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Revista de Ciências Agrárias

Print version ISSN 0871-018X

Abstract

RODRIGUES, Gardênia S. de O. et al. Onion yield as a function of nitrogen dose. Rev. de Ciências Agrárias [online]. 2018, vol.41, n.1, pp.41-50. ISSN 0871-018X.  https://doi.org/10.19084/RCA17154.

Nitrogen (N) is the second most required nutrient by onion (Allium cepa L.); however, crop response to N fertilization depends on the applied dose. This study aimed to evaluate the effects of different N doses on onion bulb yield. The experiments were conducted during the period December 2011 to April 2012, with a second from August to December 2012, in a randomized block design with four replications. The treatments were six N doses: 0, 34, 67, 101, 134 and 168 kg ha-1. It may be concluded that the productive components of the onion were affected by N fertilization. The application of 67 kg ha-1 N, regardless of planting time, provided the maximum economic return for the onion crop.

Keywords : Allium cepa; plant nutrition; nitrogen; production cost.

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