Results 31 to 40 of about 98,513 (306)

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 Agriculture
The 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, Mohammed Al-Allaf, Muzahim Younis   +2 more
doaj   +1 more source

Sentinel Image to Estimate Industrial Tomato Leaf Area Index

Brazilian Archives of Biology and Technology, 2023
The Leaf Area Index (LAI) is one of the main physiological parameters of the plant related to transpiration, productivity and rainfall interception. Among the methods to determine the LAI, the use of remote sensing that estimates the LAI through image ...
Mylena Marques Dorneles, Gustavo Henrique Mendes Brito, Ivandro José de Freitas Rocha, Sueli Martins de Freitas Alves   +3 more
doaj   +1 more source

Leaf area index estimation using top-of-canopy airborne RGB images

International Journal of Applied Earth Observations and Geoinformation, 2021
Leaf Area Index (LAI) is one of the most important biophysical properties of a crop, used in detecting long-term water stress, estimating biomass, and identifying crop growth stage.
Rahul Raj, Jeffrey P. Walker, Rohit Pingale, Rohit Nandan, Balaji Naik, Adinarayana Jagarlapudi   +5 more
doaj   +1 more source

A Simulation Study Using Terrestrial LiDAR Point Cloud Data to Quantify Spectral Variability of a Broad-Leaved Forest Canopy

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, Dimitry Van der Zande, Christian Salas-Eljatib, Jamshid Farifteh, Pol Coppin   +4 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, Jinyan Tian, Xiaojuan Li, Le Wang, Beibei Chen, Huili Gong, Rongguang Ni, Bingfeng Zhou, Cankun Yang   +8 more
doaj   +1 more source

Metsa lehepinnaindeksi kaardistamine lennukilidari, satelliidipiltide ja maapealsete mõõtmiste abil Järvselja VALERI testalal / Leaf area index mapping with airborne lidar, satellite images and ground measurements in Järvselja VALERI test site

Metsanduslikud Uurimused, 2011
The aim of this study was to compile the leaf area index (LAI) map of a 3×3 km VALERI test site in Järvselja, Estonia. Canopy transmittance measurements of LAI by LAI-2000 Plant Canopy Analyzers and digital cameras supplied with fisheye converters were ...
Kodar Ave, Lang Mait, Arumäe Tauri, Eenmäe Alo, Pisek Jan, Nilson Tiit   +5 more
doaj   +1 more source

Retrieving leaf area index from SPOT4 satellite data

Egyptian Journal of Remote Sensing and Space Sciences, 2010
A research project was conducted as collaboration between the National Authority for Remote Sensing and Space Sciences (NARSS) in Egypt and the Institute of Remote Sensing Applications (IRSA), Chinese Academy of Sciences.
M. Aboelghar, S. Arafat, A. Saleh, S. Naeem, M. Shirbeny, A. Belal   +5 more
doaj   +1 more source

Design and evaluation of multispectral LiDAR for the recovery of arboreal parameters [PDF]

, 2014
Multispectral light detection and ranging (LiDAR) has the potential to recover structural and physiological data from arboreal samples and, by extension, from forest canopies when deployed on aerial or space platforms.
Nichol, Caroline, Martinez-Ramirez, Daniel, Ximing, Ren, Wallace, A.M., Woodhouse, Iain, Wallace, Andrew Michael, Nichol, Caroline J, McCarthy, Aongus, Buller, Gerald, Morak, Simone, Woodhouse, Iain H, Ren, Ximing, Buller, Gerald Stuart   +12 more
core   +1 more source

Genetic variability studies in amaranthus (Amaranthus spp.)

Journal of Horticultural Sciences, 2021
An investigation was carried out to estimate the nature and extent of genetic variability​ ​among twenty Amaranthus genotypes (Amaranthus spp.) under a randomized block design during the year 2019-20.
Annapoorna Agadi, S Kolakar, D Lakshmana, S Nadukeri, M Hanumanthappa   +4 more
doaj   +1 more source