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Nitrogen Transformations As Affected By Some Factors at Cultivated Soils In Saudi Arabia
(
Qatar University
, 2000 , Article)
The influence of serial concentration of salts (0.5, 1.0 and 1.5%), application of organic matter (0.5, 1.0 and 1.5% of wheat straw) and varying soil moisture content (50, 70 and 90%) on nitrification in sandy loam soil ...
Isolation and Characterization of Pollulan Produced by a Local Isolate of Aureobasidium Pullulans
(
Qatar University
, 2000 , Article)
A local isolate of Aureobasidium pullulans was obtained from fig leaves surface. The isolate was identified as A. pullulans on the basis of appearance of polymorphism in the colonies, melanin pigment and pullulan production ...
Treptodemus Latus and chauhnotrema spiniacetabulum (tirematoda: digenea); Hemirhamphidae, parasites of the fish, hemirhamphus marginatus from Qatari waters
(
Qatar University
, 2000 , Article)
The fish Hemiramphus marginatus recently examined from Qatari waters was found to be infected with two species of degenetic trematodes: Treptodemus latus Manter, 1961 and Chauhanotrema spiniacetabulum Nahhas ans Sey, 1998. ...
Diversity, Habitats and Seasonal Distribution of Fish in Three Protectorates of Southern Sinai on the Red Sea, Egypt
(
Qatar University
, 2000 , Article)
The present investigation is an attempt to study the diversity, habitats and seasonal distribution offish of inshore water at thirteen sites of the three Protectorates (Ras Muhammed, Nabq and Abou Galoum) of Southern Sinai ...
Urea Hydrolysis and Urease Activity in Saudi Arabian Soils
(
Qatar University
, 2000 , Article)
Soil samples were collected from eight different localities m Saudi Arabia, and analysed for mechanical properties as well as for urea hydrolysis. The urease enzyme activity of these calcareous soils was also investigated. ...