Sadanandan, NMahapatra, I CKAU2019-07-122019-07-121975Agricultural Research Journal of Kerala, 13(1), 33-38http://krishikosh.egranth.ac.in/handle/1/5810114258A field experiment at (he Central Rice Research Institute. Cultack. Orissa State on multiple cropping conducted during the years 1967.68 and 1968-69 showed that there was a decrease in organic carbon content of soil in all cropping patterns after each cycle, the maximum decrease being noticed in continuous cultivation of rice, i. e. rice-rice cropping pattern. Among individual crops there was an increase in organic carbon content after potato and maize crops, whereas, there was a decrease after dalua and kharif rice crops.ennullArticle