Results 71 to 80 of about 9,141 (253)

A comparison of optical and direct methods for monitoring the seasonal dynamics of leaf area index in deciduous forests

Silva Fennica, 2001
During the 1996 growing season the seasonal dynamics of the Leaf Area Index (LAI) were determined by 3 different methods in two forest types: a mixed oak (Quercus robur L.) – beech (Fagus sylvatica L.) stand and an ash dominated (Fraxinus excelsior L.)
Mussche, Sylvie, Samson, Roeland, Nachtergale, Lieven, De Schrijver, An, Lemeur, Raoul, Lust, Noël   +5 more
doaj   +1 more source

Microbiome‐mediated plant‐soil feedbacks as a tool for resilient agriculture

iMetaOmics, EarlyView.
Translating plant‐soil feedbacks (PSFs) into reliable agricultural management requires shifting from input‐dependent practices toward endogenous, process‐driven crop resilience. To bridge this gap, we propose a predictive framework centered on three strategic interventions: engineering the crop holobiont, diversifying the soil habitat, and deploying ...
Muhammad Asif, Hazrat Bilal, Min Xiao, Lei Dong, Wen‐Jun Li   +4 more
wiley   +1 more source

Multi-Crop Green LAI Estimation with a New Simple Sentinel-2 LAI Index (SeLI)

Sensors, 2019
The spatial quantification of green leaf area index (LAIgreen), the total green photosynthetically active leaf area per ground area, is a crucial biophysical variable for agroecosystem monitoring.
Nieves Pasqualotto, Jesús Delegido, Shari Van Wittenberghe, Michele Rinaldi, José Moreno   +4 more
doaj   +1 more source

Towards Water, Food and Energy Security: The Global Challenges and Possible Solutions for a Holistic Vision of Sustainability

Irrigation and Drainage, EarlyView.
ABSTRACT This invited paper gives an overview of the challenges the world is facing and offers a possible solution for water and food security within the holistic integrated concept of the water–energy–food (WEF) nexus. The paper summarizes the experience the author gained through working on various research projects at national and international ...
Ragab Ragab
wiley   +1 more source

Ground-based estimation of leaf area index and vertical distribution of leaf area density in a Betula ermanii forest

Silva Fennica, 2009
We developed a ground-based method for estimating leaf area index (LAI) and vertical distribution of leaf area density (LAD) for two Betula ermanii plots, combining an allometric method for tree leaf area with the MacArthur–Horn (MH) method using a ...
Sumida, Akihiro, Nakai, Taro, Yamada, Masahito, Ono, Kiyomi, Uemura, Shigeru, Hara, Toshihiko   +5 more
doaj   +1 more source

Smart Sensor‐Integrated Lysimeter System for Affordable on‐Farm Crop Water Monitoring and Irrigation Management

Irrigation and Drainage, EarlyView.
ABSTRACT Accurate monitoring of crop water use is critical for precision irrigation, yet conventional lysimeter systems remain too costly and complex for widespread adoption. This study presents the development and field validation of a low‐cost, information and communication technology (ICT)‐enabled weighing lysimeter system that integrates load cells,
Stephen Okwang, Younggu Her, Taeil Jang
wiley   +1 more source

Evapotranspiration Estimation and Irrigation Performance Assessment Using Remote Sensing: A Case Study of the Ergani Dam Irrigation System (Turkey)

Irrigation and Drainage, EarlyView.
ABSTRACT Efficient water resource management is critical for sustainable agriculture, with evapotranspiration (ET) serving as a key parameter. Remote sensing (RS) techniques offer cost‐effective approaches for ET estimation and irrigation performance assessment in extensive agricultural systems.
Kivanç Hayri Doganay, Bekir Sitki Karatas   +1 more
wiley   +1 more source

VitiCanopy: A Free Computer App to Estimate Canopy Vigor and Porosity for Grapevine

Sensors, 2016
Leaf area index (LAI) and plant area index (PAI) are common and important biophysical parameters used to estimate agronomical variables such as canopy growth, light interception and water requirements of plants and trees.
Roberta De Bei, Sigfredo Fuentes, Matthew Gilliham, Steve Tyerman, Everard Edwards, Nicolò Bianchini, Jason Smith, Cassandra Collins   +7 more
doaj   +1 more source

Soil Silicon Application Alleviates Drought Stress in Sugar Beet (Beta vulgaris L.)

Journal of Plant Nutrition and Soil Science, EarlyView.
ABSTRACT Background: The increasing frequency and intensity of drought events have led to yield and quality losses in sugar beet production in temperate regions in Central Europe. Under arid conditions, silicon (Si) application reduced beet yield losses under drought. Similar data for temperate climates are missing.
Tabea Selzer, Gereon Heller, Dietmar Horn, Thomas Hetterich, Jan Kessler, Jakob Santner   +5 more
wiley   +1 more source

Measuring leaf area index from colour digital image of wheat crop

Journal of Agrometeorology, 2016
Leaf area index (LAI) is an important physiological trait that determines solar radiation interception and thus biomass. In this study leaf area index (LAI) was estimated from vertical gap fraction derived from top-of-canopy digital colour photography ...
BAPPA DAS, R.N. SAHOO, SOURABH PARGAL, GOPAL KRISHNA, V.K. GUPTA, R. VERMA, C. VISWANATHAN   +6 more
doaj   +1 more source