October 2009
Sustainable energy: Challenges of implementing renewable technologies
Sudan is an agricultural country with fertile land, plenty of water resources, livestock, forestry resources and agricultural residues. Energy is one of the key factors for the development of national economies in Sudan. An overview of the energy situation in Sudan is introduced with reference to the end uses and regional distribution. Energy sources are divided into two main types; conventional energy (woody biomass,...
October 2009
Effects of nitrogen fertilizer and irrigation regimes on seed yield of calendula (Calendula officinalis L.)
This research was conducted in experimental field of Islamic Azad University of Takestan branch in Iran during 2006. The experimental unit was designed by achieved treatment in factorial on the basis of completely randomized block design with fourreplicates. The nitrogen was applied to the main plots at the rate of non-application, 30, 60 and 90 kg N ha-1 and the irrigation...
October 2009
Role of arbuscular mycorrhizal fungus (Glomus intraradices) – (fungus aided)in zinc nutrition of maize
A greenhouse experiment was conducted to assess the nutritional improvement of maize plants (variety COHM5) inoculated with and without arbuscular mycorrhizal (AM) fungus (Glomus intraradices Schenck and Smith) under varying levels of Zn concentration (0, 1.25, 2.5, 3.75 and 5.0 mg kg-1). Growth (leaf area index and root morphological attributes) and nutrient status (Zn and P concentrations) were measured...
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