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Influence of Long Term Fertilization on Soil Fertility - A Review

S Hemalatha, K Radhika, S Maragatham, and S Praveena Katharine

Long term fertilizer experiments play an important role in understanding the complex interactions involving soils, plants, climate and management practices and their effects on crop productivity. It is well recognized that long term fertilizer experiments are repositories of valuable information regarding the sustainability of intensive agriculture. The LTFE serves as an important tool to understand the changes in soil properties due to intensive cropping and continuous fertilization. Consistent use of chemical fertilizers and manures in soil alters the physico-chemical and biological properties of the soil.