Performance of Lettuce Cultivars under Different Production Environments
Pedro Henrique Máximo de Souza Carvalho *
Department of Agricultural Engineering, Federal Rural University of Pernambuco, Recife, Pernambuco, Brazil.
Gertrudes Macário de Oliveira
Department of Technology and Social Sciences, State University of Bahia, Juazeiro, Bahia, Brazil.
Ruy de Carvalho Rocha
Department of Technology and Social Sciences, State University of Bahia, Juazeiro, Bahia, Brazil.
Josineide Ednalva Pereira
Department of Technology and Social Sciences, State University of Bahia, Juazeiro, Bahia, Brazil.
Tatiane dos Santos Carvalho
Department of Technology and Social Sciences, State University of Bahia, Juazeiro, Bahia, Brazil.
Ana Lívia Lopes de Vasconcelos Pereira
Department of Technology and Social Sciences, State University of Bahia, Juazeiro, Bahia, Brazil.
*Author to whom correspondence should be addressed.
Abstract
Lettuce is a crop with high commercial and social importance, reaching from the macro to the Brazilian micro producer. The objective of this study was to evaluate the agronomic performance of Elba and Rouge lettuce cultivars in terms of development and production, under different environments, for the edaphoclimatic conditions of Juazeiro, Bahia. The experimental design adopted was completely randomized, in a split plot scheme, with two production environments (shaded environment and full sun) in the plots, and two lettuce cultivars (Crespa, CV. 1 Elba and Roxa, CV. 2 Rouge) in the subplots. The variables analyzed were: plant height, plant diameter, average fresh weight, average dry weight, total productivity and water use efficiency. The cultivation system in a protected environment showed better development and high productivity for the two lettuce cultivars, when compared to the system in full sun. Cultivar 1 showed superior performance to cultivar 2, in all variables analyzed, in both cultivation systems.
Keywords: Lactuca sativa L., protected cultivation, water, open field