Address: Krishi Vigyan Kendra, National Pulse Research Centre, VambanColony, Distt. Pudukottai, Tamil nadu
A fertility map is prepared where the available nitrogen, phosphorous and potassium is marked as low, medium or high. Areas of sufficient and insufficient nutrients are marked out and nutritional requirements are determined. Fertilizers such as NPK, lime or gypsum are recommended to improve soil fertility. Fertilizer addition, which is based on soil testing, usually leads to an increase in yields and profits by providing the correct amounts of needed nutrients.
Website: http://www.agritech.tnau.ac.in/kvk/kvk_pudukottai_services.html