[PDF] Top 20 Directory UMM :Data Elmu:jurnal:S:Soil & Tillage Research:Vol54.Issue1-2.Mar2000:

... all data are con- sidered. Moreover, on elaborating the data of hydraulic conductivity at saturation the coef®cients of variation obtained are higher than those from elaborations of effective soil ... Lihat dokumen lengkap

... contemporary tillage operations move soil more around than previous tillage ...of tillage, 3±11% of the net added P had left the ...of soil sampling this had increased to ... Lihat dokumen lengkap

... on soil structure are well documented and have been shown to in¯uence in®ltration (Bissett and O'Leary, 1996), aggregate stability (Chan et ...1988), soil strength (Soane, 1990), soil water ... Lihat dokumen lengkap

... Similar data were collected in 1994 and 1996, but are not shown in this ...These data show that emergence was delayed in the ...the soil. No consistent interactive effects between tillage and ... Lihat dokumen lengkap

... of soil compaction caused by the axle load depend on the antecedent soil moisture content and texture (McCormak, ...of soil to compaction may be assessed using soil and climatic data ... Lihat dokumen lengkap

... the fertility of these soils (Hall et al., 1992). However, a main concern under continuous no-till soils is soil compaction. Senigagliesi and Ferrari (1993) reported wheat (Triticum aestivum L.) and corn (Zea mays ... Lihat dokumen lengkap

... to soil surface layers and it was higher for O ‡ V/M ‡ C than for ...lowest soil organic matter losses (due to erosion and oxidation) and highest addition of crop residues, had 12 Mg ha ÿ1 more TOC and ... Lihat dokumen lengkap

... and soil temperature and daily precipitation measured on Waterman Farm are pre- sented in ...Fig. 2. In spring, soil temperature was lower than air ...bare soil tempera- ture. Differences in ... Lihat dokumen lengkap

... The most exploitative cropping system was where pre-wheat legume residues and wheat stubble were removed and no fertiliser was applied. All nutrient balances in this system were negative showing a net export of nutrients ... Lihat dokumen lengkap

... with soil properties (Lowery and Schuler, 1994; Vepraskas, ...compacted soil layer, because of its high strength and low porosity, con®nes the crop roots in the top layer and reduces the volume of ... Lihat dokumen lengkap

... Conservation tillage systems are useful to control soil degradation, but may lead to excessive soil compaction, negatively impacting crop ...loam soil (Petrocalcic Paleudoll) with a ... Lihat dokumen lengkap

... ®ne soil co- exist within the ploughed layer in proportions that depend on the cropping system (Manichon and Roger- Estrade, 1990; Coulomb et ...given soil volume in the ploughed layer changes in response ... Lihat dokumen lengkap

... native soil carbon) in agroecosystems and how carbon is allocated to soil organisms and respiration under different tillage ...residue, soil microorganisms, nematodes and respiration were ... Lihat dokumen lengkap

... the soil moisture is not optimum for timely (November) sowing of ...residual soil moisture further declines due to ...shallow tillage with countryside plough to conserve soil moisture by ... Lihat dokumen lengkap

... estimated soil loss rates in the period just before the mechanisation (1950s) and in the most recent past ...Multitemporal data (aerial photographs and digital terrain models), the revised universal ... Lihat dokumen lengkap

... between samples (46.6%) and together the ®rst two components account for almost two-thirds (64.6%) of the variation. The remaining variation is spread over eight further components. The loadings given in Table 4 show how ... Lihat dokumen lengkap

... sandy soil (Korntved, 5% clay), a sandy loam (Ballum, 8% clay) and a silty loam (Hùjer, 19% ...an S-tined seedbed harrow and a traditional ...no tillage other than the drilling which was performed by ... Lihat dokumen lengkap

... formed on wolffish, using Alpharma’s commercial oil adjuvant Alpharma-emulsified instead of FIA. Also, a lower bacterial dose was used for this challenge. The results of the challenge with the homologous A. salmonicida ... Lihat dokumen lengkap

... In view of the present results, Artemia does not seem to be the right choice to feed early stages of cephalopods. From their lipid composition and that of their natural food, it can be deduced that cephalopod paralarvae ... Lihat dokumen lengkap

... We wish to thank Aissa Soto, Patricia Aros and Edgardo Martel for their technical assistance and Enrique Madrid from Marine Harvest Mc Connell for his assistance in matters pertaining to fish health. We are grateful to ... Lihat dokumen lengkap