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Data fusion techniques for delineation of site-specific management zones in a field in UK
Springer Science and Business Media LLC - Tập 17 - Trang 200-217 - 2015
S. M. Shaddad, S. Madrau, A. Castrignanò, A. M. Mouazen
Fusion of different data layers, such as data from soil analysis and proximal soil sensing, is essential to improve assessment of spatial variation in soil and yield. On-line visible and near infrared (Vis–NIR) spectroscopy have been proved to provide high resolution information about spatial variability of key soil properties. Multivariate geostatistics tools were successfully implemented for the...... hiện toàn bộ
Spatial interpretation of plant parameters in winter wheat
Springer Science and Business Media LLC - Tập 15 - Trang 447-465 - 2013
F. Rodriguez-Moreno, V. Lukas, L. Neudert, T. Dryšlová
A methodology is described for the spatial interpretation of plant parameters (SIOPP), which was used to diagnose the nutritional status of winter wheat. The data used in this study were collected in 2010 throughout the monitoring of two fields (52 and 38 ha) with uniform and conventional agricultural management, located in the Czech Republic. The survey was carried out at BBCH 30 phenological sta...... hiện toàn bộ
Evaluation of different approaches for estimating and mapping crop water status in cotton with thermal imaging
Springer Science and Business Media LLC - Tập 11 Số 1 - Trang 27-41 - 2010
V. Alchanatis, Yafit Cohen, Shabtai Cohen, Matthias Möller, Michael Sprinstin, M. Meron, J. Tsipris, Yehoshua Saranga, E. Sela
A procedure for estimating the number of green mature apples in night-time orchard images using light distribution and its application to yield estimation
Springer Science and Business Media LLC - Tập 18 - Trang 59-75 - 2016
Raphael Linker
A procedure for estimating the number of mature apples in orchard images captured at night-time with artificial illumination was developed and its potential for estimating yield was investigated. The procedure was tested using four datasets totaling more than 800 images taken with cameras positioned at three heights. The procedure for detecting apples was based on the observation that the light di...... hiện toàn bộ
Multispectral images for monitoring the physiological parameters of coffee plants under different treatments against nematodes
Springer Science and Business Media LLC - Tập 23 - Trang 2312-2344 - 2022
Fernando Vasconcelos Pereira, George Deroco Martins, Bruno Sérgio Vieira, Gleice Aparecida de Assis, Vinicius Silva Werneck Orlando
The coffee crops are exposed to different pathogens that directly affect yield. These include nematodes, which attack the roots of plants and compromise their physiological development. Given the losses caused by this pathogen and the lack of information on spatial distribution in infested areas, it is important to adopt technologies that enable crops under different management systems to be monit...... hiện toàn bộ
Soil mapping for precision agriculture using support vector machines combined with inverse distance weighting
Springer Science and Business Media LLC - Tập 23 Số 4 - Trang 1189-1204 - 2022
Gustavo Willam Pereira, Domingos Sárvio Magalhães Valente, Daniel Marçal de Queiroz, Nerílson Terra Santos, Elpídio Inácio Fernandes Filho
A new multispectral index for canopy nitrogen concentration applicable across growth stages in ryegrass and barley
Springer Science and Business Media LLC - - Trang 1-34 - 2023
Manish Kumar Patel, Dongryeol Ryu, Andrew W. Western, Glenn J. Fitzgerald, Eileen M. Perry, Helen Suter, Iain M. Young
Accurately monitoring Canopy Nitrogen Concentration (CNC) is a prerequisite for precision nitrogen (N) fertiliser management at the farm scale with carbon and N budgeting across the landscape and ecosystems. While many spectral indices have been proposed for CNC monitoring, their applicability and accuracy are often adversely affected by confounding factors such as aboveground biomass (AGB), crop ...... hiện toàn bộ
The application of unmanned aircraft systems to plant protection in China
Springer Science and Business Media LLC - Tập 19 - Trang 278-292 - 2017
Shulin Yang, Xiaobing Yang, Jianyou Mo
Agricultural use of unmanned aircraft systems (UAS) in China has risen recently with the increased demand for precision agriculture. The focus of UAS use in China is on improving the efficiency of crop production and reducing environmental harm from runoff related to current crop management activities. This use will keep increasing with the support of new policies on land transfer and appropriatel...... hiện toàn bộ
Stratified sampling in fruit orchards using cluster-based ancillary information maps: a comparative analysis to improve yield and quality estimates
Springer Science and Business Media LLC - Tập 20 - Trang 179-192 - 2018
Asier Uribeetxebarria, José A. Martínez-Casasnovas, Alexandre Escolà, Joan R. Rosell-Polo, Jaume Arnó
Estimation of yield or other fruit quality parameter is of great interest to farmers to decide on management actions just before harvesting and, in any case, to anticipate and plan harvesting operations. Making accurate and reliable estimates often requires systematic sampling that, when covering the whole plot, can result in the use of a large number of samples and a significant effort in time an...... hiện toàn bộ
Geographically weighted regression estimation of the linear response and plateau function
Springer Science and Business Media LLC - Tập 23 - Trang 377-399 - 2021
Dayton M. Lambert, Whoi Cho
The objective of this paper is to modify the linear geographically weighted regression (GWR) estimator to accommodate the discontinuous join point, or “knot”, of the linear response with plateau (LRP). This is the first application to estimate a LRP site-specific crop response function (SSCRF) model with GWR. The data used in this heuristic application are from a variable rate nitrogen (VRN) trial...... hiện toàn bộ
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