[PDF] Top 20 Directory UMM :Data Elmu:jurnal:S:Soil & Tillage Research:Vol56.Issue3-4.Aug2000:

... chapter gives an overall view on the causes of soil degradation and the measures that can be adopted to sustain soil fertility or to remediate degraded soils. Topics mentioned include drought, ... Lihat dokumen lengkap

... secondary tillage operation, the other half of N was applied at the end of March of the following ...dry soil and then irrigated to bring the soil moisture to ®eld ... Lihat dokumen lengkap

... the soil (Casenave and Valentin, ...on soil surface roughness (overall rough- ness of the interplay between soil and the over¯ow) and thus related to the presence of barriers on the soil ... Lihat dokumen lengkap

... conservation tillage requires long-term evaluation, the effect of tillage and residue management on corn (Zea mays ...primary tillage methods (no-till (NT), fall chisel plow (CH), fall moldboard plow ... Lihat dokumen lengkap

... zero tillage either alone (ZT ÿ R) or in combination of residue retention (ZT ‡ R) the rate of N-mineralization rate decreased compared to control (Table ...conventional tillage (CT ÿ R, 4.23) to minimum ... Lihat dokumen lengkap

... on soil samples taken from a ®eld experiment 21 years old, located on a Stagnic Luvisol, with deep ripping performed with various frequencies: no ripping, ripping every 8, 4 and 2 years, and ripping ...the ... Lihat dokumen lengkap

... of soil water ...available soil properties. Thirty soil samples were taken from six different locations in Argentina between 58 and 648W and 34 and ...our data with data of two studies ... Lihat dokumen lengkap

... the soil particles, and hence produced a relatively more homogenous soil ...all tillage treatments ...three tillage systems are given in Table ...loam soil as given by Ghauman and Lal ... Lihat dokumen lengkap

... a soil con- taining 210 g kg ÿ 1 of ...silt-loam soil (Lithic Haploxeroll), but under laboratory ...experimental soil was only 70 g kg ÿ1 ...of soil aggregation, will probably be greater for ... Lihat dokumen lengkap

... the soil properties of an unploughed Eutric ...unsaturated soil incorporating a recently developed constitutive law. Model data were compared to the ®eld ...the soil was compacted down to a ... Lihat dokumen lengkap

... For this experiment, we used four plots of 4 m4 m, grouped by pairs into two larger rainfall simulation plots of 5 m10 m. The rainfall simulation plots were called K and M. Two letters were used to call each ... Lihat dokumen lengkap

... The soil sampling sites were located between the cities of Sari and Neka and were about 20 km from the Caspian ...The soil samples possessed uniform characteristics (regarding clay content and type) and ... Lihat dokumen lengkap

... After 2 years from the initiation of the experiment, undisturbed blocks (15 cm side 10 cm deep) from one to three replicate plots of all treatments were taken from the soil surface before ploughing in April. Two ... Lihat dokumen lengkap

... three tillage and crop- ping systems with two replications at each ...The soil characteristics of the sites are shown in Table ...method. Soil particle ... Lihat dokumen lengkap

... the soil was very ...to tillage and gas ¯ux ...collect soil samples from adjacent area for estimates of soil water content and total N and C ...Six soil cores were collected and ... Lihat dokumen lengkap

... wet soil, is one source of the problem. In this paper an array of soil properties was measured before and immediately after the application of a known compaction force to a wet ...on soil that was ... Lihat dokumen lengkap

... in soil strength and bulk density was less for chisel plots following wheel ...of soil con- dition and without considering the further crop response, it can be stated that system S2 (chi- ... Lihat dokumen lengkap

... affect soil structure and in®ltration, therefore in¯uencing agricultural ...on soil structure at the surface of chisel-plowed or ridge-tilled cropping systems in Pike County, OH, planted to corn (Zea mays ... Lihat dokumen lengkap

... of soil level upheaval (ridges) and leaftip lowering near the harrow tine paths is essential in understanding the covering mechanism and the effects of working depth, working speed and soil moisture ... Lihat dokumen lengkap

... with tillage treat- ments in which water draining from the soil was sampled and analysed for nitrate and other chemicals of ...of research of this kind in USA, and the second describes ... Lihat dokumen lengkap