Vojtěch Lukas
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View article: Correlation of yield and vegetation indices from unmanned aerial vehicle multispectral imagery in Thailand rice production systems
Correlation of yield and vegetation indices from unmanned aerial vehicle multispectral imagery in Thailand rice production systems Open
Unmanned aerial vehicles (UAVs) equipped with cameras are used for collecting vegetation indices (VIs) for health monitoring of field crops such as rice ( Oryza sativa ). This study evaluated the relationship of VIs derived from multispect…
View article: From a regional to field scale - transfer learning for Earth observation based crop yield forecasts
From a regional to field scale - transfer learning for Earth observation based crop yield forecasts Open
Climate change is threatening food security, necessitating optimized resource management to ensure food availability. Field-scale crop yield forecasts, using machine learning and Earth observation data, have great potential for adaptive fa…
View article: Light Assisted Phytoextraction of Landfill Leachate: An Effective Tool to Attenuate Pollutants in Landfill Leachate
Light Assisted Phytoextraction of Landfill Leachate: An Effective Tool to Attenuate Pollutants in Landfill Leachate Open
In the presented experiment, we tested the influence of irrigation with different proportions of leachate collected from the leachate sump of municipal solid waste landfill in combination with LED light on the capacity of model plant to re…
View article: Monitoring Drought Tolerance Mechanisms of Sorghum and Maize Under Unevenly Distributed Precipitation
Monitoring Drought Tolerance Mechanisms of Sorghum and Maize Under Unevenly Distributed Precipitation Open
The study examines the morpho-physiological differences in leaf characteristics between two species of C4 plants: sorghum and maize. The research was conducted in field conditions where plants were rainfed. Both species different varieties…
View article: Assessment of the effect of optimised field plot size on the crop yield
Assessment of the effect of optimised field plot size on the crop yield Open
The presented research deals with the effect of plot size changes on the crop yield. Three plots were chosen in a company engaged in conventional agriculture, on which yields were monitored from 2019 using yield maps. In 2020, the plots (i…
View article: Determining Factors Affecting the Soil Water Content and Yield of Selected Crops in a Field Experiment with a Rainout Shelter and a Control Plot in the Czech Republic
Determining Factors Affecting the Soil Water Content and Yield of Selected Crops in a Field Experiment with a Rainout Shelter and a Control Plot in the Czech Republic Open
To investigate the different responses of crops to drought stress under field conditions of Central European Climate for selected crop rotations, a field experiment was conducted at a test site in the Czech Republic from 2014 to 2021. Depe…
View article: Estimating Drought-Induced Crop Yield Losses at the Cadastral Area Level in the Czech Republic
Estimating Drought-Induced Crop Yield Losses at the Cadastral Area Level in the Czech Republic Open
In the Czech Republic, soil moisture content during the growing season has been decreasing over the past six decades, and drought events have become significantly more frequent. In 2003, 2015, 2018 and 2019, drought affected almost the ent…
View article: Potential for the Accumulation of PTEs in the Biomass of Melilotus albus Med. Used for Biomethane Production
Potential for the Accumulation of PTEs in the Biomass of Melilotus albus Med. Used for Biomethane Production Open
In this paper, a possible use of white sweet clover (Melilotus albus Med.) for phytoremediation was assessed. The plants were grown on soils with naturally occurring concentrations of potentially toxic elements (PTEs). First, the content o…
View article: Effect of Drought on the Development of Deschampsia caespitosa (L.) and Selected Soil Parameters during a Three-Year Lysimetric Experiment
Effect of Drought on the Development of Deschampsia caespitosa (L.) and Selected Soil Parameters during a Three-Year Lysimetric Experiment Open
This work presents results from a field experiment which was focused on the impact of the drought period on microbial activities in rhizosphere and non-rhizosphere soil. To demonstrate the effect of drought, the pot experiment lasted from …
View article: The Effect of Controlled Tile Drainage on Growth and Grain Yield of Spring Barley as Detected by UAV Images, Yield Map and Soil Moisture Content
The Effect of Controlled Tile Drainage on Growth and Grain Yield of Spring Barley as Detected by UAV Images, Yield Map and Soil Moisture Content Open
Controlled tile drainage (CTD) practices are a promising tool for improving water balance, water quality and increasing crop yield by raising shallow groundwater level and capillary rise due to drainage flow retardation. We tested the effe…
View article: Using UAV to Identify the Optimal Vegetation Index for Yield Prediction of Oil Seed Rape (Brassica napus L.) at the Flowering Stage
Using UAV to Identify the Optimal Vegetation Index for Yield Prediction of Oil Seed Rape (Brassica napus L.) at the Flowering Stage Open
Suitability of the vegetation indices of normalized difference vegetation index (NDVI), blue normalized difference vegetation index (BNDVI), and normalized difference yellowness index (NDYI) obtained by means of UAV at the flowering stage …
View article: Soil sampling for variable-rate fertilization using spatial clustering
Soil sampling for variable-rate fertilization using spatial clustering Open
<p>Clustering is still an active method of soil sampling. The defined clusters not only can direct soil sampling for digital soil mapping, but also can serve as management zones for variable application of inputs based on soil sample…
View article: Comparison of Proximal and Remote Sensing for the Diagnosis of Crop Status in Site-Specific Crop Management
Comparison of Proximal and Remote Sensing for the Diagnosis of Crop Status in Site-Specific Crop Management Open
The presented paper deals with the issue of selecting a suitable system for monitoring the winter wheat crop in order to determine its condition as a basis for variable applications of nitrogen fertilizers. In a four-year (2017–2020) field…
View article: Improving Nitrogen Status Estimation in Malting Barley Based on Hyperspectral Reflectance and Artificial Neural Networks
Improving Nitrogen Status Estimation in Malting Barley Based on Hyperspectral Reflectance and Artificial Neural Networks Open
Malting barley requires sensitive methods for N status estimation during the vegetation period, as inadequate N nutrition can significantly limit yield formation, while overfertilization often leads to an increase in grain protein content …
View article: Towards the Development and Verification of a 3D-Based Advanced Optimized Farm Machinery Trajectory Algorithm
Towards the Development and Verification of a 3D-Based Advanced Optimized Farm Machinery Trajectory Algorithm Open
Efforts related to minimizing the environmental burden caused by agricultural activities and increasing economic efficiency are key contemporary drivers in the precision agriculture domain. Controlled Traffic Farming (CTF) techniques are b…
View article: Towards the Development and Verification of a 3D-Based Advanced Optimized Farm Machinery Trajectory Algorithm
Towards the Development and Verification of a 3D-Based Advanced Optimized Farm Machinery Trajectory Algorithm Open
Efforts related to minimizing the environmental burden caused by agricultural activities and increasing economic efficiency are key contemporary drivers in the precision agriculture domain. Controlled Traffic Farming (CTF) techniques are b…
View article: Comparisons of Uniform and Variable Rate Nitrogen Fertilizer Applications in Real Conditions - Evaluation of Potential Impact on the Yield of Wheat Available for Use in Animal Feed
Comparisons of Uniform and Variable Rate Nitrogen Fertilizer Applications in Real Conditions - Evaluation of Potential Impact on the Yield of Wheat Available for Use in Animal Feed Open
The presented research deals with the variable application of N fertilizers (VRA NF) in the stand of winter wheat and with possibilities for evaluating the effect of such application on grain yield. The effect of VRA NF was assessed in clo…
View article: Delineation of Management Zones Using Satellite Imageries
Delineation of Management Zones Using Satellite Imageries Open
The chapter describes the development of a platform for mapping crop status and long-time trends by using EO data as a support tool for fertilizing and crop protection. The main focus of the pilot is to monitor cereal fields by high-resolu…
View article: The 13C Discrimination of Crops Identifies Soil Spatial Variability Related to Water Shortage Vulnerability
The 13C Discrimination of Crops Identifies Soil Spatial Variability Related to Water Shortage Vulnerability Open
Spatial variability of crop growth and yields is the result of many interacting factors. The contribution of the factors to variable yields is often difficult to separate. This work studied the relationships between the 13C discrimination …
View article: Prediction of Yield Productivity Zones from Landsat 8 and Sentinel-2A/B and Their Evaluation Using Farm Machinery Measurements
Prediction of Yield Productivity Zones from Landsat 8 and Sentinel-2A/B and Their Evaluation Using Farm Machinery Measurements Open
Yield is one of the primary concerns for any farmer since it is a key to economic prosperity. Yield productivity zones—that is to say, areas with the same yield level within fields over the long-term—are a form of derived (predicted) data …
View article: Prediction of Yield Productivity Zones from Landsat 8 and Sentinel-2A/B and Their Evaluation Using Farm Machinery Measurements
Prediction of Yield Productivity Zones from Landsat 8 and Sentinel-2A/B and Their Evaluation Using Farm Machinery Measurements Open
Yield is one of the primary concerns for any farmer since it is a key to economic prosperity. Yield productivity zones—that is to say, areas with the same yield level within fields over the long-term—are a form of derived (predicted) data …
View article: Chemical Composition and Hazardous Effects of Leachate from the Active Municipal Solid Waste Landfill Surrounded by Farmlands
Chemical Composition and Hazardous Effects of Leachate from the Active Municipal Solid Waste Landfill Surrounded by Farmlands Open
Landfill leachates are potentially harmful to the environment and to human health. The objective of this study was to characterize leachates in order to analyze whether a relationship exists between the stored waste and the composition of …
View article: Deployment and Verifications of the Spatial Filtering of Data Measured by Field Harvesters and Methods of Their Interpolation: Czech Cereal Fields between 2014 and 2018
Deployment and Verifications of the Spatial Filtering of Data Measured by Field Harvesters and Methods of Their Interpolation: Czech Cereal Fields between 2014 and 2018 Open
Yield mapping is a subject of research in (precision) agriculture and one of the primary concerns for farmers as it forms the basis of their income and has implications for subsidies and taxes. The presented approach involves deployment of…