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Directorate General of Agricultural Research, Ministry of Agriculture and Fisheries

Little is known of the ecological role of only species of mangrove, Avicennia marina, in Oman. This study provides information on the physical habitat of three mangrove areas (Qurm, Mahout and Shinas) in relation to the main features of each area (i.e., community structure, soil and water analyses and biota). the climate of the three mangrove areas and surrounding regions is hot and arid: all ...

SUBJECT: paletuvier; mangles; avicennia; madera de construccion; bois de charpente

POSTED TO: Agricultural Research (Oman) [1026-0544]

Irrigation and hydraulic engineers are often faced with the difficulty of tedious trial solutions of the manning equation to determine the various geometric elements of open channels. This paper addresses the development of a computer model for the design of the most commonly used channel-sections. The developed model is intended as an educational tool. It may be applied to the hydraulic desig ...

SUBJECT: application des ordinateurs; aplicaciones del ordenador; reseau de drainage; canales; ouvrage hydraulique

POSTED TO: Agricultural Sciences (Oman) [1026-0544]

The Arabian abalone occurs in the Arabian Sea's rocky coastal zone in association with conspicuous macroalgal communities in which it represents the dominant herbivorous component. Despite such ecological importance and although the commercial exploitation of abalone presents a considerable contribution to Omani fisheries, almost nothing is known about the biology of this species. This report ...

SUBJECT: mar arabigo; biologia pesquera; mer d'arabie; haliotis; algae

POSTED TO: Agricultural Sciences (Oman) [1026-0544]

SUBJECT: woodlands; semiarid zones; prosopis cineraria; foret claire; amenagement forestier

Gallic acid and methyl ester of gallic acid have been identified as antifungal compounds against the mycelial growth of Pythium aphanidermatum from acetone-water extracts of Acacia nilotica leaves. The growth of fungus was completely ceased by gallic acid and its methyl ester at 1000 ppm and 750 ppm, respectively. Antifungal properties of both compounds were found to be higher in combination t ...

SUBJECT: fonte de semis; feuille; acacia nilotica; control de plagas; hojas

POSTED TO: Agricultural Sciences (Oman) [1026-0544]

Field experiments were conducted on tomato crops over a two year period to evaluate the efficacy of six insecticides, viz. triazophos, phosphamidon, dimethoate, buprofezin, and Aflix (endosulfan + dimethoate) each at 0.05 and Repelin (plant product insecticide) at 1 concentration along with a cultural treatment by covering the plants with Agril (a polyester material) for the control of whitefl ...

SUBJECT: dimethoate; phosphamidon; lycopersicon esculentum; insecticide; dimetoato

POSTED TO: Agricultural Sciences (Oman) [1026-0544]

113 cultivars of corn (Zea mays L.) originating from Colombia were tested for adaptability and performance in the College of Agriculture farm, Sultan Qaboos University, Sultanate of Oman. Of these, one variety failed to germinate completely. From the performance of the remaining 112 varieties, four populations were recognised on the basis of normal and brachitic (dwarf) plants and early and la ...

SUBJECT: germoplasma; colombie; germplasm; variedades; adaptacion

Field and laboratory studies were conducted in 1990 and 1991 to determine the concentrations of total nonstructural carbohydrates (TNC), crude protein, cellulose, hemicellulose, lignin and other ether extract partitioned in the leaf and stover of sorghum grown in a saline soil (EC=11.8 dSm -1). Twenty three sorghum cultivars comprising 10 female lines, 6 male lines and 7 forage lines were used ...

SUBJECT: peciolo; bioenergia; sorghum; bioenergie; feuille

POSTED TO: Agricultural Sciences (Oman) [1026-0544]

Hot weather causes heat stress in dairy cattle. The resultant decrease in milk production and reproductive efficiency can be offset by a program of cooling through shades, ventilation, evaporative coolers and spray fans. Corral shade would be consistent to be essential to reduce stress. Feed line shade will improve dry matter intake and milk production. Holding pen cooling with spray and fans ...

SUBJECT: etable; ganado de leche; rendimiento lechero; cobertizos para el ganado; metodos de crianza

POSTED TO: Agricultural Sciences (Oman) [1026-0544]