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- Title
ESTRATÉGIAS DE MANEJO DO DÉFICIT HÍDRICO EM FASES FENOLÓGICAS DO ALGODOEIRO COLORIDO.
- Authors
DOS ANJOS SOARES, LAURIANE ALMEIDA; MENDES DIAS, KAROLINE MARIA; MACHADO NASCIMENTO, HEMILE; SOARES DE LIMA, GEOVANI; ALVES DE OLIVEIRA, KELDER JOSÉ; SOARES DA SILVA, SAULO
- Abstract
Water scarcity is a limiting factor for irrigated agriculture, mainly in some phases of cotton, affecting physiological processes and consequently productivity. In this context, this work aimed to evaluate the phytomass and production components of colored cotton genotypes under water deficit in different phenological phases of the plant. The plants were conducted in lysimeters under field conditions, at the Center for Science and Agrifood Technology belonging to the Federal University of Campina Grande, in the city of Pombal-PB. The design used was in a randomized block in a 3 x 3 factorial scheme, with three colored fiber cotton genotypes (BRS Rubi, BRS Topázio and BRS Safira) irrigated under water deficit during the three stages of crop development (vegetative, flowering and fruiting). The root/shoot ratio is more sensitive to the effects of water deficit during flowering and boll formation. Among the genotypes, BRS Topázio is the most tolerant to water deficit (40% of ETr) during the vegetative phase for the number of total seeds. The water deficit in the fruiting stage of colored cotton can be used in the cultivation of cotton with the lowest losses in the weight of 100 seeds.
- Publication
Revista IRRIGA - Brazilian Journal of Irrigation & Drainage, 2020, Vol 25, Issue 4, p656
- ISSN
1413-7895
- Publication type
Article
- DOI
10.15809/irriga.2020v25n4p656-662