WHEAT NITROGEN FERTILIZATION UNDER NO TILL ON THE LOW ALTITUDE BRAZILIAN CERRADO

Autor(es)

Minhoto Teixeira Filho, Marcelo Carvalho ^[1] ; Buzetti, Salatier ^[1] ; Andreotti, Marcelo ^[1] ; Sabin Benett, Cleiton Gredson ^[2] ; Arf, Orivaldo ^[3] ; de Sa, Marco Eustaquio ^[3]

Afiliação do(s) autor(es)

^[1] UNESP Univ Estadual Paulista, Dept Rural Engn Plant Hlth & Soils, BR-15385000 Sao Paulo - Brazil

^[2] UEMS Univ Estadual Mato Grosso do Sul, Dept Agron, Unidade Univ Aquidauana, Aquidauana - Brazil

^[3] UNESP Univ Estadual Paulista, Dept Fitotecnia Food Technol & Socioecon, BR-15385000 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF PLANT NUTRITION; v. 37, n. 11, p. 1732-1748, 2014.
• Citações Web of Science: 8

Resumo

This study evaluates the effects of different nitrogen (N) rates (0, 50, 100, 150, and 200 kg ha(-1)) and sources (ammonium sulfate, urea, and ammonium sulfonitrate with a nitrification inhibitor, Entec (R)) applied either as a single application during sowing (next to the planting rows) or as side dressing (stage 3.2 on Zadok scale), on production components and grain yield of irrigated wheat grown under no-till in a low-elevation Brazilian cerrado and Dark Red Dystrophic Latosol with clayey-texture. It was adopted a randomized block design (5 x 3 x 2) in factorial scheme with four replications. The N sources provided similar grain yields and chlorophyll contents. Increased nitrogen rates increased grain yield up to the 120 kg N ha(-1), regardless of application time and N source. Nitrogen fertilization as side dressing can be recommended based on leaf chlorophyll readings. Early application of all nitrogen fertilizers at sowing time was viable. (AU)

• Processo FAPESP: 06/04277-3 - Fontes, épocas de aplicação e doses de nitrogênio nas culturas do arroz, feijão, milho, trigo e pastagem em condições de Cerrado
• Beneficiário: Salatier Buzetti
• Modalidade de apoio: Auxílio à Pesquisa - Regular