Department of Soil Science and Agricultural Chemistry, Gandhi Krishi Vegnana Kendra, University of Agricultural Sciences, Bangalore-560 065, Karnatka State, India
Online published on 3 November, 2011.
A study on the effect of captan fungicide on some important soil biochemical processes such as urea-N mineralization and other enzyme activities in 3 different soils of Karnataka revealed that it influenced the urea hydrolysis in all the soils. Nitrification was also inhibited in a dose dependent manner. The nitrification rate followed the order: neutral soil > acid soil > saline-alkali soil. Captan also influenced urease, phosphatase and dehydrogenase enzymes. Inhibition of urease (2 56 - 22.20%), phosphatase (7.69 - 19.21%) and dehydrogenase (13.16 - 46.15%) was observed with higher inhibition at higher levels (500 ppm) of captan.
Captan, urea-N, mineralization, nitrification, urease, phosphatase, dehydrogenase
