Journal of the Indian Society of Soil Science

The DTPA extractable cationic micronutrients and their relationship with some important soil physico-chemical properties were investigated in two agro-ecosystems of Golaghat district of Assam. Considering the critical limits of soil micronutrients, all the soil associations were adequately supplied with DTPA extractable micronutrients. Higher amounts of DTPA-extractable cationic micronutrients were noticed under rice land use system as compared to sugarcane land use system. Irrespective of land use, the DTPA extractable cationic micronutrients were positively correlated with organic carbon content and CEC. However, all micronutrients recorded significant negative correlation with soil pH. The DTPA-Cu content of the soil under sugarcane land use exhibited a significant positive correlation with DTPA-Zn and Mn (r=0.432* and 0.505*, respectively).