Preprints

Filtering by Subject: Agronomy and Crop Sciences Life Sciences

Field’s Spatial Variation Influenced Outcomes more so than N-fertiliser, FYM, Cover Crops or Their Legacy Effects Following Conversion to a No-till Arable System

Ana I.M. Natalio, Andrew Richards

Published: 2022-08-05
Subjects: Agricultural Science, Agriculture, Agronomy and Crop Sciences Life Sciences, Environmental Indicators and Impact Assessment, Soil Science, Sustainability

No-till in agricultural arable systems is a practice that offers benefits to soil health. Combined with methods such as the incorporation of crop residues and manures, no-till can influence the dynamics of soil organic carbon (SOC) and organic matter (SOM), crop productivity and nutrient status. These turnovers are shaped by spatial and temporal factors and associated microbial mineralisation [...]

Fencing farm dams to exclude livestock halves methane emissions and improves water quality.

Martino Edoardo Malerba, David B. Lindenmayer, Benjamin Scheele, et al.

Published: 2022-03-31
Subjects: Agricultural Science, Agriculture, Agronomy and Crop Sciences Life Sciences, Biochemistry, Biophysics, and Structural Biology, Earth Sciences, Environmental Sciences

Agricultural practices have created tens of millions of small artificial water bodies (“farm dams” or “agricultural ponds”) to provide water for domestic livestock worldwide. Among freshwater ecosystems, farm dams have some of the highest greenhouse gas (GHG) emissions per m2 due to fertilizer and manure run-off boosting methane production – an extremely potent GHG. However, management strategies [...]

Probabilistic soil moisture dynamics of water- and energy-limited ecosystems

Estefanía Muñoz, Andrés Ochoa, Germán Poveda, et al.

Published: 2020-05-18
Subjects: Agriculture, Agronomy and Crop Sciences Life Sciences, Civil and Environmental Engineering, Earth Sciences, Engineering, Environmental Engineering, Environmental Sciences, Forest Sciences, Hydrology, Life Sciences, Physical Sciences and Mathematics, Plant Sciences, Statistical Models, Statistics and Probability

This paper presents an extension of the stochastic ecohydrological model for soil moisture dynamics at a point of Rodriguez-Iturbe et al. (1999) and Laio et al. (2001). In the original model, evapotranspiration is a function of soil moisture and vegetation parameters, so that the model is suitable for water-limited environments. Our extension introduces a dependence on maximum evapotranspiration [...]

Lower air pollution during COVID-19 lock-down: improving models and methods estimating ozone impacts on crops (accepted 01.07.2020)

Frank Dentener, Lisa Emberson, stefano galmarini, et al.

Published: 2020-05-08
Subjects: Agriculture, Agronomy and Crop Sciences Life Sciences, Environmental Sciences, Life Sciences, Physical Sciences and Mathematics, Plant Sciences

We suggest that the unprecedented and unintended decrease of emissions of air pollutants during the COVID-19 lockdown in 2020 could lead to declining seasonal ozone concentrations, and positive impacts on crop yields. An initial assessment of the potential effects of COVID-19 emission reductions was made using a set of six scenarios that variously assumed annual European and global emission [...]

To be or not to be: Prospects for rice self-sufficiency in China

Nanyan Deng, Patricio Grassini, Haishun Yang, et al.

Published: 2018-08-30
Subjects: Agronomy and Crop Sciences Life Sciences, Life Sciences, Plant Sciences

China produces 28% of global rice supply and is currently self-sufficient despite a massive rural to urban demographic transition that drives intense competition for land and water resources. At issue is whether to remain self-sufficient, which depends on the potential to raise yields on existing rice land. Here we report the first high-resolution spatial analysis of rice production potential in [...]

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