Soil organic matters are considered as the animal and plant residues and active components of soils. The cultivation practices will cause the quick removal of organic matters in soils even in those which are not affected by erosion. This study was carried out to assess the level of soil humus in the pilot area, to investigate the positive or negative effect of humus level on soil and to introdu...

The effects of litter and humus layers on the occurrence of ectomycorrhizal sporocarps in 64 plots in six stands of Pinus sylcestris were studied. In 1990, litter and humus layers and herbaceous vegetation were removed ('sod-cutting') in plots in stands of Pinus sylvestris of different age. Removed litter and humus were added on to existing ectorganic layers ( 'sod-addition') in plots in young ...

The aim of this study was to evaluate the salinity tolerance cotton plants grown under saline stress in two substrates. experiment carried out an experimental area at Centec Cariri School Technology (FATEC Cariri), located city Juazeiro do Norte, Ceará state. A completely randomized design applied, using a 4 x 2 factorial scheme consisting four irrigation water levels (0.5; 3.0; 5.0, and 10 dS ...

The phospholipid fatty acid (PLFA) pattern was analyzed in a forest humus and in an arable soil experimentally polluted with Cd, Cu, Ni, Pb, or Zn at different concentrations. In both soil types, there were gradual changes in the PLFA patterns for the different levels of metal contamination. The changes in the forest soil were similar irrespective of which metal was used, while in the arable so...

soil organic matters are considered as the animal and plant residues and active components of soils. the cultivation practices will cause the quick removal of organic matters in soils even in those which are not affected by erosion. this study was carried out to assess the level of soil humus in the pilot area, to investigate the positive or negative effect of humus level on soil and to introdu...

Morphologica1 features of twelve humus profiles demonstrating the diversity of vegetation types present in subalpine forests were compared, together with soil fauna. Two forest stands of spruce [Picea abies (L.) Karst.] in association with bilberry (Vaccinium myrtillus L.), located at 1630 and 1880 m altitude (Mâcot-La Plagne, Tarentaise valley, Savoy, France), were studied. Morphological obser...

The effects of setting all T=0 two body interaction matrix elements equal to a constant (or zero) in shell model calculations (designated as < T = 0 >= 0) are investigated. Despite the apparent severity of such a procedure, one gets fairly reasonable spectra. We find that using < T = 0 >= 0 in single j shell calculations degeneracies appear e.g. the I =