The European Soil Erosion Model (EUROSEM) is a dynamic distributed model, able to simulate sediment transport, erosion and deposition over the land surface by rill interill processes in single storms for both individual fields small catchments. output includes total runoff, soil loss, storm hydrograph graph. Compared with other models, EUROSEM has explicit simulation of flow; plant cover effects on interception rainfall energy; rock fragment (stoniness) infiltration, flow velocity splash...

Daisy is a soil-plant-atmosphere system model focusing on agro-ecosystems. It simulates water, heat, carbon, and nitrogen balances as well crop production pesticide fate in agro-ecosystems subjected to various management strategies. The basic scale of application the field (management unit), which may be simulated one or two dimensions. allows several different process descriptions for water flow, evapotranspiration, growth, solute transport. Furthermore, it can operate distributed mode...

The leaching of soil particles and surface applied 14C-labeled glyphosate pendimethalin from intact columns (height: 50 cm; diameter: 30 cm) were investigated, the relative significance particle-facilitated pesticide transport was quantified. Investigations performed with a recently plowed (four columns) an untilled (five sandy loam soil. Leaching driven by three irrigation events (15 mm h(-1); 2 h each). Samples leachate filtered immediately (within 1.5 minutes) using 20 nm filters,...

This paper presents a modelling approach where the entire land-based hydrological and nitrogen cycle from field to river outlet was included. is based on combination of physically root zone model (DAISY) distributed catchment (MIKE SHE/MIKE11). Large amounts data available statistical databases surface maps were used for determination land use management practises predict leaching within catchment. The included description nitrate transformations in zone, denitrification saturated wetland...

This study examined the number, distribution, and connectivity of biopores (>1 mm) in a sandy loam till with tile drains located at 1.2‐m depth. Two areas (6.5 by 1 m, 10 m apart) were irrigated within 6 to 8 h 50 mm water containing dye Brilliant Blue (2.2 g L −1 ) using field sprayer. Groundwater was initially below drain The distribution stained unstained 15‐ 30‐cm‐wide horizontal terraces 0.5‐m‐long sections along 6.5‐m transect up eight depths (15–175 cm), for total investigated area...

Transport and retention of colloids are important issues when addressing the risk contamination aquatic environment. A field study tracer experiment was performed allowing a quantification solutes along macropores in sandy loam soil with tile drain located at 1.2 m depth. Using sprayer, 6‐m 2 plot irrigated 50 mm water containing mixture 1‐μm fluorescent microspheres (1.34 × 10 melamine‐resin [MS] L −1 ), bromide (0.14 g Br dye Brilliant Blue (2.2 BB ) during 4‐h period. Before irrigation,...

Abstract Nitrogen (N) management in modern farming needs to balance the interests of yield quantity and quality with environmental impact reactive N lost atmosphere aquatic environments. Mechanistic agroecosystem models are useful tools analyse combined effects options natural conditions, including soil fertility climate, site‐specific optimal application rates impact. An important component system description is crop module, responses status stress. To improve growth response DAISY model...

The EU nitrogen expert panel (EUNEP) has proposed nitrogen-based indicators for farm productivity (N output), efficiency (NUE) and environmental emissions surplus). This model-based study (using the Daisy model) was carried out, i) to effects of soil type, organic matter (SOM), cropping pre-histories varying in C input, 3-to-4 manure-to-mineral N proportions ten crop rotations on N-based indicators, ii) evaluate adequacy these by establishing quantitative relationships between surplus, loss...

Artificially drained agricultural land in northwest Europe. The use of application timing as a mitigation tool for pesticide leaching to drains was investigated by simulating fate after every day pesticide-specific window, using the agro-hydrological model DAISY. simulations were carried out six combinations pesticide-crop-seasons three synthetically generated climate series and 800 soil profiles. simulated drain concentrations transformed normalized hypothetical adjacent stream. Each then...

Abstract The management of climate-resilient grassland systems is important for stable livestock fodder production. In the face climate change, maintaining productivity while minimizing yield variance increasingly challenging. To achieve and grasslands, a better understanding climatic drivers long-term trends in its dependence on agronomic inputs required. Based Park Grass Experiment at Rothamsted (UK), we report first time (1965–2018) plots given different fertilizer lime applications, with...

The benefits of drainage with respect to improving yield level and stability was recognized millennia ago, hence is an old agronomical practice. However, agriculture under constant change, few long-term field studies exploring the need for have been conducted in modern north European agricultural systems. objective this study describe variations cereal crops as a function different dynamic conditions that may appear ordinary fields systems, end seven years experiments were at up 3 locations...

Abstract One of the major challenges in agriculture is how climate change influences crop production, for different environmental (soil type, topography, groundwater depth, etc.) and agronomic management conditions. Through systems modelling, this study aims to quantify impact future on yield risk winter wheat two common soil types Eastern Denmark. The agro-ecosystem model DAISY was used simulate arable, conventional cropping (CSs) focused three main factors: sequence, usage catch crops...

Mobility of dissolved organic matter (DOM) strongly affects the export nitrogen (N) and phosphorus (P) from soils to surface waters. To study sorption mobility C P (DOC, DOP) in soil, pH-dependent DOM samples Ap, EB, Bt horizons a Danish agricultural Humic Hapludult was investigated kinetic model applicable field-scale models tested. Sorption experiments 1 72 h duration were conducted at two pH levels (pH 5.0 7.0) six initial DOC concentrations (0-4.7 mmol L(-1)). Most sorption/desorption...