[PDF] Top 20 Directory UMM :Data Elmu:jurnal:S:Soil & Tillage Research:Vol52.Issue1-2.Sept1999:

... in soil productivity as caused by erosion (La¯en et ...existing soil erosion± productivity models is quite ...storm-based soil erosion, solute movement over and through soil and soil ... Lihat dokumen lengkap

... elevation data similar to the models of Moore and Larson (1979) and Onstad ...elevation data, number of lines up-and-down the slope, number of readings per line, distance between lines, and distance between ... Lihat dokumen lengkap

... study, tillage effects on WSA disappeared below the 5 cm depth, except that the stability index of large aggregates (>2 mm) was higher in the 5±15 cm layer of the no-till compared with the plow till ... Lihat dokumen lengkap

... m 2 was recorded after washing and drying the weeds at 60 8 ...m 2 was ...m 2 in the ®rst two years and from 15 m 2 in each half of the weeded and unweeded plot during the third ...The ... Lihat dokumen lengkap

... drained soil on 11 and 17 July, for the 1994 and 1995 wet season (WS), ...The soil received the recommended fertilizer rates of 120 : 26 : 50 (kg ha ÿ1 ) as N : P : ... Lihat dokumen lengkap

... conservation tillage will increase the mass of soil organic matter per unit area, giving chance to sequester C and N in the soil pro®le in view of environmental ...to soil sampling at depth. ... Lihat dokumen lengkap

... powered soil core sampler used to collect undisturbed soil samples at different depths in the ®eld is ...the soil. The device was tested in the ®eld successively to collect soil samples for ... Lihat dokumen lengkap

... In 1992 a new method of soil particle-size analysis was introduced, which coupled sedimentation to gamma-ray attenuation. The theoretical possibility of an alternative for this method is here presented, which ... Lihat dokumen lengkap

... 1993). Soil activity also increased as a function of clay content (Table 1) which was attributed to the increase, from the sandy topsoil to the clayey ones, of smectite content within the clay ... Lihat dokumen lengkap

... frequent tillage practices involve the use of disk and moldboard ...saturated soil samples for 40 min (Briggs and Mc Lane, 1907) and moisture limit of maximum sensi- ...each soil pro®le at two ... Lihat dokumen lengkap

... in tillage impacts on sequestration of soil organic carbon (SOC) has increased greatly during recent ...conservation tillage does not always result in increased SOC storage ...and data ... Lihat dokumen lengkap

... years. Tillage did not affect four- year average yield or plant population of ...by tillage; however, the four-year average soybean yield was higher in the NT system compared with other tillage ... Lihat dokumen lengkap

... surface soil covered by plastic mulch was protected from raindrop impact, and thus maintained a higher in®ltration capacity than the bare or crown ...the soil portion under the mulch con- sisted of large ... Lihat dokumen lengkap

... since soil texture of the sites at Maros and Manaoag were ...the soil remained dispersed at the end of the rice-season due to high exchangeable sodium ... Lihat dokumen lengkap

... of soil properties using standard description terminology and analytical methods for classi®cation, according to soil taxonomy (Soil Survey Staff, ...of research outcomes to other rice growing ... Lihat dokumen lengkap

... where soil water becomes limit- ing in the higher rainfall areas and not limiting in the low rainfall ...loam soil in Man- ...the soil is reasonably well drained, resulting in adequate crop ... Lihat dokumen lengkap

... and 2 million ha, respectively, are rainfed (Huke, ...of soil water remaining in the dry season after the rice crop is usually adequate for a DS ...residual soil water during the period between rice ... Lihat dokumen lengkap

... reduced soil permeability (De Datta, 1981). Where dry shallow tillage can not be carried out, shortening the duration between land soaking and the ®rst harrowing may be an important measure to reduce water ... Lihat dokumen lengkap

... Where irrigation is available, inundated conditions can be maintained to grow two or three lowland rice crops a year. Where irrigation is not available, one lowland rice crop is generally grown under rain-fed conditions ... Lihat dokumen lengkap

... the research site) managed by the Northeast Regional Climate Center (Ithaca, ...for soil measurements were installed in the fourth and ®fth non-traf®cked inter-row from the plot border within 5 days of ... Lihat dokumen lengkap