SciELO - Scientific Electronic Library Online

 
vol.29 número3Potencial da região sul de Minas Gerais para a produção de cafés especiais (I - Atividade da polifenoloxidase, condutividade elétrica e lixiviação de potássio)Substratos no enraizamento de estacas herbáceas de figueira oriundas da desbrota 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 1413-7054versão On-line ISSN 1981-1829

Resumo

COSTA, Kátia Aparecida de Pinho et al. Dry mass production, nitrogen and sulfur efficiency and recovery by tanzania grass fertilized with nitrogen, potassium and sulfur. Ciênc. agrotec. [online]. 2005, vol.29, n.3, pp.598-603. ISSN 1413-7054.  https://doi.org/10.1590/S1413-70542005000300013.

The experiment was carried out in a Dark Red Latosol at Fazenda Modelo, Federal University of Goiás, in order to evaluate the effect of N:K rates with the use of S in the production of dry mass of Tanzania grass. Also, the efficiency of N and S conversion and recovery in dry mass were evaluated. Rates of 150, 300 and 450 kg/ha of N:K aditioning 20, 40 and 60 kg/ha of S were applied as broadcast covering. The experimental design was a randomized complete blocks in a 3x3 factorial with three replications. The forage evaluation period  was six months and the samples were collected at 30 cm-plant height.  The highest productions of dry mass of Tanzania grass were obtained with applications of greater N:K and S rates. The highest efficiencies of nitrogen and sulfur conversions were verified with applications of the lowest N:K and S rates, with no significant differences in concentration of these nutrients in the plant tissues as their rate of application increased. Higher S contensts in leaf tissue and relative recovery of N and S were observed by applying  450 kg/ha N:K and 60 kg/ha of S.

Palavras-chave : nutrient concentration; efficiency of N and S conversion; relative N and S recuperation; Panicum maximum.

        · 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