EFFECT OF IRRIGATION ON YIELD AND FIBER QUALITY IN COTTON CULTIVARS

Authors

  • João Henrique Zonta Embrapa Algodão, Caixa Postal 174, 58428-095, Campina Grande (PB).
  • José Renato Cortez Bezerra Embrapa Algodão, Caixa Postal 174, 58428-095, Campina Grande (PB).
  • Valdinei Sofiatti Embrapa Algodão, Caixa Postal 174, 58428-095, Campina Grande (PB).
  • Francisco José Correia Farias Embrapa Algodão, Caixa Postal 174, 58428-095, Campina Grande (PB).
  • Luiz Paulo de Carvalho Embrapa Algodão, Caixa Postal 174, 58428-095, Campina Grande (PB).

DOI:

https://doi.org/10.1590/1983-21252015v28n405rc

Keywords:

Water deficit. Cotton. Semiarid.

Abstract

This study was conducted to evaluate seed cotton yield, fiber yield, and fiber quality traits of cotton cultivars grown under different irrigation levels in Brazil. The experiment was conducted over two years in the region of Apodi – RN, with sprinkler irrigation. Treatments comprised of 4 irrigation levels i.e., 130, 100, 70 and 40 % of the crop evapotranspiration (ETc) and 4 cotton cultivars i.e., FiberMax 993, BRS 286, BRS 336 and BRS 335. The experimental design was factorial with randomized complete block design and four replicates. Yield, lint percent and fiber quality traits determined were evaluated. Different responses were observed for cultivars at various irrigation levels. Cultivars grown under limited irrigation exhibited a decline in the seed cotton yield, lint percent, and fiber quality. Cultivars with the highest yield and lint percent were FiberMax 993 and BRS 286. Within irrigation level of 40 % ETc, the medium fiber cultivars produced short fibers whereas the long fiber cultivar, BRS 336, produced medium fiber length. Overall, the different levels of water deficits did not significantly affect fiber quality of the four cultivars tested as all fiber quality traits remained acceptable for the domestic textile industry.

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Author Biographies

João Henrique Zonta, Embrapa Algodão, Caixa Postal 174, 58428-095, Campina Grande (PB).

Pesquisador na área de Recursos Hídricos e Ambientais

José Renato Cortez Bezerra, Embrapa Algodão, Caixa Postal 174, 58428-095, Campina Grande (PB).

Pesquisador na área de Recursos Hídricos e Ambientais

Valdinei Sofiatti, Embrapa Algodão, Caixa Postal 174, 58428-095, Campina Grande (PB).

Pesquisador na área de fitotecnia

Francisco José Correia Farias, Embrapa Algodão, Caixa Postal 174, 58428-095, Campina Grande (PB).

Pesquisador na área de genética e melhoramento de plantas

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Published

18-11-2015

Issue

Section

Agronomy