scholarly journals Solar Radiation Effect on Crop Production

10.5772/34796 ◽  
2012 ◽  
Author(s):  
Carlos Campillo ◽  
Rafael Fortes ◽  
Maria del Henar Prieto
Keyword(s):  
Solar Radiation ◽  
Crop Production ◽  
Radiation Effect

scholarly journals Semi-Transparent Organic Photovoltaics Applied as Greenhouse Shade for Spring and Summer Tomato Production in Arid Climate

Agronomy ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1152
Author(s):  
Rebekah Waller ◽  
Murat Kacira ◽  
Esther Magadley ◽  
Meir Teitel ◽  
Ibrahim Yehia
Keyword(s):  
Solar Radiation ◽  
Organic Photovoltaics ◽  
Crop Production ◽  
Production Systems ◽  
High Light ◽  
Growth And Yield ◽  
Control Group ◽  
Tomato Crop ◽  
Tomato Production ◽  
Control Section

Recognizing the growing interest in the application of organic photovoltaics (OPVs) with greenhouse crop production systems, in this study we used flexible, roll-to-roll printed, semi-transparent OPV arrays as a roof shade for a greenhouse hydroponic tomato production system during a spring and summer production season in the arid southwestern U.S. The wavelength-selective OPV arrays were installed in a contiguous area on a section of the greenhouse roof, decreasing the transmittance of all solar radiation wavelengths and photosynthetically active radiation (PAR) wavelengths (400–700 nm) to the OPV-shaded area by approximately 40% and 37%, respectively. Microclimate conditions and tomato crop growth and yield parameters were measured in both the OPV-shaded (‘OPV’) and non-OPV-shaded (‘Control’) sections of the greenhouse. The OPV shade stabilized the canopy temperature during midday periods with the highest solar radiation intensities, performing the function of a conventional shading method. Although delayed fruit development and ripening in the OPV section resulted in lower total yields compared to the Control section (24.6 kg m−2 and 27.7 kg m−2, respectively), after the fourth (of 10 total) harvests, the average weekly yield, fruit number, and fruit mass were not significantly different between the treatment (OPV-shaded) and control group. Light use efficiency (LUE), defined as the ratio of total fruit yield to accumulated PAR received by the plant canopy, was nearly twice as high as the Control section, with 21.4 g of fruit per mole of PAR for plants in the OPV-covered section compared to 10.1 g in the Control section. Overall, this study demonstrated that the use of semi-transparent OPVs as a seasonal shade element for greenhouse production in a high-light region is feasible. However, a higher transmission of PAR and greater OPV device efficiency and durability could make OPV shades more economically viable, providing a desirable solution for co-located greenhouse crop production and renewable energy generation in hot and high-light intensity regions.

scholarly journals Solar radiation effect on the complexation capacity of aquatic humic substances with metals

2012 ◽  
Vol 23 (10) ◽  
pp. 1871-1879 ◽  
Author(s):  
Camila A. Melo ◽  
Ana L. De Toffoli ◽  
Altair B. Moreira ◽  
Márcia C. Bisinoti
Keyword(s):  
Solar Radiation ◽  
Humic Substances ◽  
Radiation Effect ◽  
Aquatic Humic Substances ◽  
Complexation Capacity

scholarly journals Importance of air pressure in the compensation for the solar radiation effect on temperature sensors of radiosondes

2016 ◽  
Vol 23 (4) ◽  
pp. 691-697 ◽  
Author(s):  
Sang-Wook Lee ◽  
Byung Il Choi ◽  
Jong Chul Kim ◽  
Sang-Bong Woo ◽  
Seongchong Park ◽  
...  
Keyword(s):  
Solar Radiation ◽  
Radiation Effect ◽  
Temperature Sensors ◽  
Air Pressure

Solar Radiation Distribution Method for a Photovoltaic Greenhouse based on the Maximization of Annual Economic Benefits

2021 ◽  
Author(s):  
Yi Wang ◽  
Tiejun Zhou ◽  
Weiji Zhou
Keyword(s):  
Mathematical Model ◽  
Power Generation ◽  
Solar Radiation ◽  
Agricultural Production ◽  
Crop Production ◽  
Economic Benefits ◽  
Distribution Method ◽  
Greenhouse Crops ◽  
Photovoltaic Power ◽  
Radiation Distribution

Abstract A solar radiation distribution method is proposed based on the maximization of economic benefits for photovoltaic power generation and agricultural production in a photovoltaic greenhouse to solve the problem of low overall economic benefits because of an unreasonable solar radiation distribution between photovoltaic power generation and agricultural production in the photovoltaic greenhouse. First, a mathematical model of the solar radiation yield of photovoltaic greenhouse crops is proposed based on a rectangular hyperbolic modified light response model of crops to represent the relationship between solar radiation energy and crop production. Second, a mathematical model of the average annual revenue of a photovoltaic greenhouse is established to determine the maximum annual economic benefit of the photovoltaic greenhouse, and the model is constrained by the requirements of the light intensity of photovoltaic power generation and environmental conditions for the growth of greenhouse crops. Finally, the correctness of the model is verified by actual operation data of a photovoltaic greenhouse in Xinjiang, and the optimal solar radiation distribution proportion is calculated. This study provides theoretical support for the design of photovoltaic greenhouses.

scholarly journals “Reduction of the level of the radiation effect on space SA photoconverters with the use of solar radiation concentrators”

2008 ◽  
Vol 44 (4) ◽  
pp. 302-302
Author(s):  
V. A. Grilikhes ◽  
A. A. Soluyanov ◽  
O. I. Chosta ◽  
M. Z. Shvarts
Keyword(s):  
Solar Radiation ◽  
Radiation Effect

Interaction of Temperature and Solar Radiation Effect Sorghum Growth Under Drip Irrigated Saline Water

2007 ◽  
Vol 6 (2) ◽  
pp. 359-363
Author(s):  
Bouya Ahmed Ould Ahmed ◽  
Tahei Yamamoto ◽  
Mitsuhiro Inoue
Keyword(s):  
Solar Radiation ◽  
Radiation Effect ◽  
Saline Water

Climate and the efficiency of crop production in Britain

1977 ◽  
Vol 281 (980) ◽  
pp. 277-294 ◽  
Keyword(s):  
Solar Radiation ◽  
Water Supply ◽  
Crop Production ◽  
Energy Output ◽  
Total Production ◽  
Strongly Correlated ◽  
Arable Crops ◽  
Development Phases ◽  
Intercepted Radiation ◽  
Duration Of Development

The efficiency of crop production is defined in thermodynamic terms as the ratio of energy output (carbohydrate) to energy input (solar radiation). Temperature and water supply are the main climatic constraints on efficiency. Over most of Britain, the radiation and thermal climates are uniform and rainfall is the main discriminant of yield between regions. Total production of dry matter by barley, potatoes, sugar beet, and apples is strongly correlated with intercepted radiation and these crops form carbohydrate at about 1.4 g per MJ solar energy, equivalent to 2.4% efficiency. Crop growth in Britain may therefore be analysed in terms of ( a ) the amount of light intercepted during the growing season and ( b ) the efficiency with which intercepted light is used. The amount intercepted depends on the seasonal distribution of leaf area which, in turn, depends on temperature and soil water supply. These variables are discussed in terms of the rate and duration of development phases. A factorial analysis of efficiency shows that the major arable crops in Britain intercept only about 40 % of annual solar radiation and their efficiency for supplying energy through economic yield is only about 0.3%. Some of the factors responsible for this figure are well understood and some are immutable. More work is needed to identify the factors responsible for the large differences between average commercial and record yields.

Sign in / Sign up

Export Citation Format

Share Document