Yield of cotton cultivars under different irrigation depths in the Brazilian semi-arid region.

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dc.contributorJOAO HENRIQUE ZONTA, CNPA; JOSE RENATO CORTEZ BEZERRA, CNPA; VALDINEI SOFIATTI, CNPA; ZIANY NEIVA BRANDAO, CNPA.
dc.creatorZONTA, J. H.
dc.creatorBEZERRA, J. R. C.
dc.creatorSOFIATTI, V.
dc.creatorBRANDAO, Z. N.
dc.date2015-10-22T11:11:11Z
dc.date2015-10-22T11:11:11Z
dc.date2015-10-22
dc.date2015
dc.date2016-03-17T11:11:11Z
dc.date.accessioned2026-06-30T23:15:21Z
dc.descriptionThe objective of this study was to evaluate the effect of irrigation depths on seed cotton yield and water-use efficiency of cotton cultivars in the Brazilian semi-arid region. Field experiment was conducted during two consecutive years in the Apodi region, RN, using sprinkler irrigation. The experiment consisted of factorial combination in split-plots, composed of four irrigation depths (130; 100; 70 and 40% ETc and four cotton cultivars - FiberMax 993, BRS 286, BRS 336 and BRS 335), in randomized block design with 4 replicates. Data were evaluated by mean test (Tukey) and regression analysis. Considering the irrigation depths of 40% ETc, cotton yield was 48% lower compared to the higher irrigation depth (130% ETc). The higher water-use efficiency (0.69 kg m-3) was obtained with 70% ETc irrigation depth. The highest seed cotton yield was achieved with the higher water depth for all evaluated cultivars. Yield response factor (Ky) was equal to 0.632, 0.711, 0.784 and 0.858, for FiberMax 993, BRS 286, BRS 335 and BRS 336 cultivars, respectively. FiberMax 993 and BRS 286 cultivars presented the best performance, showing that they are more suitable for irrigated farming in the semi-arid region.
dc.identifierRevista Brasileira de Engenharia Agrícola e Ambiental, Campina Grande, PB, v. 19, n. 8, p.748-754, 2015.
dc.identifier1807-1929
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1027064
dc.identifier.urihttp://hdl.handle.net/123456789/377496
dc.languageeng
dc.rightsopenAccess
dc.subjectDéfict hídrico
dc.subjectGossypium hirsutum
dc.subjectEvapotranspiração
dc.subjectIrrigação por aspersão
dc.subjectAlgodão
dc.titleYield of cotton cultivars under different irrigation depths in the Brazilian semi-arid region.
dc.typeArtigo de periódico

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