Phytotechnical characteristics of common bean under different nitrogen levels during seeding and sidedressing in the rainy season in Northern Minas Gerais
DOI:
https://doi.org/10.5433/1679-0359.2013v34n6Supl1p3635Palavras-chave:
Phaseolus vulgaris L, 100-grain weight, Yield.Resumo
Few studies have focused on the appropriate management of nitrogen (N) levels at the seeding and sidedressing phases to increase the grain yield of common bean in the semiarid region of Brazil, despite the high demand for N by the bean crop. The present study aimed to evaluate the agronomic characteristics of common bean grown during the rainy season following fertilization with different N levels at seeding and sidedressing. A 4x4 factorial structure was used, corresponding to four N levels at seeding (0, 40, 80 and 120 kg ha-1) and four N levels at sidedressing (0, 40, 80 and 120 kg ha-1). The experimental design consisted of randomized blocks with three replicates. The study was conducted in a dystrophic Red Latosol under conventional soil tillage. The ‘Pérola’ cultivar was sown in plots formed of six rows (each 5 m long), spaced 0.5 m apart, using the four central rows, totaling 10 m2 of useful area. The following parameters were evaluated: final stand, number of pods per plant, number of grains per pod, 100-grain weight and yield. The N levels at seeding increased the number of pods per plant, and sidedressing fertilization using 83.33 kg ha-1 N yielded the highest 100-grain weight. The maximum yield (MTE; 3.092 kg ha-1) was found when using 62.4 kg ha-1 N at seeding and 61.9 kg ha-1 N at sidedressing, and the maximum economic efficiency (MEE) was found when using 60.3 kg ha-1 N at seeding and 59.5 kg ha-1 N at sidedressing, indicating the need for split N fertilization of common bean during the rainy season in the northern region of Minas Gerais State.
Downloads
Downloads
Publicado
Como Citar
Edição
Seção
Licença
Semina: Ciências Agrárias adota para suas publicações a licença CC-BY-NC, sendo os direitos autorais do autor, em casos de republicação recomendamos aos autores a indicação de primeira publicação nesta revista.
Esta licença permite copiar e redistribuir o material em qualquer meio ou formato, remixar, transformar e desenvolver o material, desde que não seja para fins comerciais. E deve-se atribuir o devido crédito ao criador.
As opiniões emitidas pelos autores dos artigos são de sua exclusiva responsabilidade.
A revista se reserva o direito de efetuar, nos originais, alterações de ordem normativa, ortográfica e gramatical, com vistas a manter o padrão culto da língua e a credibilidade do veículo. Respeitará, no entanto, o estilo de escrever dos autores. Alterações, correções ou sugestões de ordem conceitual serão encaminhadas aos autores, quando necessário.
