Soil Research

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Lime requirement of acidic Queensland soils. I. Relationships between soil properties and pH buffer capacity
Soil Research - Tập 28 Số 5 - Trang 695 - 1990
R. L. Aitken, P. W. Moody, PG Mckinley
The pH buffer capacity of 40 acidic surface soils (pHw <6.5) was determined from soil-CaCO3- moist incubations. Buffer capacity values ranged from 02 to 5.4 g CaCO3 kg-1 soil unit-1 pH increase. Organic carbon, clay content, ECEC, 1M KCl extractable acidity and Al, and the change in CEC with pH (�CEC) were measured and correlated with pH buffer capacity. Step-up multiple linear regress...... hiện toàn bộ
Predicting pH buffering capacity of New Zealand soils from organic matter content and mineral characteristics
Soil Research - Tập 51 Số 6 - Trang 494 - 2013
D. Curtin, Stephen Trolove
Information on the pH buffer capacity of soil is required to estimate changes in pH due to acidic or alkaline inputs, and to model pH-dependent processes within the soil nitrogen (N) cycle. The objective was to determine whether a model based on soil organic matter (SOM) and mineral characteristics (clay content, extractable iron (Fe) and aluminium (Al)) would be adequate to estimate the...... hiện toàn bộ
Inhibition of soil urease activity and nitrification with some metallic cations
Soil Research - Tập 24 Số 4 - Trang 527 - 1986
DS Yadav, Vikash Kumar, Mahendra Singh
Investigations to study the effects of 14 metallic cations on urease activity and nitrification rate in Hansi clay loam (Typic Ustochrepts) were undertaken at Haryana Agricultural University, Hissar, Haryana (India). The metallic cations inhibited soil urease activity, and the order of effectiveness varied when compared at 100, 500 and 1000 ppm. Increasing levels of metallic cations advers...... hiện toàn bộ
Atmospheric dust accession in South-Eastern Australia.
Soil Research - Tập 9 Số 1 - Trang 1 - 1971
PH Walker, A. B. Costin
Reddish dust, transported by strong winds from the dry central regions of Australia, is periodically deposited in the humid eastern part of the continent. Dust sampled in snow on the Australian alps during 1968 is comparable in amount with accession reported earlier in the 1900's in New Zealand and Melbourne. The dust reported here has a median diameter of 4 pm, relatively high organic con...... hiện toàn bộ
Small-scale, high-intensity rainfall simulation under-estimates natural runoff P concentrations from pastures on hill-slopes
Soil Research - Tập 46 Số 8 - Trang 694 - 2008
Warwick J. Dougherty, David Nash, Jim Cox, David J. Chittleborough, Nigel Fleming
Rainfall simulation is a widely used technique for studying the processes, and quantifying the mobilisation, of phosphorus (P) from soil/pasture systems into surface runoff. There are conflicting reports in the literature of the effects of rainfall simulation on runoff P concentrations and forms of P compared to those under natural rainfall runoff conditions. Furthermore, there is a dear...... hiện toàn bộ
Losses of nitrogen in surface runoff from a plantation horticulture farm in coastal Queensland, Australia
Soil Research - Tập 47 Số 6 - Trang 565 - 2009
P. R. Stork, Daniel Lyons, M. J. Bell
Surface losses of nitrogen from horticulture farms in coastal Queensland, Australia, may have the potential to eutrophy sensitive coastal marine habitats nearby. A case-study of the potential extent of such losses was investigated in a coastal macadamia plantation. Nitrogen losses were quantified in 5 consecutive runoff events during the 13-month study. Irrigation did not contribute to s...... hiện toàn bộ
Effects of tillage practices on soil and water phosphorus and nitrogen fractions in a Chromosol at Rutherglen in Victoria, Australia
Soil Research - Tập 47 Số 1 - Trang 46 - 2009
Nicole J. Mathers, David Nash
Phosphorus (P) and nitrogen (N) exports from cropping areas can be greater than those from uncropped areas. Conservation farming methods, involving minimal tillage and full stubble retention, offer significant benefits to grain cropping, but may increase nutrient concentrations in surface (i.e. 0–20 mm) soils, resulting in increased risks of nutrient mobilisation and loss. The effects of...... hiện toàn bộ
Soil history and debris avalanche deposits along the Illawarra scarpland
Soil Research - Tập 1 Số 2 - Trang 223 - 1963
PH Walker
Two major periods of avalanching have occurred along the Illawarra scarpland. The older, the Scarborough formation, is characterized by a very thick, acid, weathered zone, similar to the lower mottled horizons of laterite profiles. The younger, Keira formation, has relatively shallow red and yellow earth profiles developed in it. Although its profile of deep weathering has some features in...... hiện toàn bộ
Drying temperature effects on bulk density and carbon density determination in soils of northern New South Wales
Soil Research - Tập 47 Số 8 - Trang 781 - 2009
Brian Wilson, Subhadip Ghosh, Phoebe Barnes, Paul Kristiansen
There is a widespread and growing need for information relating to soil condition and changes in response to land management pressures. To provide the information needed to quantify land management effects on soil condition, monitoring systems are now being put in place and these programs will generate large numbers of samples. Streamlined procedures for the analysis of large sample numb...... hiện toàn bộ
Management practices for control of runoff losses from cotton furrows under storm rainfall. I. Runoff and sediment on a black Vertosol
Soil Research - Tập 40 Số 1 - Trang 1 - 2002
D. M. Silburn, S. F. Glanville
Improved practices are needed to minimise soil erosion and related agrochemical transport from cotton fields during rain. We evaluated two options available to cotton growers, namely retention of surface cover and controlling wheel traffic, using simulated rain on a hill–furrow system on a well-aggregated black Vertosol. A companion paper explores effects on pesticide transport. Increasin...... hiện toàn bộ
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