Effects of cover optical properties on screenhouse radiative environment and sweet pepper productivity

Kitta, E.; Baille, Alain; Katsoulas, Ν.; Rigakis, N.; González-Real, M.M.

doi:10.1016/j.biosystemseng.2014.04.001

Cited by 32 publications

(24 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The diameter, length and average fruit weight was equal (Kruskal-Wallis, α≤ 0.05) between tunnels of clear polycarbonate, high density polyethylene and blue polycarbonate ( Figure 4). Similar results were reported by Kitta et al (2014) in a chili pepper crop (Capsicum annuum L.) under different color meshes (pearl, green and white) with 78, 62 and 59% of PAR radiation transmittance respectively. The pearl colored mesh that showed the highest transmittance was the one of greater fruit yield, and dry matter.…”

Section: Fruit Yieldsupporting

confidence: 75%

Características de la cubierta de un túnel efecto en radiación, clorofila y rendimiento de calabacita

Ángel-Hernández¹,

Zermeño-González²,

Melendres-Alvarez³

et al. 2017

Remexca

View full text Add to dashboard Cite

Debido que la agricultura bajo cubiertas plásticas es una alternativa para mejorar la producción de cultivos hortícolas, el objetivo de este estudio fue evaluar el efecto de cuatro tipos de cubiertas de túneles de diferentes materiales y colores en la transmitancia de la radiación y su relación con contenido de clorofila, crecimiento y rendimiento de un cultivo de calabacita (Cucurbita pepo) cv. Zucchini. El estudio se realizó durante el ciclo de producción otoño-invierno 2015 a 2016, en Sabinas Hidalgo, Nuevo León. Los materiales utilizados fueron tres túneles con láminas de policarbonato de color rojo, azul y claro respectivamente, y otro con una cubierta de polietileno de alta densidad. Dentro de cada túnel se registró la radiación solar y la fotosintéticamente activa. También se obtuvo el contenido de clorofila de las hojas de las plantas. Los resultados mostraron que, para la banda de la radiación PAR, el policarbonato de color rojo tuvo la menor transmitancia (23.51%), seguido por el de color azul (57.46%), el polietileno de alta densidad (60.51%) y el de mayor transmitancia fue el policarbonato de color claro (82.57%). Las plantas que crecieron bajo el túnel con el policarbonato de color claro tuvieron mayor contenido de clorofila, mayor desarrollo foliar y rendimiento de fruto. Por el contrario, las plantas en el túnel de policarbonato rojo que recibieron la menor cantidad de radiación PAR, tuvieron el menor contenido de clorofila, menor desarrollo foliar y sin rendimiento de frutos.

show abstract

Section: Fruit Yieldsupporting

confidence: 75%

Características de la cubierta de un túnel efecto en radiación, clorofila y rendimiento de calabacita

Ángel-Hernández¹,

Zermeño-González²,

Melendres-Alvarez³

et al. 2017

Remexca

View full text Add to dashboard Cite

show abstract

“…The application of photo-selective netting technology is gaining popularity around the world, especially in Mediterranean countries (BASILE et al, 2008;FALLIK et al, 2009;GOREN et al, 2011;BASTÍAS et al, 2012;KONG et al, 2013;KITTA et al, 2014), but also in other countries such as Serbia (MILENKOVIĆ et al, 2012;ILIĆ et al, 2015), Hungary (OMBÓDI et al, 2015, South Africa (SELAHLE et al, 2014;MASHABELA et al, 2015), Brazil (SANTANA et al, 2012OLIVEIRA et al, 2016), and Mexico (AYALA-TAFOYA et al, 2011;MARTÍNEZ-GUTIÉRREZ et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Sunlight transmitted by colored shade nets on photosynthesis and yield of cucumber

et al. 2018

View full text Add to dashboard Cite

Black shading nets are widely used in the protected cultivation of vegetables as a technique for controlling light and temperature, while the colored shading nets, with special optical properties to improve the use of solar radiation, appeared recently in the agricultural plastics market. Light quality transmitted by gray, aluminized, pearl, blue, red and black (control) nets with 30% shade was evaluated, as well as its effects on photosynthetic properties and fruits production of cucumber plants. Treatments (shade nets) were established under a randomized complete block design with four repetitions. The red net transmitted 23.7 and 40.3% more photosynthetic photon flux density (400 to 700nm) and red light (600 to 700nm) and the blue net transmitted 36% more blue light (400 to 500nm) in comparison with the respective transmissions of black net. All nets increased the photosynthetic responses: transpiration, stomatal conductance and CO2 assimilation, observed in plants grown under black net. Leaf greenness (41.6 SPAD units) and foliar area (90dm2) increased 22.8 and 38.9% with the red net, while the dry weight of leaf (52.5g) increased 21.9% with pearl net. Pearl, red, aluminized and blue nets showed to be viable alternatives because the production of fruit increased in 71, 48, 46 and 46%, respectively, in comparison with the conventional black net (52t ha-1).

show abstract

“…Kitta et al [25] recommended a shading factor no higher than 20% for sweet pepper in Mediterranean climate conditions. Different types of materials and technical solutions have been proposed to integrate the solar based energy generation systems into greenhouses, from conventional opaque flat hard or planar flexible PV modules with different type of arrangements (straightline and checkerboard) to semitransparent PV modules [23,35,38,39,42,45,46].…”

Section: Introduction and Objectivesmentioning

confidence: 99%

Feasibility analysis of a standalone direct pumping photovoltaic system for irrigation in Mediterranean greenhouses

et al. 2016

View full text Add to dashboard Cite

a b s t r a c tThe profitability of photovoltaic (PV) systems for irrigating Mediterranean greenhouse crops is analyzed. A standalone direct pumping PV system is proposed. A simulation model of the system was developed in order to obtain the economically optimal design of this system and evaluate its feasibility. The model is composed of several submodels: the photovoltaic power generation capacity submodel, the direct pumping management submodel and the submodel that evaluates the irrigation water requirements for a representative greenhouse and the overall economic performance of the system.The effect of the total number of irrigation sectors per hectare on the performance of the system has been analyzed. Two management strategies have been considered: to irrigate with only one irrigation sector simultaneously or to irrigate with a variable number of irrigation sectors as a function of the incoming power provided by the PV array. The optimal operation strategy provided by the model was the first one as the second was penalized by the higher cost of the pumps. The system becomes profitable for at least 4 sectors per hectare. The profitability and energy use efficiency of this type of systems are relatively low, although these values could be improved if the excess of energy were used for other purposes, such as ventilating or cooling the greenhouse.

show abstract

Effects of cover optical properties on screenhouse radiative environment and sweet pepper productivity

Cited by 32 publications

References 56 publications

Características de la cubierta de un túnel efecto en radiación, clorofila y rendimiento de calabacita

Características de la cubierta de un túnel efecto en radiación, clorofila y rendimiento de calabacita

Sunlight transmitted by colored shade nets on photosynthesis and yield of cucumber

Feasibility analysis of a standalone direct pumping photovoltaic system for irrigation in Mediterranean greenhouses

Contact Info

Product

Resources

About