Phosphorus fertilizer recommendations for wheat in Morocco are based on the climatic regions disregarding soil P fertility. An improved fertilizer program must be based upon the soil test level. This research was conducted in order to select the best P soil test and calibrate it…
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Nitrogen (N) fertilizer recommendations are among the crucial problems to be addressed for the erratic conditions of the arid and semi-arid areas of Morocco. One potential solution to this problem for wheat is the selection of cultivars with improved N use efficiency. However, t…
The thesis contributes to the empirical literature on the possibilities for employment creation, mainly in agro'-related industries in developing countries by examining the experience of the Sudan. An attempt has been made to show the magnitude of employment that could be genera…
Greenhouse and field experiments were conducted to quantify and characterize potato (Solanum tuberosum L.) response to the interactive influences of nitrogen (N), water and Colorado Potato Beetle (CPB) defoliation stresses. Plants were subjected to N stress by applying N at 25% …
Minimizing soil nutrient losses is a way of increasing the use efficiency of soil amendments and can reduce both production costs and environmental costs. By understanding the fate of nutrients contained in soil amendments, management practices that minimize nutrient losses can …
The abundance of groundnut-nodulating rhizobia in 32 locations in Sudan with variable soil properties did not correlate significantly to either the soil chemical properties or the duration since groundnuts were last planted in crop rotations. Rhizobium isolates were obtained fro…
The winged bean, a tropical legume, is rich in protein, minerals, vitamins, and carbohydrates. It is unique among leguminous plant kinds in that every part of the plant except the roots can be eaten. There are over a thousand accessions and cultivars of winged bean. Therefore, t…
Bacterial diseases of pearl millet (Pennisetum glaucum) and sorghum (Sorghum bicolor), were found throughout northern Nigeria in a survey during the 1984 growing season. Yellow, mucoid bacterial colonies were consistently isolated from pearl millet leaves exhibiting bacterial le…
The agricultural extension service is organized in many nations to help farmers solve their home, community and farm problems. The purpose of this study is to investigate, compare and contrast the cooperative extension service in the United States (the State of Maryland and the …
Hydrophobic regions in sandy soils have been reported for citrus groves, rangelands, and golf course putting greens. Previous studies have implicated either lipids or organic acids as the causal agent for soil hydrophobicity. The present study was conducted to provide a more com…
In arid regions, water is not only a limiting factor for forage production hut the effectiveness of range improvement practices (e.g., brush control and seeding) also depend upon soil moisture conditions. Improved rainwater harvesting systems compatible, with the hydrological ph…
Scope of Study. The objectives of this study were to describe 24 selected upland cotton (Gossypium hirsutum L.) cultivars and strains from eight countries for 52 characteristics, to determine the phenotypic relationships among those entries utilizing the methods of numerical tax…
A computer model was developed primarily to help formulate irrigation strategies for areas where saline waters of questionable quality may be an option for crop production. The model estimates salt and water balance in the soil profile and predicts crop growth, given a certain i…