Andrew S. Gregory
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View article: Influence of Enriched Cassava Peel Biochar on Growth, Yield and Proximate Composition of Sweet Potato
Influence of Enriched Cassava Peel Biochar on Growth, Yield and Proximate Composition of Sweet Potato Open
Sweet potato is one of the most important roots and tuber crop in terms of food security and its nutritional values. Over the years, the growth and yield of sweet potato is constrained by poor soil fertility and most farmers have adopted t…
View article: Fitting and comparing water retention curves for soils under contrasting experimental treatment: Examples from conservation agriculture trials in southern Africa
Fitting and comparing water retention curves for soils under contrasting experimental treatment: Examples from conservation agriculture trials in southern Africa Open
Conservation Agriculture (CA) is proposed as a ‘climate-smart’ intervention for resilient crop production in dryland areas affected by climate change. Evidence is needed for how these practices affect fundamental properties of the soil. Th…
View article: How Tillage System Affects the Soil Carbon Dioxide Emission and Wheat Plants Physiological State
How Tillage System Affects the Soil Carbon Dioxide Emission and Wheat Plants Physiological State Open
The cultivation or ‘tillage’ system is one of the most important elements of agrotechnology. It affects the condition of the soil, significantly modifying its physical, chemical, and biological properties, and the condition of plants, star…
View article: Soil nitrogen and phosphorus regulate decomposition of organic nitrogen compounds in the rothamsted experiment
Soil nitrogen and phosphorus regulate decomposition of organic nitrogen compounds in the rothamsted experiment Open
The effects of long-term N and P fertilisation on soil organic nitrogen (SON) turnover are unclear. We sampled soils fertilised by N and/or P since 1843 at Rothamsted Research to investigate the effects of long-term N and P fertilisation o…
View article: Why do we make changes to the long-term experiments at Rothamsted?
Why do we make changes to the long-term experiments at Rothamsted? Open
The long-term field experiments at Rothamsted in south-east England (UK) are an important resource that has been used extensively to study the effects of land management, atmospheric pollution and climate change on soil fertility and the s…
View article: Agricultural fertilisers contribute substantially to microplastic concentrations in UK soils
Agricultural fertilisers contribute substantially to microplastic concentrations in UK soils Open
Since their invention, plastics have driven a revolution in behavior in all aspects of our lives, including agriculture. In-use and as a waste material, plastics degrade and accumulate in agricultural systems. Accumulation of plastic pollu…
View article: Electrical Resistivity Tomography to Measure and Monitor Hydrodynamic Heterogeneities in a Malawian Agricultural Alfisol
Electrical Resistivity Tomography to Measure and Monitor Hydrodynamic Heterogeneities in a Malawian Agricultural Alfisol Open
Conservation Agriculture (CA) is an agricultural method that has been shown to provide crop resilience to drought. In order to better understand the hydrodynamics in soils cultivated using CA, we installed geophysical monitoring equipment …
View article: AgriMPs_SJC_DataFile.xlsx
AgriMPs_SJC_DataFile.xlsx Open
The data file supports the manuscript entitled 'Agricultural fertilisers contribute substantially to microplastic concentrations in UK soils'.Data from microplastic analysis of agricultural soils from the Broadbalk winter wheat experiment …
View article: An overlooked mechanism underlying the attenuated temperature response of soil heterotrophic respiration
An overlooked mechanism underlying the attenuated temperature response of soil heterotrophic respiration Open
Biogeochemical reactions occurring in soil pore space underpin gaseous emissions measured at macroscopic scales but are difficult to quantify due to their complexity and heterogeneity. We develop a volumetric-average method to calculate ae…
View article: Long-term Fertilization Enhances Soil Carbon Stability by Increase the Ratio of Passive Carbon: Evidence From Four Typical Croplands
Long-term Fertilization Enhances Soil Carbon Stability by Increase the Ratio of Passive Carbon: Evidence From Four Typical Croplands Open
Aims Soil organic carbon (SOC) plays an important role in improving soil quality, however how long-term fertilization influences SOC and contrasting active carbon (AC) and passive C (PC) pools at large scale remains unclear. The aim of thi…
View article: Soil organic carbon, extracellular polymeric substances (EPS), and soil structural stability as affected by previous and current land-use
Soil organic carbon, extracellular polymeric substances (EPS), and soil structural stability as affected by previous and current land-use Open
While soil microbial ecology, soil organic carbon (SOC) and soil physical quality are widely understood to be interrelated - the underlying drivers of emergent properties, from land management to biochemistry, are hotly debated. Biological…
View article: Editorial for soil organic matter 2019 special issue
Editorial for soil organic matter 2019 special issue Open
Soil organic matter (SOM) is a unique component of the soil that, because of its heterogeneity, directly or indirectly affects its physical, chemical and biological properties, and the functions that depend on the interaction of those prop…
View article: Species and Genotype Effects of Bioenergy Crops on Root Production, Carbon and Nitrogen in Temperate Agricultural Soil
Species and Genotype Effects of Bioenergy Crops on Root Production, Carbon and Nitrogen in Temperate Agricultural Soil Open
Bioenergy crops have a secondary benefit if they increase soil organic C (SOC) stocks through capture and allocation below-ground. The effects of four genotypes of short-rotation coppice willow (Salix spp., 'Terra Nova' and 'Tora') and Mis…
View article: Effect of soil saturation on denitrification in a grassland soil
Effect of soil saturation on denitrification in a grassland soil Open
Nitrous oxide (N2O) is of major importance as a greenhouse gas and precursor of ozone (O3) destruction in the stratosphere mostly produced in soils. The soil-emitted N2O is generally predominantly derived from denitrification and, to a sma…
View article: Effect of soil saturation on denitrification in a grassland soil
Effect of soil saturation on denitrification in a grassland soil Open
Nitrous oxide (N2O) is of major importance as a greenhouse gas and precursor of ozone (O3) destruction in the stratosphere mostly produced in soils. The soil emitted N2O is predominantly derived from denitrification and to a smaller extent…
View article: Parametric Estimation of Water Retention Using Mgmdh Method and Principal Component Analysis
Parametric Estimation of Water Retention Using Mgmdh Method and Principal Component Analysis Open
Performing a primary analysis, such as principal component analysis (PCA) may increase accuracy and reliability of developed pedotransfer functions (PTFs). This study focuses on the usefulness of the soil penetration resistance (PR) and pr…
View article: CrowdFundRES: A New Opportunity for Financing Renewable Energy Projects
CrowdFundRES: A New Opportunity for Financing Renewable Energy Projects Open
We are currently seeing a deceleration of renewable energy growth in Europe. This is partly attributed to the challenges for financing renewable energy projects. Reduced access to conventional financing options over the past few years has …
View article: Long‐term management changes topsoil and subsoil organic carbon and nitrogen dynamics in a temperate agricultural system
Long‐term management changes topsoil and subsoil organic carbon and nitrogen dynamics in a temperate agricultural system Open
Summary Soil organic carbon (SOC) and nitrogen (N) contents are controlled partly by plant inputs that can be manipulated in agricultural systems. Although SOC and N pools occur mainly in the topsoil (upper 0.30 m), there are often substan…
View article: A review of the impacts of degradation threats on soil properties in the <scp>UK</scp>
A review of the impacts of degradation threats on soil properties in the <span>UK</span> Open
National governments are becoming increasingly aware of the importance of their soil resources and are shaping strategies accordingly. Implicit in any such strategy is that degradation threats and their potential effect on important soil p…
View article: High yielding biomass genotypes of willow (Salix spp.) show differences in below ground biomass allocation
High yielding biomass genotypes of willow (Salix spp.) show differences in below ground biomass allocation Open
Willows (Salix spp.) grown as short rotation coppice (SRC) are viewed as a sustainable source of biomass with a positive greenhouse gas (GHG) balance due to their potential to fix and accumulate carbon (C) below ground. However, exploiting…
View article: Carbon Sequestration by Perennial Energy Crops: Is the Jury Still Out?
Carbon Sequestration by Perennial Energy Crops: Is the Jury Still Out? Open
Soil organic carbon (SOC) changes associated with land conversion to energy crops are central to the debate on bioenergy and their potential carbon neutrality. Here, the experimental evidence on SOC under perennial energy crops (PECs) is s…