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Journal articles on the topic 'Plants – Effect of solar radiation on'

Author: Grafiati

Published: 4 June 2021

Last updated: 31 January 2023

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1

Kataria, Sunita, Sanjay S. Baroniya, M. Kanungo, and L. Bhaghel. "Effect of Exclusion of Solar UV radiation on Plants." Plant Science Today 1, no. 4 (2014): 224–32. http://dx.doi.org/10.14719/pst.2014.1.4.61.

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Moskalenko, N. I., A. R. Akhmetshin, Ya S. Safiullina, I. R. Dodov, and M. S. Khamidullina. "Simulation of the impact of the atmospheric weather state on the efficiency of functioning of solar thermal and power plants." Power engineering: research, equipment, technology 23, no. 5 (2022): 86–99. http://dx.doi.org/10.30724/1998-9903-2021-23-5-86-99.

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THE PURPOSE. Determine the impact of the meteorological state of the atmosphere on the efficiency of the functioning of solar thermal and power plants. Modeling the molecular absorption of solar radiation by the atmosphere. Modeling the optical characteristics of the gaseous components of the atmosphere, atmospheric aerosol and clouds.METHODS. A method for numerical modeling of incoming solar radiation fluxes their functioning to determine the efficiency of solar thermal and power plants. The solar fluxes are calculated by stacking layers in a multi-stream approximation, taking into account th

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J. S. BRAR, SOM PAL SINGH, and J. S. BAL. "Physico-chemical properties of guava fruits as influenced by solar radiation penetration in plants canopies." Journal of Agrometeorology 13, no. 1 (2011): 50–53. http://dx.doi.org/10.54386/jam.v13i1.1334.

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The study was conducted to observe the solar radiation distribution in different parts of 7- year’s old guava plants and its subsequent effect on fruit quality. The interception of solar radiation decreased markedly with the depth of plant canopy from top to bottom as well as with increase in plant density. More than 3/4th of incoming radiations were found to be intercepted by upper one meter periphery of guava plants irrespective of plant spacing. The fruit quality in terms of size, weight, TSS, vitamin C and overall palatability reduced significantly with the depth of plant canopy and decrea

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aborawash, Soliman, Muharram Abdu Allah El Din, Kamal Radwan, and Huda El-Gamal. "Plants, Shade and Solar Radiation Effect on Bio-Aerosol Pollution in Wastewater Treatment Plants." Bulletin of the Faculty of Engineering. Mansoura University 43, no. 4 (2020): 1–5. http://dx.doi.org/10.21608/bfemu.2020.95715.

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Mubarak, Syahrun, Impron ,, and Dan Tania June. "Efisiensi Penggunaan Radiasi Matahari dan Respon Tanaman Kedelai (Glycine max L.) terhadap Penggunaan Mulsa Reflektif." Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) 46, no. 3 (2019): 247–53. http://dx.doi.org/10.24831/jai.v46i3.18220.

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One of factors affecting the productivity of soybean crop is the availability of solar radiation. Reduction of solar radiation reaching soybean crop by cloud cover especially during rainy season or by shade of trees could potentially decrease soybean production. The availability of radiation for the crop can be increased through the use of reflective mulch to reflect back transmitted radiation to the crop canopy. This study aimed to determine the effect of shade and reflective mulch on crop solar radiation balance and crop productivity responses. A field experiment in Bogor, Indonesia in July

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Sandri, Miguel Angelo, Jerônimo Luiz Andriolo, Marcio Witter, and Tiago Dal Ross. "Effect of shading on tomato plants grow under greenhouse." Horticultura Brasileira 21, no. 4 (2003): 642–45. http://dx.doi.org/10.1590/s0102-05362003000400013.

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The experiment was conducted at Universidade Federal de Santa Maria, Rio Grande do Sul State, Brazil, to determine the effect of shading on tomato plants grown in a greenhouse. Sowing was done on July 4th and planting on August 27th, 2000, in a plant density of 3.3 plants m-2, using an organic commercial rooting medium. Water and nutrients were supplied on a daily basis using a nutrient solution. Two polyethylene tunnels (2.20 m height, 5 m width, 15 m length) were used. In the first plastic tunnel, used as control, the transmissivity of global radiation was 83% and plants were conducted as a

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Ayadi, Ahmed, Zied Driss, Abdallah Bouabidi, and Mohamed S. Abid. "Effect of the turbine diameter on the generated power of a solar chimney power plant." Energy & Environment 29, no. 5 (2018): 822–36. http://dx.doi.org/10.1177/0958305x18761148.

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The solar chimney power plants produce electricity and thermal heat using the solar radiation. The thermal study of the solar chimney power plants is required since these systems are characterized by their high costs. This paper focuses on the study of a solar chimney power plant coupled with a turbine to increase the generated power. Thus, four turbine diameters are proposed. For each configuration, the distribution of the magnitude velocity, the air temperature, and the pressure was discussed. The results indicate that the generated power increases with the increase of the turbine diameter.

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AHMED, Mukhtar, and Fayyaz-ul HASSAN. "Cumulative Effect of Temperature and Solar Radiation on Wheat Yield." Notulae Botanicae Horti Agrobotanici Cluj-Napoca 39, no. 2 (2011): 146. http://dx.doi.org/10.15835/nbha3925406.

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The impact of temperature and solar radiations were studied as determinant factor for spring wheat grain yield. The data obtained at anthesis and maturity for grain number (GN), grain weight (GW) and grain yield (Y) were examined with mean temperature at anthesis (T1) and maturity (T2), solar radiation at anthesis (SR1) and maturity (SR2) and photothermal quotient (PTQ) at anthesis (PTQ1) and maturity (PTQ2). The data obtained was subjected to Statistica 8 software and scatter plot regression model was developed at 95% confidence interval with crop data and climate variables (T1, T2, SR1, SR2,

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Luo, Dapeng, Jielin Li, Jianxun Luo, et al. "Responses to Solar UV-B Exclusion and Drought Stress in Two Cultivars of Chestnut Rose with Different Leaf Thickness." Forests 14, no. 1 (2022): 50. http://dx.doi.org/10.3390/f14010050.

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Plants adopt a series of strategies to tolerate solar UV-B radiation (with the side effects of growth reduction), but the positive effects of solar UV-B radiation have not been yet clarified. In this study, two cultivars with different leaf thickness for Chestnut rose (Rosa roxburghii Tratt), a pioneering species for ecological restoration in Karst region of Southwest China, were employed to investigate its responses to ultraviolet-B (UV-B) exclusion, moderate drought, and their combination in an outdoor experiment. Thin-leaf cultivars (Gui 2) adopt an opportunistic growth strategy, growing be

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Khalgaeva, Nadezhda, and Tatyana Tuguzova. "Prerequisites for using solar potential to supply power to consumers in the central ecological area of the Baikal natural territory." E3S Web of Conferences 77 (2019): 04006. http://dx.doi.org/10.1051/e3sconf/20197704006.

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We address the possibility for using solar potential to supply power to consumers in the central ecological zone of the Baikal natural territory, given its special conservation status. Based on an analysis of observations made during expeditions, we revealed the specific features of the location of the settlements and the sites where solar equipment is installed. The considered territory was zoned based on an analysis of the solar potential parameters. The paper presents the priority areas for the solar potential implementation for energy purposes, with a focus on the potential sites for insta

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Villa, Bruna de, Mirta Teresinha Petry, Maicon Sérgio Nascimento dos Santos, et al. "Effects of Minimum and Maximum Limits of Solar Radiation and Its Temporal and Geographic Interactions." Journal of Agricultural Science 14, no. 8 (2022): 173. http://dx.doi.org/10.5539/jas.v14n8p173.

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In order to achieve high yields, the use of radiation by agricultural crops must be improved in order to maximize and extend the duration of foliar interception of solar radiation. Appropriately, studies aimed at the understanding and behavior of radiation in plants are extremely relevant. Accordingly, the objective of this study was to approach information about the concepts, radiation availability temporal, geographical, photosynthesis efficiency as a function of leaf arrangement and radiation interception efficiency &times; leaf area index (LAI). Studies aimed at a significant comprehen

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Yang, Yunshan, Guangzhou Liu, Xiaoxia Guo, et al. "Effect Mechanism of Solar Radiation on Maize Yield Formation." Agriculture 12, no. 12 (2022): 2170. http://dx.doi.org/10.3390/agriculture12122170.

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Solar dimming due to global climate change is becoming increasingly more common in some agricultural areas. Such low-light stress inhibits maize ear number, kernel number per unit area (KN), and kernel weight (KW) as vital yield components. However, which yield component factors are most important for yield formation under low-light stress remains unknown. In this study at Qitai Farm in Xinjiang, China, in 2019 and 2020, we planted three maize (Zea mays L.) cultivars (Denghai 618 (DH618), Xianyu 335 (XY335), and Zhengdan 958 (ZD958)) at two densities (7.5 × 104 (D1) and 12 × 104 (D2) plants ha

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Moncur, MW. "Effect of Low Temperature on Floral Induction of Eucalyptus lansdowneana F. Muell. & J. Brown subsp. lansdowneana." Australian Journal of Botany 40, no. 2 (1992): 157. http://dx.doi.org/10.1071/bt9920157.

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Transferring seedlings of Eucalyptus lansdowneana from a heated glasshouse (24/19°C) to a cold glasshouse (15/10°C) for 5 or 10 weeks and back to the heated glasshouse was sufficient to induce floral buds. Bud production was further enhanced when seedlings were transferred to cold conditions during periods of high solar radiation. Under low levels of solar radiation and short duration of cold, 0-5 weeks, plants reverted to vegetative development, suggesting a low floral induction stimulus. Seedlings that produced a visible floral inflorescence had fewer leaves than seedlings grown under simila

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Jacobs, Janette L., and George W. Sundin. "Effect of Solar UV-B Radiation on a Phyllosphere Bacterial Community." Applied and Environmental Microbiology 67, no. 12 (2001): 5488–96. http://dx.doi.org/10.1128/aem.67.12.5488-5496.2001.

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ABSTRACT The effect of solar UV-B radiation on the population dynamics and composition of the culturable bacterial community from peanut (Arachis hypogeae L.) was examined in field studies using plants grown under UV-B−transmitting (UV-B+) or UV-B−excluding (UV-B−) plastic filters. Our data demonstrate that solar UV-B selection alters phyllosphere bacterial community composition and that UV tolerance is a prevalent phenotype late in the season. The total bacterial population size was not affected by either UV-B treatment. However, isolates from the UV-B+ plots (n = 368) were significantly more

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Solovyev, Alexander, Dmitry Solovyev, and Liubov Shilova. "NUMERICAL MODELING OF CYCLOTRON FLOW ACCELERATION MODES IN AERODYNAMIC MODULES OF SOLAR AEROBARIC POWER PLANTS." International Journal for Computational Civil and Structural Engineering 18, no. 1 (2022): 61–71. http://dx.doi.org/10.22337/2587-9618-2022-18-1-61-71.

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When constructing solar aerobaric power plants, it is necessary to develop effective ways to accelerate convective flows initiated by the action of a high-temperature working fluid heated due to the concentration of solar radiation, accumulation of dissipated heat losses and the use of the greenhouse effect. As an option for organizing the flow in the aerodynamic module of the solar aerobaric power plants, article considered a diagram of the cyclotron acceleration of the flow during horizontal and vertical transfer of convective air currents formed in cells containing alternately located cold

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Higashide, Tadahisa. "Prediction of Tomato Yield on the Basis of Solar Radiation Before Anthesis under Warm Greenhouse Conditions." HortScience 44, no. 7 (2009): 1874–78. http://dx.doi.org/10.21273/hortsci.44.7.1874.

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Effects of solar radiation and temperature in different periods before and after anthesis on yield of tomato (Solanum lycopersicum) in summer greenhouse cultivation were investigated. Fluctuations in yield were caused mainly by the variation in fruit number rather than fruit weight. The number of harvested fruit and the yield of plants grown in summer and fall were significantly and positively correlated with solar radiation during the days before anthesis. Although the fruit number and yield were also significantly correlated with air temperature before anthesis, the correlations were weaker

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Russotto, Rick D., and Thomas P. Ackerman. "Changes in clouds and thermodynamics under solar geoengineering and implications for required solar reduction." Atmospheric Chemistry and Physics 18, no. 16 (2018): 11905–25. http://dx.doi.org/10.5194/acp-18-11905-2018.

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Abstract. The amount of solar constant reduction required to offset the global warming from an increase in atmospheric CO2 concentration is an interesting question with implications for assessing the feasibility of solar geoengineering scenarios and for improving our theoretical understanding of Earth's climate response to greenhouse gas and solar forcings. This study investigates this question by analyzing the results of 11 coupled atmosphere–ocean global climate models running experiment G1 of the Geoengineering Model Intercomparison Project, in which CO2 concentrations are abruptly quadrupl

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Quevedo, Yeison Mauricio, José Isidro Beltrán, and Eduardo Barragán-Quijano. "Effect of sowing density on yield and profitability of a hybrid corn under tropical conditions." Agronomía Colombiana 36, no. 3 (2018): 248–56. http://dx.doi.org/10.15446/agron.colomb.v36n3.71268.

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A high sowing density in maize is a widely used management practice for increasing crop yield; this method increases intraspecific competition for solar radiation, nutrients and water, so yield per plant is reduced, but a greater number of plants is harvested. However, different corn hybrids present a differential behavior because some are tolerant and some are susceptible to this condition, as determined by their plasticity in adjusting their morphology and phenology. The aim of this study was to identify the optimum sowing density, in technical and economic terms, of a new hybrid corn named

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Hashimoto, Naoyuki, Yuki Saito, Masayasu Maki, and Koki Homma. "Simulation of Reflectance and Vegetation Indices for Unmanned Aerial Vehicle (UAV) Monitoring of Paddy Fields." Remote Sensing 11, no. 18 (2019): 2119. http://dx.doi.org/10.3390/rs11182119.

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Reflectance and vegetation indices obtained from aerial images are often used for monitoring crop fields. In recent years, unmanned aerial vehicles (UAVs) have become popular and aerial images have been collected under various solar radiation conditions. The value of observed reflectance and vegetation indices are considered to be affected by solar radiation conditions, which may lead to inaccurate estimations of crop growth. In this study, in order to evaluate the effect of solar radiation conditions on aerial images, canopy reflectance in paddy fields was simulated by a radiative transfer mo

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Zermeño González, Alejandro, José Ángel Marroquín Morales, Aaron Isain Melendres Alvarez, Homero Ramírez Rodríguez, Martín Cadena Zapata, and Santos Gabriel Campos Magaña. "Propiedades espectrales de la cubierta de macro túneles y su relación con el crecimiento y rendimiento del chile poblano (Capsicum annuum L.)." REVISTA TERRA LATINOAMERICANA 37, no. 3 (2019): 253. http://dx.doi.org/10.28940/terra.v37i3.473.

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With protected agriculture, plants are sheltered from adverse climatic conditions, and the solar radiation that impacts the plants is modif ied with the purpose of improving their productivity. Therefore, the objective of our study was to evaluate the effect of the material and color of four greenhouse covers over the rate and spectral characteristics of the transmitted radiation, and their relation with chlorophyll content, growth and yield of poblano pepper (Capsicum annuum L.) cv Ébano culture. The study was conducted in four oval shaped macro-tunnels (4 m wide, 2.5 m high and 12 m long). T

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Alonso-Montesinos, Joaquín, Francisco Rodríguez Martínez, Jesús Polo, Nuria Martín-Chivelet, and Francisco Javier Batlles. "Economic Effect of Dust Particles on Photovoltaic Plant Production." Energies 13, no. 23 (2020): 6376. http://dx.doi.org/10.3390/en13236376.

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The performance of photovoltaic panels decreases depending on the different factors to which they are subjected daily. One of the phenomena that most affects their energy production is dust deposition. This is particularly acute in desert climates, where the level of solar radiation is extreme. In this work, the effect of dust soiling is examined on the electricity generation of an experimental photovoltaic pilot plant, installed at the Solar Energy Research Center (CIESOL) at the University of Almería. An average reduction of 5% of the power of a photovoltaic plant due to dust contamination h

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Fischer, Gerhard, Fernando Ramírez, and Fánor Casierra-Posada. "Ecophysiological aspects of fruit crops in the era of climate change. A review." Agronomía Colombiana 34, no. 2 (2016): 190–99. http://dx.doi.org/10.15446/agron.colomb.v34n2.56799.

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The increased concentration of carbon dioxide (CO2) and other greenhouse effect gases has led to global warming, which has resulted in climate change, increased levels of ultraviolet (UV) radiation and changes in the hydrological cycle, affecting the growth, development, production and quality of fruit crops, which undoubtedly will be difficult to predict and generalize because the physiological processes of plants are multidimensional. This review outlines how the effects of high/low solar radiation, temperature, water stress from droughts, flooding and rising levels of CO2 in the atmosphere

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KAVGA, Angeliki, Georgios TRYPANAGNOSTOPOULOS, George ZERVOUDAKIS, and Yiannis TRIPANAGNOSTOPOULOS. "Growth and Physiological Characteristics of Lettuce (Lactuca sativa L.) and Rocket (Eruca sativa Mill.) Plants Cultivated under Photovoltaic Panels." Notulae Botanicae Horti Agrobotanici Cluj-Napoca 46, no. 1 (2018): 206–12. http://dx.doi.org/10.15835/nbha46110846.

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Energy demand of greenhouses is an important factor for their economics and photovoltaics can be considered an alternative solution to cover their electrical and heating needs. On the other hand, plants cultivated under different solar radiation intensities usually appear different physiological adaptations. The objective of this research was to investigate the effect of photovoltaic panels’ induced partial shading on growth and physiological characteristics of lettuce (Lactuca sativa L.) and rocket (Eruca sativa Mill.) plants. Our results indicate that lettuce productivity and the correspondi

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Cechin, Inês, Terezinha de Fátima Fumis, and Anne Ligia Dokkedal. "Growth and physiological responses of sunflower plants exposed to ultraviolet-B radiation." Ciência Rural 37, no. 1 (2007): 85–90. http://dx.doi.org/10.1590/s0103-84782007000100014.

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The effects of UV-B radiation were studied in sunflower plants (Helianthus annuus L. cv. Catissol-01) growning in greenhouse under natural photoperiod conditions. The plants received approximately 0.60Wm-2 (control) or 4.0Wm-2 (+UV-B) of UV-B radiation for 7h d-1, centered around solar noon from 15 days after sowing. Compared to the control, plants exposed to high UV-B radiation for 12 or 21 days did not show any difference in shoot dry matter, specific leaf weight or UV-B absorbing compounds. Enhanced UV-B radiation caused a significant inhibition of photosynthesis (A) only in the first sampl

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Fatima, A., S. Kataria, K. N. Guruprasad, et al. "Synchrotron X-ray phase contrast imaging of leaf venation in soybean (Glycine max)after exclusion of solar UV (280–400 nm) radiation." Journal of Synchrotron Radiation 23, no. 3 (2016): 795–801. http://dx.doi.org/10.1107/s1600577516003507.

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The hydraulic efficiency of a leaf depends on its vascular structure as this is responsible for transport activities. To investigate the effect of exclusion of UVAB and UVB radiation from the solar spectrum on the micro-structure of leaves of soybean (Glycine max, variety JS-335), a field experiment was conducted using synchrotron-based phase contrast imaging (PCI). Plants were grown in specially designed UV exclusion chambers, and wrapped with filters that excluded UVB (280–315 nm) or UVAB (280–400 nm), or transmitted all the ambient solar UV (280–400 nm) radiation (filter control). Qualitati

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Kamarulzaman, Nurul Huda, Hasiah Salleh, Ahmad Nazri Dagang, Mohd Sabri Mohd Ghazali, Nurhayati Ishak, and Wan Farahiyah Wan Kamarudin. "NATURAL DYE’S PHOTODEGRADATION EFFECT TOWARDS OPTICAL PROPERTIES FOR SOLAR ENERGY APPLICATIONS." Jurnal Teknologi 85, no. 1 (2022): 167–76. http://dx.doi.org/10.11113/jurnalteknologi.v85.18790.

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Photodegradation effect to natural plant waste under solar irradiation was investigated. Five plants waste namely, Averrhoe Bilimbi, Eugenia Clavifora, Elaies Guineensis, Terminalia cattapa and Clidemia hirta were selected from all over the states. Main purpose of this research was to study the stability of natural dye in presence of sunlight radiation for future solar cell applications. FTIR and UV-Vis absorption were used to investigate the optical properties of dye. Eugenia Clavifora was clearly revealed that it took more than 10 weeks to degrade and required 64% of degradation percentage.

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Pulido-Mancebo, José S., Rafael López-Luque, Luis Manuel Fernández-Ahumada, José C. Ramírez-Faz, Francisco Javier Gómez-Uceda, and Marta Varo-Martínez. "Spatial Distribution Model of Solar Radiation for Agrivoltaic Land Use in Fixed PV Plants." Agronomy 12, no. 11 (2022): 2799. http://dx.doi.org/10.3390/agronomy12112799.

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Agrivoltaics is currently presented as a possible effective solution to one of society’s greatest challenges: responding to the increasing demand for energy and food in an efficient and sustainable manner. To this end, agrivoltaics proposes to combine agricultural and renewable energy production on the same land using photovoltaic technology. The performance of this new production model strongly depends on the interaction between the two systems, agricultural and photovoltaic. In that sense, one of the most important aspects to consider are the effects of the shadows of the photovoltaic panels

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Pidhorodetskiy, O. V., E. V. Titova, and V. I. Kravets. "Efficiency of using solar tracking systems with two degrees of freedom." Computer Modeling: Analysis, Control, Optimization 7, no. 1 (2020): 46–50. http://dx.doi.org/10.32434/2521-6406-2020-1-7-46-50.

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The article touches upon the problem of increasing the efficiency of the functioning of solar power plants. An effective way to increase the flow of solar energy to the inclined plane of photo converters is the introduction of systems that are able to change the spatial orientation of solar modules during daylight hours in the vertical and horizontal planes. The work focuses on determining the quantitative indicators of incident solar energy when using a space-oriented and stationary installation system of photo modules. The calculation method chosen by the authors allows finding the intensity

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Kamoutsis, A., A. Chronopoulou-Sereli, and C. Holevas. "Interaction of triapenthenol and environmental factors on the growth and flower bud formation of Gardenia jasminoides Ellis." Canadian Journal of Plant Science 78, no. 4 (1998): 635–40. http://dx.doi.org/10.4141/p97-120.

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The interaction effects between total solar radiation, air temperature and relative humidity with different concentrations of the plant growth regulator triapenthenol (Baronet) on the vegetative growth and the formation of flower buds of potted gardenia (Gardenia jasminoides Ellis) plants were studied in glasshouse experiments.Triapenthenol was applied as a soil drench at concentrations of 0, 70, 140 and 280 mg L–1 to plants under each of three radiation levels of about 250 (P1), 90 (P2) and 25 (P3) Wm−2. It was established that the maximum temperature was the most critical environmental facto

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Noor, Z., B. F. Simatupang, and Yonny Koesmaryono. "PERTUMBUHAN DAN PRODUKSI PAPRIKA PADA BERBAGAI INTENSITAS RADIASI SURYA DI DATARAN RENDAH, BATAM(GROWTH AND PRODUCTION OF SWEET PEPPER CULTIVATED UNDER DIFFERENT SOLAR RADIATION INTENSITY AT LOWLAND REGION OF BATAM)." Agromet 19, no. 2 (2005): 57. http://dx.doi.org/10.29244/j.agromet.19.2.57-67.

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<p>An experiment has been conducted in Batam Island to study the response of sweet pepper which cultivated at lowland of 20 m asl, during November 2001 to May 2002. Five varieties have been used namely, Bangkok, Gold Flame, New Zealand, Spartacus and Tropica. Plants cultivated using hydroponic system under plastic house with ultra violet protection. The radiation of 100% (control) and it reduce of 25% and 50% used as treatment in order to determine the microclimate favourable for growing pepper in lowland. The results shown that reducing radiation intensity has influenced significantly o

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Vijayalakshmi, C., R. Radhakrishnan, M. Nagarajan, and C. Rajendran. "Effect of Solar Radiation Deficit on Rice Productivity." Journal of Agronomy and Crop Science 167, no. 3 (1991): 184–87. http://dx.doi.org/10.1111/j.1439-037x.1991.tb00952.x.

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Cechin, Inês, Valéria de Jesus Rocha, and Terezinha de Fátima Fumis. "Sensitivity of yellow passion fruit to ultraviolet-B radiation." Pesquisa Agropecuária Brasileira 47, no. 10 (2012): 1422–27. http://dx.doi.org/10.1590/s0100-204x2012001000002.

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The objective of this work was to evaluate the effects of UV-B radiation on the vegetative growth and on the gas exchange characteristics of passion fruit plants (Passiflora edulis) grown in greenhouse. The average unweighted UV-B radiation near the apex of the plants was 8 W m-2 for the UV-B treatment (high UV-B), and 0.8 W m-2 for the control plants (low UV-B). Plants were irradiated with UV-B for 7 hours per day, centered on solar noon, during 16 days. High UV-B radiation resulted in lower shoot dry matter accumulation per plant. The content of UV-B absorbing compounds and anthocyanins was

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Young, Heather M., Sheeja George, Dario F. Narváez, et al. "Effect of Solar Radiation on Severity of Soybean Rust." Phytopathology® 102, no. 8 (2012): 794–803. http://dx.doi.org/10.1094/phyto-10-11-0294.

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Soybean rust (SBR), caused by Phakopsora pachyrhizi, is a damaging fungal disease of soybean (Glycine max). Although solar radiation can reduce SBR urediniospore survival, limited information is available on how solar radiation affects SBR progress within soybean canopies. Such information can aid in developing accurate SBR prediction models. To manipulate light penetration into soybean canopies, structures of shade cloth attenuating 30, 40, and 60% sunlight were constructed over soybean plots. In each plot, weekly evaluations of severity in lower, middle, and upper canopies, and daily tempera

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Wurr, D. C. E., Jane R. Fellows, and Angela J. Pittam. "The influence of plant raising conditions and transplant age on the growth and development of crisp lettuce." Journal of Agricultural Science 109, no. 3 (1987): 573–81. http://dx.doi.org/10.1017/s002185960008179x.

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SummaryThe influences of the temperature during plant raising and the age of plants at transplanting on the time of hearting and head weight at maturity of the crisp lettuce variety Saladin R100 were determined in seven experiments between 1984 and 1986.Plants raised at ambient temperatures and transplanted before the end of May produced heads which were heavier and matured later than those from plants raised at higher temperatures under glass. The influence of transplant age on head weight was much smaller than that of raising conditions and there were inconsistent effects on the time of crop

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Dąbrowski, P., B. Pawluśkiewicz, Kalaji HM, and Baczewska AH. "The effect of light availability on leaf area index, biomass production and plant species composition of park grasslands in Warsaw ." Plant, Soil and Environment 59, No. 12 (2013): 543–48. http://dx.doi.org/10.17221/140/2013-pse.

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How light conditions affect development of park grasslands is a question that has not been satisfactory addressed. The aim of this study was therefore determination of the level to which unfavorable light conditions influence grassy parks area and relationships between parameters which determine state of turf grasses. Researches were conducted in two parks in Warsaw, in various light conditions and included measurement of: leaf density, sward height, leaf area index (LAI), and botanical composition of the communities. The leaf density of shaded areas did not exceed 70%. LAI value varied from 0

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Urbanc-Bercic, Olga, and Alenka Gaberšcik. "Reed stands in constructed wetlands: “edge effect” and photochemical efficiency of PS II in common reed." Water Science and Technology 35, no. 5 (1997): 143–47. http://dx.doi.org/10.2166/wst.1997.0184.

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In this study an attempt has been made to estimate the vitality of the common reed (Phragmites australis) grown in the constructed wetland. The efficiency of solar radiation uptake of leaves was measured and terminal electron transport system (ETS) activity of roots was determined in specimens from different locations on the reed bed. The results showed that photochemical efficiency of PS II, expressed as FvFm ratio, was higher in plants growing in the middle of the well established stand, but it was lower in plants growing in the area permanently flooded with leachate, where plants were signi

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Ayadi, Ahmed, Zied Driss, Abdallah Bouabidi, and Mohamed Salah Abid. "Effect of the number of turbine blades on the air flow within a solar chimney power plant." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 232, no. 4 (2017): 425–36. http://dx.doi.org/10.1177/0957650917733128.

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Solar chimney power plants generate thermal heat and electrical power using the radiation from sun. These systems are characterized by their high costs. In fact, it is required to optimize the components of the solar system such as the collector, the chimney, the absorber, and the turbine. This paper focuses on the effect of the number of turbine blades on the air flow within a small prototype of a solar chimney power plant. Four configurations with different turbine blades are proposed to study the effect of the turbine blades number on the thermal characteristics of a solar chimney power pla

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Souza, Eduardo G., Peter Scharf, Ken A. Sudduth, and James D. Hipple. "Using a field radiometer to estimate instantaneous sky clearness." Revista Brasileira de Engenharia Agrícola e Ambiental 10, no. 2 (2006): 369–73. http://dx.doi.org/10.1590/s1415-43662006000200018.

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Reflectance measurements of crop plants and canopies show promise for guiding within-season, variable-rate nitrogen (N) application. Most research results have been obtained around solar noon with clear skies. However, for practical application, the system must work under cloudy skies or away from solar noon. The objective of this work was to assess the effect of cloud conditions on reflectance measurements of a corn canopy. The approach was to estimate an instantaneous sky clearness index (ICI) which could be used to correct field radiometer data for variations in cloud cover, such that the s

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Safer Nabil Belkacem. "The Effect of The Inclusion of The Secondary Roof Under the Main Roof on Performance of Chimney Solar Power Plants." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 98, no. 1 (2022): 157–70. http://dx.doi.org/10.37934/arfmts.98.1.157170.

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In this work the effect of the inclusion a second roof on the power output of chimney solar power plant (SCPP) were investigated numerically through analytical model. The analytical model presented in this work based on energy balance equations and mass conservation equation at steady state. In second step, the proposed analytical model is then used to estimate the annual electricity production in Sétif, a region of Algeria. For the position of the sun in Setif is 36.19 degrees longitude and 5.41 degrees latitude. It appears from results obtained that the efficiency is increased by 28.7 % for

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Morais, Heverly, Paulo Henrique Caramori, Ana Maria de Arruda Ribeiro, José Carlos Gomes, and Mirian Sei Koguishi. "Microclimatic characterization and productivity of coffee plants grown under shade of pigeon pea in Southern Brazil." Pesquisa Agropecuária Brasileira 41, no. 5 (2006): 763–70. http://dx.doi.org/10.1590/s0100-204x2006000500007.

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Recent studies on coffee (Coffea arabica L.) cultivation in agroforestry systems in Southern Brazil have shown the potential of partial shading to improve management of this crop. The objective of this work was to evaluate microclimatic conditions and their effects on coffee production of plants shaded with pigeon pea (Cajanus cajan) in comparison to unshaded ones, from May 2001 to August 2002 in Londrina, State of Paraná, Brazil. The appraised microclimatic characteristics were: global radiation, photosynthetic and radiation balance; air, leaf and soil temperatures; and soil humidity. Shading

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Guo, Xiaoxia, Yunshan Yang, Huifang Liu, et al. "Effects of Solar Radiation on Dry Matter Distribution and Root Morphology of High Yielding Maize Cultivars." Agriculture 12, no. 2 (2022): 299. http://dx.doi.org/10.3390/agriculture12020299.

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The root system connects the plant with the soil, which is a key factor in determining the utilization of soil resources and plant growth potential. Solar radiation can change maize shoot and root growth and affect grain formation. In this study, the effects of different solar radiation conditions on root morphology of three maize cultivars XY335, ZD958 and DH618 and their quantitative relationships were studied by conducting shading experiments. This study was conducted in maize high yield region of Qitai and Yinchuan, China, in 2018 and 2019. The planting densities were 7.5 × 104 (D1) and 12

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Cuce, Pinar Mert, Erdem Cuce, Saad Alshahrani, et al. "Performance Evaluation of Solar Chimney Power Plants with Bayburt Stone and Basalt on the Ground as Natural Energy Storage Material." Sustainability 14, no. 17 (2022): 10960. http://dx.doi.org/10.3390/su141710960.

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This research examines the effect of using Bayburt stone or basalt as an energy storage unit in SCPPs. The effect of using low-cost materials on the system performance is evaluated. Based on the Manzanares pilot plant (MPP), a 3D CFD model was created. Geometric parameters were kept constant in simulations performed with ANSYS FLUENT engineering commercial software. In addition to DO (discrete coordinates) for the radiation model, the solar ray-tracing algorithm (SRTA) and the RNG k-e turbulence model (RNGTM) were solved, coupled, and the outputs of the system were evaluated at outdoor tempera

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Dmitriev, A. S., N. F. Ivlev, and Petr G. Makarov. "Evaporation Rate Management Using Substrates with Graphene Nanoflakes Coating." Materials Science Forum 992 (May 2020): 802–8. http://dx.doi.org/10.4028/www.scientific.net/msf.992.802.

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This work is devoted to finding of a solution of the actual problem of modern solar power engineering that consists in incomplete conversion of the Planck spectrum of solar radiation using photoelectric conversion. Concentrated solar power being an alternative faces other limiting features such as high cost of building and maintenance, large areas occupied by these plants, the need of precise adjustment of mirrors-lenses systems and also its detrimental effect on nature, birds in particular. An intensification of vaporization from the surface of water can become a solution. In this work a thin

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Marucci, Alvaro, Danilo Monarca, Massimo Cecchini, Andrea Colantoni, Alberto Manzo, and Andrea Cappuccini. "The Semitransparent Photovoltaic Films for Mediterranean Greenhouse: A New Sustainable Technology." Mathematical Problems in Engineering 2012 (2012): 1–14. http://dx.doi.org/10.1155/2012/451934.

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Mediterranean countries offer very favorable climatic conditions for growing plants in a protected environment: as a matter of fact, the high solar radiation allows the use of greenhouses with simple structures, covered with plastic film and without fixed installations for winter heating. They are called “Mediterranean greenhouses” and are totally different from those in Central and Northern Europe. In the photovoltaic greenhouses, the cover on the pitch facing south is usually replaced by very opaque panels. However, this solution compromises the possibility to grow plants in covered and prot

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Abedini, Masoumeh, Shirwan Malaei, and Behrokh Daei-Hassani. "UVA + B treatment affects antioxidant system and phytochemicals of parsley plant under different concentrations of Zn." Acta agriculturae Slovenica 109, no. 2 (2017): 241. http://dx.doi.org/10.14720/aas.2017.109.2.08.

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<p>Decline in ozone layer that followed by enhanced solar UV radiation is a limiting factor for some plants. In this study the effect of UVA+UVB radiation on parsley plant was studied hydroponically at different concentrations of Zn (1.5 and 6.5 µm). UV radiation at both concentrations of Zn, slightly decreased the plant growth and significantly increased the carotenoids, flavonoids, total phenols and H<sub>2</sub>O<sub>2</sub> contents, but had no effect on chlorophylls content. At concentration of 1.5 µm of Zn, UV radiation caused significant increases in the MD

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Palencia, Pedro, Fátima Martínez, Juan Jesús Medina, and José López-Medina. "Strawberry yield efficiency and its correlation with temperature and solar radiation." Horticultura Brasileira 31, no. 1 (2013): 93–99. http://dx.doi.org/10.1590/s0102-05362013000100015.

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The impact that future climatic conditions will have on agricultural productivity depends on the sensitivity to each environmental factor and relative changes in temperature, precipitation and UV-B radiation. The strawberry (Fragaria x ananassa) is a microclimatic crop cultivated almost worldwide and Spain is the world's second-largest strawberry producer after the USA. Strawberry production in Huelva has been affected by climate change in recent decades. Temperature and solar radiation are primary environmental factors controlling short-day strawberry plant growth and development. Temperature

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Ferraris, R., MJ Mahony, and JT Wood. "Effect of temperature and solar radiation on the development of dry matter and attributes of elephant grass (Pennisetum purpureum Schum.)." Australian Journal of Agricultural Research 37, no. 6 (1986): 621. http://dx.doi.org/10.1071/ar9860621.

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Nineteen accessions of elephant grass (Penniseturn purpureurn) were grown in a long-day photoperiod at 5/10, 18/13, 21/16, 27/22, 33/28 and 36/3l�C day/night temperatures during spring, summer and autumn in the Canberra phytotron. The temperature optimum for dry matter production was 33/28�C, and the magnitude of dry matter production was dependent on the solar radiation received; the low radiation levels in autumn reduced yields of advanced plants. Except at the lowest temperature, cumulative yield was associated with cumulative radiation. Rate of stem elongation was highest at 33/28�C under

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Atia, Hela, Adrian Ilinca, Ali Snoussi, Rachid Boukchina, and Ammar Ben Brahim. "Comparative Energetic and Exergetic Analysis of Conventional and Sloped Solar Chimney Power Plants." International Journal of Energy Optimization and Engineering 9, no. 4 (2020): 57–73. http://dx.doi.org/10.4018/ijeoe.2020100104.

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A CFD analysis using ANSYS Fluent software was conducted to study the effects of collector slope on solar chimney's performances. Three solar chimney configurations, named A, B, and C, which correspond, respectively, to an inclination angle of the collector roof of 0°, 2.5°, and 5°, were investigated. The results show that the thermodynamic performances of the solar chimney were improved by increasing the inclination angle of the collector roof. In fact, the power extracted from the sloped solar chimney power plants increases with increasing the inclination angle and the solar radiation intens

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Cowall, Seth T., Matthew J. Oliver, and L. Pamela Cook. "Effects of different levels of solar radiation and depth-varying vertical diffusion on the dynamics of a reaction–diffusion NPZ model." Journal of Plankton Research 41, no. 6 (2019): 879–92. http://dx.doi.org/10.1093/plankt/fbz058.

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ABSTRACT Although the effects of solar radiation, diffusion and mixed layer depths on plankton populations have been studied extensively, it is not intuitive what the equilibrium states of a plankton system should be in the absence of seasonal forcing, nor what are the prime determiners of the attracting equilibrium states. In this study, the linear stability of a nutrient–phytoplankton–zooplankton (NPZ) model in reaction–diffusion form is analyzed to understand how solar radiation, diffusion and mixed layer depth influence the predicted equilibrium states. We incorporate parameters that contr

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Retana-Cordero, Marlon, Sofia Flores, Rosanna Freyre, and Celina Gómez. "Strategies to Reduce Radiation Stress in Open-Field Ginger and Turmeric Production." Agronomy 12, no. 8 (2022): 1910. http://dx.doi.org/10.3390/agronomy12081910.

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Excess solar radiation can negatively affect growth and rhizome yield of ginger (Zingiber officinale) and turmeric (Curcuma longa) plants. Thus, the objective of this study was to evaluate the effect of 60% shade nets (Experiment 1) as well as white and red kaolin sprays during two production stages (early establishment vs. entire cycle) (Experiment 2) on field-grown ginger and turmeric plants. In Experiment 1, plants were propagated from seed rhizomes (R) or second-generation rhizomes from tissue-cultured plants (2GR), while only R were used in Experiment 2. There were no differences in rhizo

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