SciELO - Scientific Electronic Library Online

 
vol.35 número1Duración del calabacín con la aplicación de ácido glutámicoEl queso de Tafí del Valle y el despertar de la cultura del queso en Argentina índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

  • Em processo de indexaçãoCitado por Google
  • Não possue artigos similaresSimilares em SciELO
  • Em processo de indexaçãoSimilares em Google

Compartilhar


Idesia (Arica)

versão On-line ISSN 0718-3429

Resumo

MOHAMED, Elsaid M.E; WATTHIER, Maristela; ZANUNCIO, José C  e  SANTOS, Ricardo H.S. Dry matter accumulation and potato productivity with green manure. Idesia [online]. 2017, vol.35, n.1, pp.79-86. ISSN 0718-3429.  http://dx.doi.org/10.4067/S0718-34292017005000016.

Growth patterns and distribution of dry matter in different parts of potato plants (Solanum tuberosum, Solanaceae) with green manure can be positively influenced by the use of green manure. The aim was to evaluate the dry matter accumulation and pro-ductivity of potato with varying quantities of sunn hemp, Crotalaria juncea (Fabaceae) as a nitrogen source. The experiment used three different amounts of sunn hemp, equivalent to 100, 200 and 400 Kg ha-1 nitrogen (N), the recommended mineral N dose (250 Kg ha-1), and a treatment with zero N. Sampling was carried out at 35, 50, 65 and 80 days after planting, representing the subplots. The treatments were arranged in a randomized block design with split plot, the plot were enlarged fertilization and the small plot sampling dates. Four replications were used. Dry matter accumulation in the shoots of potato was greater with sunn hemp than with mineral nitrogen. The accumulation of dry matter in tubers and in the whole plant increased over time at higher rates of sunn hemp than with mineral fertilizer. Commercial and total potato productivity increased with sunn hemp quantity. Green manure at higher rates (400 and 200 Kg ha-1) increased the accumulation of dry matter in potato aboveground parts and in tubers. The commercial productivity of potato was 24% greater with green manure than with mineral fertilizers, indicating the potential of sunn hemp to provide adequate quantities of nitrogen for the growth and development of this crop.

Palavras-chave : Crotalaria juncea; harvest index; nitrogen; Solanum tuberosum.

        · resumo em Espanhol     · texto em Inglês     · Inglês ( pdf )

 

Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons