; T2= 200 grams of compost and T3= 300grams) of compost, natural fertilizer along the length of the stem and the length of the leaves of the sunflower crop.Compost was prepared from sheep and nettle manure, the test site and the location of the sunflower crop was at the farm level of demonstration and production of seed from Sidi Bel Abbes (ITGC). After amending the compost at different doses, ratings were taken for study. Statistical analysis with statistica 10.2 software variance analysis was performed to confirm our results. The doses that have proven to be the most interesting doses are T2 and T3 treatment
Impact des techniques culturales simplifiées sur le stress hydrique des céréales
(2023) Boukraa Betteyeb, Mohamed; Lahcen, Oussama; Abdellaoui, Hadjira
Cereal cultivation is an essential component of Algerian agriculture. It is primarily carried out under rainy conditions and occasionally receives supplementary irrigation. Water stress is a significant problem, particularly affecting cereal crops. To counter this stress, various measures are implemented, including the application of simplified agricultural techniques, which are the subject of our study. We have measured and compared the impact of water stress on phenological parameters and yield components of cereals under different cultivation practices, The results showed that simplified crop management under vegetative cover had an impact on water stress and consequently on all measured variables. Conservation practices could be a commendable alternative to intensify localized cereal farming in arid and semi-arid regions where water is a limiting factor.

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