Data/hora: 17/06/2024 10:36:09

Biblioteca(s): 	Embrapa Algodão.	
Data corrente: 	20/12/2017	
Data da última atualização: 	20/12/2017	
Autoria: 	ZONTA, J. H.; BRANDAO, Z. N.; RODRIGUES, J. I. da S.; SOFIATTI, V.	
Afiliação: 	JOAO HENRIQUE ZONTA, CNPA; ZIANY NEIVA BRANDAO, CNPA; JOSIANE ISABELA DA SILVA RODRIGUES, CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO; VALDINEI SOFIATTI, CNPA.	
Título: 	Cotton response to water deficits at different growth stages.	
Ano de publicação: 	2017	
Fonte/Imprenta: 	Revista Caatinga, Mossoró, v. 30, n. 4, p. 980-990, out./dez., 2017.	
Idioma: 	Inglês	
Conteúdo: 	Water deficit at certain cotton growth stages can cause severe damage to crop development, affecting physiological processes and reducing reproductive structures, with consequent yield losses. The objective of this study was to evaluate the response of cotton cultivars under water deficit applied at different stages of the crop cycle. We compared the number of bolls per meter, cotton yield, and water use efficiency for eight different cotton cultivars under a water deficit of 15 days. We selected the following growth stages: Emergence (EM), First Square (FS), First Flower (FL), Peak Bloom (PB), and First Open Boll (FOB). The control treatment was irrigated with 100% ETc. The experiment was conducted in Apodi, RN State of Brazil, semiarid region, using a sprinkler irrigation system. The number of bolls per meter, cotton yield, and water use efficiency were influenced by the interaction of cultivars x deficit periods. Lowest values were observed for water suppression in the FL and PB stages. When the water deficit was imposed in the initial stages of growth (EM to FS) or after the FOB stage, the cotton yield reduction was not significant. At the same stage and water deficit, the behavior of the different cultivars was similar. Producers are urged to take this information into account when developing irrigation schemes for cotton crops, thereby avoiding water deficits during the most critical periods of the crop cycle.	
Thesagro: 	Água; Algodão; Botão floral; Irrigação; Produtividade.	
Thesaurus Nal: 	Cotton; Irrigation.	
Categoria do assunto: 	--	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/169436/1/Cotton-response-to....pdf	
Registro original: 	Embrapa Algodão (CNPA)	
Exemplares: 	CNPA - (28430-1) - UPC - AP - DD -  -  -  - DIS