By A. Burgers (Eds.)
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PI. , 178-208. Russell, E. J. (1950). " 8th Ed. , London. Sabey, B. , Frederick, L. R. and Bartholomew, W. V. (1959). Proc. Soil Sei. Soc. Am. 23, 462-465. Sen, A. and Sen, A. N. (1956). / . Indian Soc. Soil Sei. 4, 215-220. Smith, H. W. (1961). Nature, Lond. 191, 1151-1154. Smith, N. R. and Humfeld, H. (1930). / . agric. Res. 41, 97-123. Sperber, J. I. and Rovira, A. D. (1959). J. appl. Bact. 22, 85-95. Stare, A. (1942). Arch. Mikrobiol. 12, 329-343. Starkey, R. L. (1931). Soil Sei. 32, 367-393.
As the moisture content drops to or below the wilting percentage, decomposition processes slow almost to a standstill. At 81% relative humidity, the rate of decomposition of oat straw was measured as less than 1% of that at the optimum moisture content (Table V). It is probable that at least some soils, even when in an air-dry condition, permit a very low level of respiratory activity. Negligible but nevertheless measurable production of C 0 2 has been observed by the writer for a soil containing 4-8% organic matter and holding 3% moisture following airdrying in the laboratory.
4, 215-220. Smith, H. W. (1961). Nature, Lond. 191, 1151-1154. Smith, N. R. and Humfeld, H. (1930). / . agric. Res. 41, 97-123. Sperber, J. I. and Rovira, A. D. (1959). J. appl. Bact. 22, 85-95. Stare, A. (1942). Arch. Mikrobiol. 12, 329-343. Starkey, R. L. (1931). Soil Sei. 32, 367-393. Stolp, H. and Petzold, H. (1962). Phytopath. Z. 44, 364-390. Stotzky, G. and Norman, A. G. (1961a). Arch. Mikrobiol. 40, 341-369. Stotzky, G. and Norman, A. G. (1961b). Arch. Mikrobiol. 40, 370-382. Strugger, S.
Soil Biology by A. Burgers (Eds.)