Nambiar, E PJacob, C INair, T JKAU2019-07-222019-07-221977Agricultural Research Journal of Kerala, 16(2), 201-209.http://krishikosh.egranth.ac.in/handle/1/5810115979Using the soil test data available in the various soil testing laboratories of Kerala State a new digital expression of soil fertility has been evolved for the formulation of more accurate fertilizer recommendations. This also facilitates easy preparation of soil test summaries and thus enable the preservation of large fund of analytical data, when available, in a concise and convenient manner.ennullDigital expression of soil fertility - A new approach to the interpretation of soil test data and formulation of fertilizer recommendationArticle