Results 11 to 20 of about 75,226 (162)
Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2020 The leaf area index (LAI) is one of the most common leaf area and canopy structure quantifiers. Direct LAI measurement and determination of canopy characteristics in larger areas is unrealistic due to the large number of measurements required to create ...
Zdeněk Patočka +5 more
doaj +1 more source
The evaluation of leaf area by the grapewine
Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2009 The contribution deals with leaf area assesment of 9 grapevine varieties. The measurements were carried out by means of Leaf Area Metr CI-202 (scanner type).
Patrik Burg, Pavel Zemánek
doaj +1 more source
Leaf area index of potato crop under three nitrogen fertilization treatments
Agronomía Colombiana, 2017 Nitrogen fertilization has considerable effects on growth and yield of the potato crop. Additionally, leaf expansion is one of the most important growth parameters that can be used to optimize the management of agroecological resources.
Pedro Manuel Villa
doaj +1 more source
Mapping Leaf Area Index With a Smartphone and Gaussian Processes [PDF]
IEEE Geoscience and Remote Sensing Letters, 2015 Leaf area index (LAI) is a key biophysical parameter used to determine foliage cover and crop growth in environmental studies. Smartphones are nowadays ubiquitous sensor devices with high computational power, moderate cost, and high-quality sensors. A smartphone app, called PocketLAI, was recently presented and tested for acquiring ground LAI estimates.
Manuel Campos-Taberner +6 more
openaire +2 more sources
LEAF AREA INDEX RETRIEVED FROM THERMAL HYPERSPECTRAL DATA [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016 Leaf area index (LAI) is an important essential biodiversity variable due to its role in many terrestrial ecosystem processes such as evapotranspiration, energy balance, and gas exchanges as well as plant growth potential. A novel approach presented here
E. Neinavaz +3 more
doaj +1 more source
Downscaling of MODIS leaf area index using landsat vegetation index [PDF]
Geocarto International, 2020 Several organizations provide satellite Leaf Area Index (LAI) data regularly, at various scales, at high frequency, but at low spatial resolution.
Georgios Ovakoglou +3 more
openaire +2 more sources
Influence of canopy development in the vineyard on spray deposition from a tunnel sprayer
Journal of Agricultural Engineering, 2018 Spray deposition from a tunnel, air-assisted sprayer was analysed during the whole season, following canopy development in a vertical-shoot-positioned vineyard.
Gianfranco Pergher, Nicola Zucchiatti
doaj +1 more source
Leaf area Index measurements for Pinus brutia Ten. Plantations in Northern Iraqi [PDF]
Mesopotamia Journal of AgricultureThe surface area of the leaves of trees that perform photosynthesis is expressed by the leaf area index (LAI) for pine trees with different densities, using direct methods by collecting field data in 2022 from (30) samples, and measurements were taken of
Maan Shekho +2 more
doaj +1 more source
Leaf area index retrieval with ICESat-2 photon counting LiDAR
International Journal of Applied Earth Observations and Geoinformation, 2021 This is the first study to inverse leaf area index (LAI) with photon counting LiDAR (i.e., Ice, Cloud, and Land Elevation Satellite-2/Advanced Topographic Laser Altimeter System, ICESat-2/ATLAS). A new framework composed of three major steps was applied:
Jie Zhang +8 more
doaj +1 more source
Sensors, 2018 In this analysis, a method for construction of forest canopy three-dimensional (3D) models from terrestrial LiDAR was used for assessing the influence of structural changes on reflectance for an even-aged forest in Belgium.
Renato Cifuentes +4 more
doaj +1 more source