SciELO - Scientific Electronic Library Online

 
vol.35 número1Cultivo do tomateiro em substratos orgânicos sob aplicação foliar de silicato de potássio em ambiente protegidoAvaliação da atividade antifúngica do óleo essencial de Pittosporum undulatum L. em Aspergillus flavus e produção de aflatoxina índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

Compartilhar


Ciência e Agrotecnologia

versão impressa ISSN 1413-7054

Resumo

SORATTO, Rogério Peres; SILVA, Ângela Honório da; CARDOSO, Susiane de Moura  e  MENDONCA, Cristiane Gonçalves de. Rates and alternative sources of nitrogen fertilization on maize under no-tillage in sandy soil. Ciênc. agrotec. [online]. 2011, vol.35, n.1, pp.62-70. ISSN 1413-7054.  https://doi.org/10.1590/S1413-70542011000100007.

The objective of this work was to evaluate the effect of nitrogen sources and rates on maize nutrition and grain yield under no-tillage system in sandy soil. The experiment was conducted in a Typic Quartzipsamment, in the city of Cassilândia, State of Mato Grosso do Sul, Brazil. A completely randomized block design was used in a factorial array 3x4 with four replicates. Treatments consisted of three sources [urea, extruded urea with starch (Starea), and ammonium sulfonitrate with nitrification inhibitor of 3,4-dimethylpyrazole-phosphate (Entec® 26)] and four rates (0, 45, 90 and 180 kg ha-1) of nitrogen, applied in side-dressing when the plants presented four and six expanded leaves. The nitrogen source affected N, K, and S concentration in the leaf, but did not interfere in the components of production and maize grain yield. Nitrogen application like ammonium sulfonitrate promoted higher concentrations of N, K and S in the maize leaf in relation to the urea, especially in the larger rates studied. Side-dressing nitrogen fertilization increased the number of ears per plant, number of grains per ear and grain yield, grown under no-tillage system in sandy soil, independent of the used source.

Palavras-chave : Zea mays L.; nitrogen fertilization; urea; sulfonitrate; dimethylpyrazole-phosphate; extruded urea.

        · resumo em Português     · texto em Português     · Português ( pdf )

 

Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons