Response of perennial cotton to different fertilizer application times under oligotrophic environment
In order to investigate the influence of inorganic fertilization with macronutrients, fractionation of potassium, and late application of nitrogen (40 or 80 days after emergence) on perennial cotton (Gossypium hirsutum L. var. marie galante Hutch.), an experiment was carried out in a noncalcic, vertic Brown soil, in Caicó, RN, Brazil. Fertilizers were only applied during the first year and their residual effects during the second year were observed in growth rate, cotton yield and technological quality of the fiber. Results showed that fertilizer application increased yields by more than 500% in the first year and 400% in the second year. The phosphorus and potassium applied remained in the soil in elevated amounts after two years. The fertilization did not alter the technological characteristics of the fiber.
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| Format: | Digital revista |
| Language: | por |
| Published: |
Pesquisa Agropecuaria Brasileira
2014
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| Online Access: | https://seer.sct.embrapa.br/index.php/pab/article/view/15270 |
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