Características agronômicas de cultivares de sorgo (Sorghum bicolor (L.) Moench) sob três doses de nitrogênio
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Data
2005-04
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Editor
João Batista Duarte
Resumo
The objective of this study was to evaluate characteristics of four forage sorghum cultivars at three levels of nitrogen fertilizer in an Oxisoil. A randomized complete block design in a 4x3 factorial scheme (CMSXS 762, BRS 610, BR 700 and BR 506 hybrid cultivars combined with 50 kg.ha-1, 75 kg.ha-1 and 100 kg.ha-1 nitrogen levels). A Tukey test was used for comparison of treatment means. The yields of natural matter, with general average 59.31 t.ha-1, were significantly different among sorghum cultivars; but there was no difference caused by nitrogen levels in this trait. The dry matter yield mean (15.17 t.ha-1) did not differ among cultivars or nitrogen levels. As opposed, dry matter and panicle and stalk contents in the natural matter were different among cultivars as well as among N levels. The plant height (with general average 2.39 m) and stalk dry matter means were different only among cultivars. BR 700 and CMSXS 762 cultivars showed the best panicle/stalk/leaf ratio and the largest panicle percentage. Increased amounts of nitrogen resulted in increased panicle and decreased stalk percentage.
Descrição
Palavras-chave
Sorgo, Adubação nitrogenada, Avaliação agronômica, Sorghum, Nitrogen fertilization, Agronomic evaluation
Citação
OLIVEIRA, Regis de Paula; FRANÇA, Aldi Fernandes de Souza; RODRIGUES FILHO, Osvaldo; OLIVEIRA, Euclides Reuter de; ROSA, Beneval; SOARES, Tatiana Vieira; MELLO, Susana Queiroz Santos. Características agronômicas de cultivares de sorgo (Sorghum bicolor (L.) Moench) sob três doses de nitrogênio. Pesquisa Agropecuária Tropical, Goiânia, v. 35, n. 1, p. 55-64, jan./abr. 2005. Disponível em: <https://www.revistas.ufg.br/pat/article/view/2288>.