Mazen, O. A. O( 2012). Effect of Different Rates of Compost and Moisture on Microorganisms and Enzymatic Activity in Alluvial and Calcareous Soils.Egypt. J. of Appl. Sci., 27 (10) 2012 730-741
Abstract: Alluvial soil and calcareous soil samples were collected from Agriculture research station at Sakha, Kafr El-Sheikh, Governorate (N 310 00-, E 300 59-) and Nubaria, Alexanderia, Governorate (N 300 54-, E 290 51-) To study the effect of compost application with different rates (0,1,2 and 3%) under different levels of moisture (30,60,and 90% of W.H.C.) at different inocubation periods i.e.(0,1,2,3,7,14,21 and 28 days) on total count of bacteria, nitrifying bacteria count, dehydrogenase and urease activity in the, an experiment was carried out and its obtained data revealed that regardless of soil moisture content and inocubation periods treatments, the total count bacteria,nitrifying bacteria,urease activity and dehydrogenase activity increased with increasing the level of organic compost in both soils. Regardless of organic compost and inocubation periods treatments, the increasing of moisture content up to 60% of W.H.C. increased the total count bacteria, nitrifying bacteria count, dehydrogenase and urease activity in both soils. Meanwhile, the increasing of W.H.C. up to 90% of W.H.C. decreased the ofermentioned parameters in both soils. . Regardless of organic compost and moisture content treatments, the maximum values of total count bacteria, nitrifying bacteria count, dehydrogenase and urease activity were obtained at 7 days from inocubation in both soils.
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