Onion yield as a function of nitrogen dose

• Main Author: Rodrigues,Gardênia S. de O.
• Publication Date: 2018
• Other Authors: Grangeiro,Leilson C., Lima,Jailma S.S. de, Chaves,Aridênia P., Bezerra Neto,Francisco, Medeiros,José F., Novo Júnior,José
• Format: Article
• Language: eng
• Source: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
• Download full: http://scielo.pt/scielo.php?script=sci_arttext&pid=S0871-018X2018000100006
• topic: Allium cepa; plant nutrition; nitrogen; production cost

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.