Abstract
Soil fertility evaluation of Regional Research Station farm, Paiyur, Krishnagiri district, Tamil Nadu, India was done for efficient land use planning and crop production. Soil testing provides information on soil available nutrient status and serves as basis for making fertilizer prescription to crops. Soil samples were collected at 0-15 cm depth from each and every field of Regional Research Station farm, Paiyur and analysed for their nutrient status. The results revealed that the farm soils were slightly alkaline (pH 7.69) in reaction, non saline (0.06 dSm-1), low in organic carbon (0.41 per cent) and available nitrogen (238 kg ha-1), high in available phosphorus (24.8 kg ha-1) and medium in potassium (177 kg ha-1) status. The nutrient index value of organic carbon and available nitrogen were <1.66 and categorized under low fertility status. The nutrient index value for available phosphorus >2.33 and categorized under high and available potassium was 1.66-2.33 and grouped under medium category.
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