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COMPARATIVE EFFECTS OF LIME, POULTRY MANURE AND NPK COMPOUND FERTILIZER ON SOIL PHYSICOCHEMICAL PROPERTIES AND YIELD OF MAIZE IN AN ULTISOL OF SOUTHEASTERN NIGERIA.
» Abstract Soil fertility decline is one of the acute problems facing farmers in the world and Nigeria in particular. The constraints to food security and widespread poverty, as they affect development and livelihoods, are well known even in Sub-Saharan region of Africa (SSA), where population growth at 3% supersedes agricultural production rate of 2% per annum (Bationo et. al, 2006). Although the causes of food insecurity and poverty are numerous, the decline in soil fertility with resultant decreasing crop yields is severally highlighted and stressed (Sanchez et. al, 1997; Smaling et. al, 1997; Bationo et. al, 2006). In Nigeria, the practice of shifting cultivation which was one of the effective methods of overcoming the problem of poor crop yield due to decline in soil fertility has virtually disappeared. This could be linked to the increasing population explosion and the stiff competition for land space by other land uses (Hati et. al, 2005). According to Ayoub (1994), population explosion added to the increased continuous farming on the available land by farmers who often do not add adequate soil nutrient supplements (organic and inorganic fertilizers) to beef up soil fertility and increase yield. ...Continue Reading »
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