[PDF] Top 20 Directory UMM :Data Elmu:jurnal:S:Soil Biology And Chemistry:Vol32.Issue14.Dec2000:

... in soil samples taken for assay and be performed on ®eld fresh soil or soils where the biological status has been maintained as far as ...temperatures and manual handling) should be ... Lihat dokumen lengkap

... N and P released from the standing biomass and surface litter, as these nutrients should bene®t a following cereal, if the legumes are grown merely for soil fertility restoration rather than for ... Lihat dokumen lengkap

... disturbed and degraded (due to anthropo- genic activities, soil erosion, landslides, intensive agricul- ture practices) ecosystems (Ramakrishnan et ...vegetation/deforestation and subse- quent ... Lihat dokumen lengkap

... proteins and organic P compounds in the cells of soil micro-organisms rather than the cellulose of plant ...sugar and proteins precedes that of cellulose and ...micro-organisms and ... Lihat dokumen lengkap

... pruriens and Lablab purpureus can immediately bene®t from rock phosphate (RP), but as both herbaceous legumes have only limited economic value, these bene®ts are only meaningful if yields of a subsequent maize ... Lihat dokumen lengkap

... of soil organic matter under no-tillage (NT) compared to conventional tillage (CT) confers impor- tant improvements in soil quality, soil fertility and seques- tration of ...decreases ... Lihat dokumen lengkap

... chromogenic and ¯uorogenic substrates has facilitated research on enzyme activities in natural ...(Bremner and Mulvaney, 1978; Xiaobin et ...terrestrial and aqua- tic systems (Leftly and ... Lihat dokumen lengkap

... Amending soil with sewage sludge has been shown to increase the concentration of mineral N in soil (Hobson et ...Boyle and Paul, 1989; Douglass and Magdoff, 1991; Lerch et ...Serna and ... Lihat dokumen lengkap

... the soil micro¯ora is cultur- able (Bakken, 1985), and the microbial numbers obtained with the microplate techniques are ...micro¯ora and PAH degraders were estimated using the same method and ... Lihat dokumen lengkap

... Net N mineralisation studies provide information on changes in overall nitrogen cycling but, do not give any indication of gross mineralisation±immobilisation turnover (MIT) which can only be studied using isotope ... Lihat dokumen lengkap

... use and has dramati- cally reduced its Cd content (Smith, 1996) compared to the highly contaminated material applied at Woburn in the 1940s to 1960s (McGrath, ...national soil limits for the simple reason ... Lihat dokumen lengkap

... in soil which is often available in large concentrations at the end of the dry season in the semi-arid tropics and susceptible to leaching and gaseous ...in soil for a prolonged period (>1 ... Lihat dokumen lengkap

... Fractional recoveries of added glucose ranged from 0.56 to 1.03 and averaged 0.92, 0.78, 1.0, 0.93 and 0.90 for the ®ve respective sampling dates (Table 1). The one anomaly was the low recovery in the ... Lihat dokumen lengkap

... 1973. Soil Survey of Anne Arundel County, MD. USDA Soil Conservation Service, Washington ...plants and tissues and dependence on environmental factors, metabolism and invaded ... Lihat dokumen lengkap

... DEA and denitri®cation potential were higher in the humus layer than in the mineral soil ...4a and 5). Henrich and Haselwandter (1997) found deni- tri®cation to be considerably higher in the ... Lihat dokumen lengkap

... the soil organic matter at the high altitude site contained a much higher fraction of labile, non-recalcitrant C than the low altitude soil (Schmidt et ...CFE-technique and/or a non-exact conversion ... Lihat dokumen lengkap

... on soil amended with 100 ppm N was inversely related to initial residue N concentration ...ment and the total N concentration of the analyzed material must be taken into ...enrichment and the high- ... Lihat dokumen lengkap

... period and found a positive correlation between carbon ¯ows through the subsequent below- ground compartments (roots 4 carbon in the soil sol- ution 4 soil microbial biomass 4 soil residue; ... Lihat dokumen lengkap

... experiments, soil was placed in 120 ml specimen cups. In Experiment 1, soil was collected immediately after the snow had receded in ...2 and 3, soil was collected in the ...38C and a ... Lihat dokumen lengkap

... root-free soil was placed in a 1-l Mason 2 jar and adjusted to and main- tained at 240 g water kg ÿ1 content by mass with de- ionized ...temperature) and 408C (water bath) for 48 ... Lihat dokumen lengkap