Naslov
Can We Improve Agricultural (Environmental) Management By Using Novel Numerical Modeling Approaches?

Autori
Filipovic, Vilim ; Gerke, H., Horst ; Robinson, A., David ; Šimunek, Jirka ; Bristow, L., Keith ; Clothier, E., Brent ;

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Embracing the digital Environment / Wendroth, Ole ; - San Antonio (TX) : ASA-CSSA-SSSA, 2019

Skup
"Embracing the Digital Environment” 2019 ASA-CSSA-SSSA International Annual Meeting

Mjesto i datum
San Antonio (TX), Sjedinjene Američke Države, 10.11.2019. - 13.11.2019

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Nije recenziran

Ključne riječi
vadose zone, transport processes, agroecosystems, numerical modeling

Sažetak
Plant agricultural production primarily takes place in soil critical (vadose) zone which represents one of the most complex terrestrial systems due to a wide range of processes occurring within its boundaries. As the human population is exponentially rising, large pressure is projected on soil and water resources, as well as on food production in agroecosystems. Numerical modeling can be used as a predicting tool for estimation of various agricultural management systems (e.g., water management, tillage) leading towards more environmentally sustainable production. Simulations can be exploited in designing irrigation or drainage systems, estimating the benefits of various compost addition or implementing biodegradable mulch and assessing its effects on agrochemicals fate (nutrients, trace elements or pesticides). The approach of combining numerical simulations with laboratory analytics and field observations has been proven to be very efficient. In homogeneous soil, vadose zone modeling is commonly based on Richards equation for describing water flow, and advection-dispersion equations for solute transport ; which usually works quite well in describing physical processes. However, there is still difficulty in estimation and modelling of preferential flow and nonuniform solute transport in structured soils found in agroecosystems. The issue of non-linearity in vadose zone is mainly connected to heterogeneity in soil properties (chemical, physical, biological) which is difficult to incorporate into numerical models. Challenges like upscaling issues, model complexity and soil biotic processes/non-linearity quantification still remains, and improvements in modeling tools are a step toward the solution.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

POVEZANOST RADA