Abstract
Intensive cropping culture is a popular practice among small-scale farmers in tropical and subtropical areas, mainly in Africa. In Egypt, several years ago, Galal and Abdul-Rasool (1962) introduced intercropping as an intensive agronomic practice of possible economic impact on Egyptian agriculture. The system soybean-corn was adopted, and research compared different intercropping patterns, selection of tolerant genotypes for each partner crop and effects of population densities of plants and their distribution in the unit area. Yields of intercropping as high as 90% for corn and 60% for soybean of respective monocrops were scored. A number of field trials in sandy and fertile Nile Valley soils were carried out to study the role of associative and symbiotic BNF in the system of corn-soybean. The present study focuses on results obtained for the field trial applied in sandy soils.
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