¹Department of Chemistry, A.V.C College (Autonomous) Mayiladuthurai, Tamil Nadu India

²Department of Chemistry, TBML College, Porayar-Nagapattinam Tamli Nadu India

 Email:-arochemmy1@gmail.com

Micronutrients, also known as “trace elements” are essential in small quantities for the growth of plants. Fe, Mn, Zn, Cu, B, Mo, Co and Cl2 are considered as micronutrients. These micronutrients may produce synergetic and antagonistic effects in plants, if they are present in excess or in deficiency level in the soil. In this study an attempt has been made to assess the micronutrient status of Fe, Mn, Zn and Cu in Nagapattinam taluk of Nagapattinam district in Tamilnadu state. Surface soil samples depth (0 – 20 cm) numbering 425 from 85 revenue villages, five samples were collected from each revenue village. The study area covers 30,231 hectares of land. The basic physico –chemical parameters pH, EC and OC were calculated in the study area. Assess the micronutrient status by using Atomic Absorption Spectrophotometer. By using the critical levels fixed by earlier workers for DTPA (Diethylene Triamine Penta Acetic acid) extractable micronutrients in Tamilnadu soils, the percentage deficiencies of individual nutrients were calculated in each revenue village. The results revealed that the order of mean status of available micronutrients was found to be Fe(5.14mg kg-1) > Mn(3.23 mg kg-1) > Cu(1.27 mg kg-1) > Zn(0.91 mg kg-1) on the average basis 65.88, 45.88, 62.22 and 86.98 percent soils were found to be deficient in Fe,Mn,Cu and Zn respectively. From the results of the analysis of soil samples, concrete suggestions can be made to improve the soil quality and crop production.