فهرس OSP

المقالات العلمية

3 نتيجة

مقال بحثي وصول مفتوح

Productivity of Common Bean (Phaseolus vulgaris L.) and Availability of Phosphorous under Different Sources of Phosphorous

Walelign Demisie, Tesfu Mengistu, Tigist Abrham · مجلة العلوم الزراعية والبحرية · 2025 · 10.53541/2410-1079.1346

… in the world and is favored by small-scale farmers in Ethiopia to ensure food security. However, the crop yield is low due to the lesser availability of phosphorous (P) in soil caused by P fixation (formation of insoluble compounds due to reaction of P with other minerals), and use of mineral fertilizers at a rate less …

مقال بحثي وصول مفتوح

The Effects of a Fungal Biocontrol Agent and a Chemical Adjuvant on the Efficacy of Cuprous Oxide Sprays for Controlling Witches’ Broom Disease in Cocoa

J. R. M. Thacker, L.V. Laine, Ruth Mclean · مجلة العلوم الزراعية والبحرية · 2000 · 10.24200/jams.vol5iss1pp29-33

… ees located in the center of each plot. Assessments were comprised of the numbers of healthy and diseased pods observed on trees, the numbers of green and necrotic axillary and terminal brooms, and the numbers of healthy and diseased pods taken from trees at each harvest. The results show that disease incidence was the …

مقال بحثي وصول مفتوح

Oxydehydrogenation of Propane over Vanadium Oxide Supported on Kieselguhr or MCM-41

BY Jibril, Abdulazeez Yusuf Atta, Sami D. Al-Dress وآخرون · المجلة العُمانية للبحوث الهندسية · 2012 · 10.24200/tjer.vol9iss1pp46-54

… -41 was prepared using impregnation method and tested as a catalyst in propane oxidative dehydrogenation (POD). The catalyst samples were characterized using X-ray elemental analysis, Brunauer-Emmett-Teller (BET) physisorption, and Z-ray Photoelectron Spectroscopy (XPS). After impregnation, the catalyst surface area de …

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