1. Allen, S.E. (1974). Chemical analysis of ecological materials. Blackwell Scientific Publication, Oxford.
2. Baruah, M. and Mishra, R.R. (1984) Dehydrogenase and urease activities in rice field soils. Soil Biol. Biochem., 16: 423-424. https://doi.org/10.1016/0038-0717(84)90045-2
3. Casida, L.E. Jr. (1977). Microbial metabolic activity as measured by dehydrogenase determination. Appl. Environ. Microbiol., 34: 630-636. https://doi.org/10.1128/aem.34.6.630-636.1977
4. Dkhar, M.S. and Mishra, R.R. (1983). Dehydrogenase and urease activities of Maize (Zea mays) field soils. Plt. Soil. 70: 327-333. https://doi.org/10.1007/BF02374889
5. Dkhar, M.S. and Mishra, R.R. (1987). Microbial population, fungal biomass and CO2 evolution in Maize (Zea mays L.) field soil. Plt. Soil., 99: 277-283. https://doi.org/10.1007/BF02370874
6. Frankenberger, W.T. Jr. and Dick, W.A. (1983). Relationships between enzyme activities and microbial growth and activity indices in soil. Soil. Sci. Soc. Am. J. 47: 945-951. https://doi.org/10.2136/sssaj1983.03615995004700050021x
7. Hosur, G.C. and Dasog, G.S. (1995). Effect of tree species on soil properties. J. Indian Soc. Soil. Sci., 43: 256-259.
8. Jha, D.K.; Sharma, G.D. and Mishra, R.R. (1992). Soil microbial population numbers and enzyme activities in relation to altitude and forest degradation. Soil. Biol. Biochem., 24: 761-767. https://doi.org/10.1016/0038-0717(92)90250-2
9. Johnson, L.F. and Curl, E.A. (1972). Methods for the research on ecology of soil borne plant pathogens. Burgese Publishing Co., Manneapolis.
10. Kumaresan, K.R. and Francis, H.J. (2000). Impact of teak on soil properties. Paper presented during Managing Natural Resources for Sustainable Agricultural Production in the 21st Century International Conference. February 14-18, 2000. Indian Agricultural Research Institute, New Delhi.
11. Martin, J.P. (1950). Use of acid Rose Bengal and streptomycin in the plate method for estimating soil fungi. Soil Sci., 69: 215-232. https://doi.org/10.1097/00010694-195003000-00006
12. McGarity, J.M. and Myers, M.G. (1967). A survey of urease activity in soil of Northen New South Wales. Plt. Soil., 27: 246-257. https://doi.org/10.1007/BF01373391
13. Nandi, A.; Basu, P.K. and Banerjee, S.K. (1991). Indian Forester, 117: 53.
14. Nitant, H.C.; Bushan, L.S. and Inder Pal (1992). J. Trop. Forestry, 8: 31.
15. O’ Toole, P.; Morgan, M.A. and McGarry, S.J. (1985). A comparative study on urease activity in pasture and tillage soils. Commun. Soil Sci. Plt. Anal., 16: 759-773. https://doi.org/10.1080/00103628509367642
16. Pancholy, S.K. and Rice, E.L. (1973). Soil enzymes in relation to old field succession: Amylase, cellulase, invertase, dehydrogenase and urease. Proc. Soil. Sci. Soc. Acad. Am., 37: 47-50. https://doi.org/10.2136/sssaj1973.03615995003700010018x
17. Pritchett, W.L. and Fisher, R.F. (1987). Properties and management of forest soils. John Willey and Sons, New York.
18. Skujins, J. (1976). Extracellular enzymes in Soil. CRC, Critical Reviews of Microbiology, 4: 383-421. https://doi.org/10.3109/10408417609102304
19. Speir, T.W. (1977). Studies on climosequence of soils in tussock grasslands. II. Urease, phosphatase and sulphatase activities of top soils and their relationships with other properties including plant available sulphur. N.Z.J. Soil. Sci., 20: 159-166.
20. Tabatabai, M.A. and Bremmer, J.M. (1969). Use of p-nitrophenyl phosphate for assay of soil phosphatase activity. Soil Biol. Biochem., 1: 302-309. https://doi.org/10.1016/0038-0717(69)90012-1
21. Tiwari, S.C.; Tiwari, B.K. and Mishra, R.R. (1987). Temporal and depth-wise variations in urease and dehydroghenase activities and bacterial population in pineapple plantation soils. Proc. Indian Acad. Sci., 53(B): 173-176.
22. Totey, N.G.; Singh, A.K.; Bhomick, A.K. and Khatri, P.K. (1986). Indian Forester, 112: 314.
23. Vadiraj, B.A. and Rudrappa, N. (1990). Myforest, 26: 157.
24. Waksman, S.A. (1922). A method of counting of numbers of fungi in the soil. J. Bot., 7: 339-341. https://doi.org/10.1128/jb.7.3.339-341.1922
25. Walkley, A. and Black, I.A. (1934). An examination of the Degtjareff method for determining soil organic matter and proposed modification of the chromic acid titration method. Soil. Sci., 37: 29-38. https://doi.org/10.1097/00010694-193401000-00003
26. Warcup, J.H. (1950). The soil plate method for isolation of fungi from soils. Nature, 166: 117-118. https://doi.org/10.1038/166117b0