Creating maps at the farm-scale is a promising approach to for an accurate understanding of true spatial variation for a range of agronomically important soil attributes. This study assessed the value of different proximal and remote sensing datasets to map topsoil and subsoil carbon, clay content, and pH across three different farms in Australia. Results showed that using a combination of remote and proximal sensing data resulted in the best models, followed by remote only, and then proximal only.
These articles are the latest published in the journal. Soil Research has moved to a continuous publication model. More information is available on our Continuous Publication page.
SR23164Effects of straw mulching, liming, and soil texture on ammonia volatilisation: a study of conventional and enhanced efficiency fertilisers
The use of no-till management practices is a key component to ensure food security and soil preservation. However, it may have disadvantages with respect to nitrogen use efficiency, including losses due to ammonia volatilisation. These losses trigger environmental, economic and human health problems. The study shows that under no-till, nitrogen losses can reach up to 62% with the use of urea. However, new nitrogen fertiliser technologies have reduced losses by more than 30% compared to urea, ensuring more sustainable agriculture.
SR23118The effect of grazing management and legumes on soil organic carbon stocks in pastoral systems relevant to the Australian Carbon Credit Unit Scheme: a critical review
There is growing interest in soil carbon as a climate mitigation strategy by the private and public sectors in Australia and globally. There is a scarcity of evidence in Australia for two of the key eligible management activities farmers can implement as part of the Australian soil carbon method for carbon sequestration. Farm-level data with credible evidence of soil carbon improvement at depth is lacking due to lack of long-term studies and shallow soil sampling.
SR23138Estimating surrogates, utility graphs and indicator sets for soil capacity and security assessments using legacy data
Legacy datasets enable a preliminary study for soil security assessment to inform future research questions. In this study, we identified potential surrogates and the use of potential indicators for the assessment of soil to support a certain role. This work is important and enables the use of potential indicators when the surrogate is not available or difficult to obtain.
SR23096Estimating the attainable soil organic carbon deficit in the soil fine fraction to inform feasible storage targets and de-risk carbon farming decisions
We argue that the term ‘potential’ soil organic carbon (SOC) storage is not quantifiable using historical and current empirical data. We propose a framework that defines an upper limit of ‘attainable’ SOC that varies with soil properties, environmental conditions and applied management practices. We conclude that continuous update of the derived attainable deficit values will be required when new datasets covering different or new management practices capable of improving the capture of carbon to soil become available.
SR23198Mechanisms driving spatial and temporal changes in soil organic carbon stocks in saline soils in a typical county of the western Songnen Plain, northeast China
The main contribution of this paper lies in exploring the driving mechanisms of changes in soil organic carbon storage over a 40-year period, based on the spatiotemporal distribution of soil organic carbon density, using random forest and structural equation models. This contribution holds significant theoretical and practical implications, providing a scientific basis for the improvement of saline-alkali soils and the development of carbon sequestration potential.
SR22246Soybean and corn yield as affected by crop rotation and surface liming under a no-tillage system
In no-tillage systems, surficial liming may induce an alkalinisation front that can be affected by lime rate, time after application, and rotation crops. Different winter plant species did not interfere with soybean and corn yield, lime effects in deeper layers, or liming need. The surficial liming was efficient in maintaining the acidity in the topper and deeper soil layers (up to 60 cm) in a soil with high buffering power, without reducing the grain yield.
SR23029Atterberg limits of baseball infield soils containing over-size particles, Part I: effect of particle size
Baseball infield soils should be tested to determine how soil water content influences their physical properties. Current test methods are not applicable to these soils, but by modifying the protocol to permit coarser sand, more accurate results can be obtained. This research will give baseball field managers and scientists more accurate data about the performance of baseball infield playing surfaces.
SR23128Fertilisation with P, N and S requires additional Zn for healthy plantation tree growth on low fertility savanna soils
Soil nutrient limitations characterise savanna soils and are one constraint on establishing productive tree plantations and enhancing economic opportunities in tropical regions. We found positive tree growth responses to phosphorus, nitrogen and sulfur fertilisation, yet unhealthy trees developed in which zinc limitation and small-scale variation in soil characteristics was confirmed. Nutrient additions to enhance tree growth will need to encompass trace elements in addition to phosphorus, nitrogen and sulfur, and consider small-scale variability in cation exchange capacity and composition.
SR23136Nitrogen and phosphorus leaching losses under cropping and zone-specific variable-rate irrigation
Irrigation and farming practices can increase nutrient leaching losses, which affects water quality. Under zone-specific management of variable rate irrigation and mixed cropping, over 5 years, drainage flux meters worked well for the well-drained sandy loam; nutrient concentrations and leaching loads generally had greater uncertainty in the poorly drained silt loam. Drainage flux meters are more reliable in the sandy loam than the silt loam.
SR23173Salt dynamics, leaching requirements, and leaching fractions during irrigation of a halophyte with different saline waters
Soil and groundwater around the world are salt affected. Saline water can be used effectively for irrigation by salt leaching to despatch the accumulated salts back to groundwater. We examine the rootzone efficiency and groundwater impacts of salt leaching to remove salts from the rootzone.
SR22260Response to soil compaction of the electrical resistivity tomography, induced polarisation, and electromagnetic induction methods: a case study in Belgium
Soil compaction was studied in this research using three different geophysical tools. We created a controlled traffic farm in Belgium that contains different zones of soil compaction and used geo-electrical methods to find out whether soil compaction can be accurately estimated using geophysics. Laboratory data were also assessed complementary to the geophysical data. We found resistivity variations and realised that soil compaction does indeed affect geophysical signals, yet a straightforward relationship is yet to be found.
SR23014Prioritising interventions for the reduction of erosion in classical gullies: a modelling study
The erosion of gullies degrades the local landscape and contributes to poor water quality in receiving bodies. Consequently, considerable effort is invested to rehabilitate gullies and prevent erosion. This study investigates the use of the MERGE gully erosion model to test different rehabilitation options to help land managers determine what the best combination of actions will be at different sites. This study considers three different gullies, demonstrating that different actions will work better at different sites.
SR23070Revised emission factors for estimating direct nitrous oxide emissions from nitrogen inputs in Australia’s agricultural production systems: a meta-analysis
Greenhouse gas emissions from agriculture contribute 15% of the official national account. Nitrous oxide is a major greenhouse gas and is primarily emitted from soils. With a Global Warming Potential nearly 300 times that of carbon dioxide, it has major impact on climate change. Nitrogen applications in the form of fertilisers, crop residues, urine and dung are the primary contributors to these emissions. The study assembled nitrous oxide emissions data from Australian agriculture that has been collected over the past 2 decades to provide accurate emission factors for the national account.
SR23102Long-term effects of olive mill waste waters spreading on the soil rhizospheric properties of olive trees grown under Mediterranean arid climate
Olive tree cultivation is an important activity in the Mediterranean basin. Olive mill waste waters (OMWW) constitute a serious environmental problem. Current Tunisian legislation encourages OMWW spreading on soil for increasing the crop yields and preventing the potential detrimental effects on the environment. Our study showed that OMWW application to the soil in an olive orchard at 50 m3 ha−1, since 2004, had no negative effects on the tree’s vegetative growth and satisfied plant with P, K and N requirement.
These articles have been peer reviewed and accepted for publication. They are still in production and have not been edited, so may differ from the final published form.
Changes of Soil Carbon along a Topo-climatic Gradient in Rangelands of Iran: Insights from 14C Mean Residence Time and δ13C
Response of microbial community diversity and the abundance of nitrogen-cycling genes to Bacillus subtilis application in mulberry field soil
Sunlight can have a stronger influence than air temperature on soil solarisation: Observational evidence from Australia
Effects of biobased fertilisers on soil physical, chemical and biological indicators – A one-year incubation study
Atterberg limits of baseball infield soils containing over-size particles, Part II: Effects of sand angularity and uniformity
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Degradation of conventional, biodegradable and oxo-degradable microplastics in a soil using a δ13C techniqueSoil Research 61 (8)
Revised emission factors for estimating direct nitrous oxide emissions from nitrogen inputs in Australia’s agricultural production systems: a meta-analysisSoil Research 62 (1)
Estimating the attainable soil organic carbon deficit in the soil fine fraction to inform feasible storage targets and de-risk carbon farming decisionsSoil Research 62 (2)
Soil Research 62 (1)
Fertilisation with P, N and S requires additional Zn for healthy plantation tree growth on low fertility savanna soilsSoil Research 62 (1)
The effect of grazing management and legumes on soil organic carbon stocks in pastoral systems relevant to the Australian Carbon Credit Unit Scheme: a critical reviewSoil Research 62 (2)
Soil Research 62 (1)
The spatial and temporal variability and influence factor analysis of soil erosion in a grass farming area: a case study in central ChinaSoil Research 62 (1)
Ammonia volatilisation losses from urea applied to acidic cropping soils is regulated by pH buffering capacitySoil Research 61 (7)
Comparison of soil analytical methods for estimating plant-available potassium in highly weathered soilsSoil Research 61 (7)
WEPP interrill erodibility for clay soils in the crop lands of Northern NSW and Southern Queensland, AustraliaSoil Research 62 (1)
Understanding and quantifying whole soil-profile organic carbon transfer using an environmental tracerSoil Research 61 (8)
Salt dynamics, leaching requirements, and leaching fractions during irrigation of a halophyte with different saline watersSoil Research 62 (1)
Soil Research 61 (8)
Estimating surrogates, utility graphs and indicator sets for soil capacity and security assessments using legacy dataSoil Research 62 (2)
Soil Research 61 (6)
Soil Research 61 (7)
Soil Research 62 (2)
In situ carbon and nitrogen turnover dynamics in topsoils: a climate warming simulation study in an alpine ecosystemSoil Research 61 (8)
Biosolids amendment effects on nitrogen cycling gene expression by the soil prokaryotic community as revealed by metatranscriptomic analysisSoil Research 62 (1)