Data/hora: 11/06/2024 08:02:10

Provedor de dados: | 90
País: | Brazil
Título: | Nitrogen and Potassium in Narrow-Row Cotton
Autores: | Kappes,Claudinei; Zancanaro,Leandro; Francisco,Eros Artur Bohac.
Data: | 2016-01-01
Ano: | 2016
Palavras-chave: | Gossypium hirsutum; Nitrogen; Potassium; Narrow-row cotton.
Resumo: | ABSTRACT Information on fertilizer management for cotton in narrow-row cropping system is scarce; therefore, studies are needed to improve nutrient stewardship for such systems. The aim of this study was to evaluate the effects of nitrogen and potassium application on yield and fiber quality of cotton under a narrow-row system. A field trial was carried out for three years, where the treatments were set up in an incomplete factorial arrangement [(4 × 4) + 1] under a randomized block design, with four N rates (20, 40, 60, and 80 kg ha-1), four K2O rates (0, 40, 80, and 120 kg ha-1), and one control (no N or K2O), for a total of 17 treatments, with four replicates. Urea and potassium chloride were applied on the soil surface 20 days after crop emergence. Varieties used were FMT 701 (2009/2010 and 2010/2011) and FMT 709 (2011/2012). Cotton yield and fiber quality parameters were measured. In the narrow-row cropping system, cotton lint yield was positively affected by N and K application. Cotton yield in relation to K applications was not dependent on N rates. Potassium application increased the micronaire index and fiber resistance, whereas high N rates reduced fiber resistance.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100512
Editor: | Sociedade Brasileira de Ciência do Solo
Relação: | 10.1590/18069657rbcs20150103
Formato: | text/html
Fonte: | Revista Brasileira de Ciência do Solo  v.40 2016
Fonte: | info:eu-repo/semantics/openAccess