Results 1 to 10 of about 956 (118)

Alterations in serum metabolomics predict drug-resistant epilepsy [PDF]

open access: yesScientific Reports
Drug-resistant epilepsy (DRE) lacks a reliable early warning system. This prospective study developed an early predictive model for DRE based on baseline serum metabolite levels. Serum samples were collected from 151 prospectively recruited patients with
Wenzhong Kang   +9 more
doaj   +2 more sources

Drone and handheld sensors for hemp: Evaluating NDVI and NDRE in relation to nitrogen application and crop yield

open access: yesAgrosystems, Geosciences & Environment
Understanding the effect of nitrogen (N) rates on hemp (Cannabis sativa) cultivation is crucial for optimizing crop yield and quality. This study evaluated the effectiveness of handheld (active) and drone (passive) sensors in measuring crop reflectance ...
Aditya Singh   +2 more
exaly   +2 more sources

Assessment of the spatiotemporal variability of trees status in an olive orchard through multispectral drone images

open access: yesAfrican and Mediterranean Agricultural Journal - Al Awamia, 2022
Precision Agriculture (PA) is a management strategy based on Information and Communication Technologies (ICT) used to assist management decisions with the aim to increase productivity, to reduce labor time and inputs needed, to improve benefits and to ...
S. El Iraqui El Houssaini   +8 more
doaj   +1 more source

Detection of Management Practices and Cropping Phases in Wild Lowbush Blueberry Fields Using Multispectral UAV Data

open access: yesCanadian Journal of Remote Sensing, 2022
Normalized difference vegetation index (NDVI) and normalized difference red-edge index (NDRE) are vegetation indices commonly used in agriculture to provide information on crop’s growth and health. Here, we investigated the sensitivity of both indices to
Charles Marty   +5 more
doaj   +1 more source

Evaluating Decision Support Tools for Precision Nitrogen Management on Creeping Bentgrass Putting Greens

open access: yesFrontiers in Plant Science, 2022
Nitrogen (N) is the most limiting nutrient for turfgrass growth. Few tools or soil tests exist to help managers guide N fertilizer decisions. Turf growth prediction models have the potential to be useful, but the lone turfgrass growth prediction model ...
Qiyu Zhou, Douglas J. Soldat
doaj   +1 more source

ANALYSIS ON THE EFFECT OF SPATIAL AND SPECTRAL RESOLUTION OF DIFFERENT REMOTE SENSING DATA IN SUGARCANE CROP YIELD STUDY [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
Sugarcane is a perennial crop that contributes to nearly 80% of the global sugar-based products. Therefore, sugarcane growers and food companies are seeking ways to address the concerns related to sugarcane crop yield and health. In this study, a spatial
S. Akbarian, C.-Y. Xu, S. Lim
doaj   +1 more source

Using an Active Sensor to Develop New Critical Nitrogen Dilution Curve for Winter Wheat

open access: yesSensors, 2020
Critical nitrogen (N) dilution curves (CNDCs) have been developed to describe the dilution dynamic of N and to diagnose N status in plants. In this study, to develop a convenient alternative CNDC determination method, four field experiments involving ...
Jie Jiang   +7 more
doaj   +1 more source

Land Cover and Crop Classification Based on Red Edge Indices Features of GF-6 WFV Time Series Data

open access: yesRemote Sensing, 2021
Time series of vegetation indices can be utilized to capture crop phenology information, and have been widely used in land cover and crop classification, phenological feature extraction, and planting structure monitoring.
Yupeng Kang   +6 more
doaj   +1 more source

Estimation of Productivity and Above-Ground Biomass for Corn (Zea mays) via Vegetation Indices in Madeira Island

open access: yesAgriculture, 2023
The advancement of technology associated with the field, especially the use of unmanned aerial vehicles (UAV) coupled with multispectral cameras, allows us to monitor the condition of crops in real time and contribute to the field of machine learning ...
Fabrício Lopes Macedo   +6 more
doaj   +1 more source

Comparative Sensitivity of Vegetation Indices Measured via Proximal and Aerial Sensors for Assessing N Status and Predicting Grain Yield in Rice Cropping Systems

open access: yesRemote Sensing, 2022
Reflectance-based vegetation indices can be valuable for assessing crop nitrogen (N) status and predicting grain yield. While proximal sensors have been widely studied in agriculture, there is increasing interest in utilizing aerial sensors.
Telha H. Rehman   +2 more
doaj   +1 more source

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