Data/hora: 05/06/2024 12:40:12

Provedor de dados: 	65	
País: 	Brazil	
Título: 	Sunlight transmitted by colored shade nets on photosynthesis and yield of cucumber	
Autores: 	Tafoya,Felipe Ayala; Juárez,Moisés Gilberto Yáñez; Orona,Carlos Alfonso López; López,Raymundo Medina; Alcaraz,Teresa de Jesús Velázquez; Valdés,Tomás Díaz.	
Data: 	2018-01-01	
Ano: 	2018	
Palavras-chave: 	Cucumis sativus L.; Light transmission; Photosynthetic responses; Leaf growth; Fruit production.	
Resumo: 	ABSTRACT:  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).	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000900200	
Editor: 	Universidade Federal de Santa Maria	
Relação: 	10.1590/0103-8478cr20170829	
Formato: 	text/html	
Fonte: 	Ciência Rural  v.48 n.9 2018	
Fonte: 	info:eu-repo/semantics/openAccess