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- Title
Características produtivas do trigo em função de fontes e doses de nitrogênio.
- Authors
Prando, Andre Mateus; Zucareli, Claudemir; Fronza, Vanoli; de Oliveira, Fábio Álvares; Júnior, Adilson Oliveira
- Abstract
Nitrogen fertilization is an important management practice in grasses and quite complex, due to several factors which influence it, such as climatic conditions, cropping systems and available levels and sources. This study aimed at evaluating the effect of topdressing nitrogen (N) sources and levels on the productive characteristics of wheat (Triticum aestivum L.) grown after soybean, under no-till system. The experiment was conducted in an Oxisol, in Londrina, Paraná State, Brazil. The experimental design was randomized blocks, in a 3x4 factorial scheme, with four replications. As topdressing N sources, urea, urea + urease inhibitor (NBPT) and polymer-coated urea were evaluated, in 2008, and urea, urea + urease inhibitor (NBPT) and ammonium sulfate, in 2009, in four doses (0.0 kg ha-1, 40.0 kg ha-1, 80.0 kg ha-1 and 120.0 kg ha-1 of N) applied 20 days after emergence. Plant height, lodging percentage, mass of 1,000 grains, grain yield and hectoliter mass were determined, and results showed that increased topdressing N levels promoted plants lodging, decreasing the mass of 1,000 grains, yield and hectoliter mass. The N sources did not affect the yield of the BRS Pardela cultivar grown after soybean.
- Subjects
NITROGEN fertilizers; CROPPING systems; WHEAT; OXISOLS; UREA as fertilizer
- Publication
Agricultural Research in the Tropics / Pesquisa Agropecuária Tropical, 2013, Vol 43, Issue 1, p34
- ISSN
1517-6398
- Publication type
Article
- DOI
10.1590/S1983-40632013000100009