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Soil Testing and Technology Advisory Centre (SOTAC)
Micronutrients LaboratoryAnalytical advisory for micro and secondary nutrients Soil Physics LaboratoryAnalysis and identification of soil physical constraints and technology advisory for problem soil management Decision Support System for Integrated Fertilizer Recommendation (DSSIFER) - A NEW COMPUTER SOFTWARE FOR INTEGRATED FERTILIZER MANAGEMENT TO SUSTAIN CROP YIELDSTamil Nadu Agricultural University (TNAU) has developed a new computer software named as “Decision Support System for Integrated Fertilizer Recommendation (DSSIFER)”. The software is based on the data base of all the Soil Test Crop Response (STCR) research that were completed both by TNAU and the Soil Testing wing of Tamil Nadu Department of Agriculture. It provides site-specific fertilizer recommendation for all cultivated crops of Tamil Nadu to achieve balanced fertilization based on initial soil tests. The DSSIFER generated balanced fertilization will not only help to achieve a specified crop yield target, but also to maintain sustainable soil fertility and thereby productivity. Recommendations are generated for both macronutrients viz., N, P and K and micronutrients viz., Fe, Zn, Mn, Cu, B and Mo. It also diagnoses soil disorder like soil salinity, alkalinity and acidity and gives out reclamation measures. It also evaluates the irrigation water quality and proposes alternate management to use poor quality waters in agriculture. The village level soil fertility index of all the districts of Tamil Nadu is integrated into DSSIFER, which can be used to generate balanced fertilizer recommendation for specified crops for entire village based on the average soil fertility status of that village. The village fertility index can also be updated time to time based on the soil test result data base. The DSSIFER is also integrated with Geographical Information System (GIS), where the inputs required for generating crop specific balanced fertilizer recommendation, micronutrient management and problem soil management can be obtained from the soil map of a particular region and the results can be returned to GIS for preparation of soil fertility maps, crop and site specific fertilizer recommendation maps, extrapolation of the recommendations generated for a particular site to other identified sites etc. This package is used in the Soil Testing and Technology Advisory Centre (SOTTAC) at TNAU. TNAU SOIL HEALTH CARD - A HEALTH CARD FOR MONITORING SOIL QUALITYTamil Nadu Agricultural University has developed a new Soil Health Card, which can be used to evaluate the health or quality of a soil as a function of its characteristics, water plant, biological properties and management practices. This card has been developed by the Department of Soil Science and Agricultural Chemistry, Tamil Nadu Agricultural University (TNAU), Coimbatore. This Card is a tool to help the farmer to monitor and improve soil health based on their own field experience and a working knowledge of their soils. Regular use will allow them to record long-term trends in soil health and to assess the effects of different soil management practices. It provides a qualitative assessment of soil health and the purpose is to use indicators that assess each soil’s ability to support crop production within its capabilities and site limitations. In nutshell, the “TNAU Soil Health Card” is for the farm soil as is the “ration card” for the farm family. It can be used as a document to evaluate the land for sanctioning crop and land reclamation loans and land transactions. | |||||||||||||||||||||||||||||
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