Seasonal dynamics of surface energy fluxes over a center-pivot irrigated cropland in Saudi Arabia

Madugundu, Rangaswamy; Al‐Gaadi, Khalid A.; Tola, ElKamil; Kayad, Ahmed; Hassaballa, Abdalhaleem A.; Patil, V. C.

doi:10.22438/jeb/38/5/mrn-383

Cited by 8 publications

(3 citation statements)

References 21 publications

(24 reference statements)

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“…Studies have shown that water vapor flux and VPD (vapor pressure difference) have a certain quadratic curve relationship: water vapor flux first increases with the increase of VPD, then decreases with increase of VPD, as shown in Fig. 5 (Wang, 2011;Madugundu et al, 2017). VPD can represent the relationship between air drying degree and transpiration, the drier the air is, the more conducive to vegetation transpiration.…”

Section: Effect Of Vpd On Water Vapor Flux Of Wetlandmentioning

confidence: 99%

Characteristics of water vapor flux of riverside wetland ecosystem in cold regions and its influence analysis

Wang¹,

Ma²,

Zhao³

et al. 2019

JEB

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The aim of this study was to provide some scientific reference for the protection and restoration of the riverside wetland ecosystem in the cold regions. The study was based on the measurement data of Eddy Covariance observation experiment, to research the variations of water vapor flux over daily and seasonal scales of ecosystem in experimental area, and the factors affecting water vapor flux. This study showed that the diurnal changes of water vapor flux were in a single-peak type, the maximum values appeared between12:00-15:00 hr. On a seasonal scale, the highest value appeared in summer and lowest appeared in winter, and the daily accumulated value of water vapor flux in the growing season was 2.83 times higher than the non-growing season. The water vapor flux was mainly affected by vapor pressure difference, air temperature and radiation, among which radiation had the greatest influence on water vapor flux.

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Section: Effect Of Vpd On Water Vapor Flux Of Wetlandmentioning

confidence: 99%

Characteristics of water vapor flux of riverside wetland ecosystem in cold regions and its influence analysis

Wang¹,

Ma²,

Zhao³

et al. 2019

JEB

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“…Proximal sensors collect data from a distance less than 2 m from the target (e.g., soil or canopy) [5]. The most widely used proximal sensors in PA are yield monitors, weather stations [6], soil apparent electrical conductivity sensors [7] and vegetation spectroradiometers [8]. Proximal data provided by tractor-embedded sensors can be used to detect indirect suitable information to manage field variability (e.g., speed, engine power supplied, fuel Agronomy 2021, 11, 2098 2 of 20 consumption).…”

Section: Introductionmentioning

confidence: 99%

Economic Comparison of Satellite, Plane and UAV-Acquired NDVI Images for Site-Specific Nitrogen Application: Observations from Italy

et al. 2021

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Defining the most profitable remote sensing platforms is a difficult decision-making process, as it requires agronomic and economic considerations. In this paper, the price and profitability of three levels of remote sensing platforms were evaluated to define a decision-making process. Prices of satellite, plane and UAV-acquired vegetation indices were collected in Italy during 2020 and compared to the economic benefits resulting from variable rate nitrogen application, according to a bibliographic meta-analysis performed on grains. The quality comparison of these three technologies was performed considering the error propagation in the NDVI formula. The errors of the single bands were used to assess the optical properties of the sensors. Results showed that medium-resolution satellite data with good optical properties could be profitably used for variable rate nitrogen applications starting from 2.5 hectares, in case of medium resolution with good optical properties. High-resolution satellites with lower optical quality were profitable starting from 13.2 hectares, while very high-resolution satellites with good optical properties could be profitably used starting from 76.8 hectares. Plane-acquired images, which have good optical properties, were profitable starting from 66.4 hectares. Additionally, a reference model for satellite image price is proposed.

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“…Research is also done for the development of new highly performing materials, especially with biodegradable properties [9], in accordance with a common attention for the environment [10]. The growing attention on environment [11][12] has brought noticeable drawbacks in the development or evolution of treatments with sustainable management approaches [13], optimized treatments and fertilizers distributions [7,14], organic productions and in general products, which are less impacting on soil, air and water [15][16][17]. Reduction of impacts passes through the optimization of energy resources: many works have been recently done to find new resources [18; 19] and to minimize energy consumptions related to different agricultural processes [20].…”

Section: Introductionmentioning

confidence: 99%

Patent trends in agricultural engineering

Sozzi

Cogato

Stefano

et al. 2018

Engineering for Rural Development

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Inventions play an important role in all sectors of our society, including the agricultural sector. As they have played an essential role in the development of our agricultural system in the past, inventions can and should be of importance as a driver for innovations towards sustainable development of agriculture in the future. The present paper analyses the current status of agricultural and bioresource engineering patents, with the aim to define the current trends and potentials of agricultural engineering. The research takes advantage of the EspaceNet patent database, which has indexed more than 38900 patents in agricultural engineering since the beginning of the century. The analysis starts from a selection of most recurrent words in this database, and proposes a clusterization in thematic groups. Then, comparisons are carried out both on thematic groups and on single terms, in order to determine trends, recognise correlations, and eventually identifying most strategic areas. The results highlight a growing attention on machinery, on data and automation, while lower relevance is progressively covered by chemical treatments. Specifically, a clear relevance is noticed on agricultural vehicles and implements, on irrigation systems and on greenhouses.

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Seasonal dynamics of surface energy fluxes over a center-pivot irrigated cropland in Saudi Arabia

Cited by 8 publications

References 21 publications

Characteristics of water vapor flux of riverside wetland ecosystem in cold regions and its influence analysis

Characteristics of water vapor flux of riverside wetland ecosystem in cold regions and its influence analysis

Economic Comparison of Satellite, Plane and UAV-Acquired NDVI Images for Site-Specific Nitrogen Application: Observations from Italy

Patent trends in agricultural engineering

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