USEING ALGAL ORGANIC FERTILIZERS

Autores

  • Élica Amara Cecília Guedes Universidade Federal de Alagoas
  • Gaus Silvestre de Andrade Lima Universidade Federal de Alagoas
  • Laurício Endres Universidade Federal de Alagoas

DOI:

https://doi.org/10.28998/rca.v10i1.730

Resumo

Algae have been explored as inorganic nutrient sources, human and animal food and biochemical products. Several beaches in the northeastern state of Alagoas, Brazil, frequently experience large amounts of algal drifts, representing a huge amount of biomass that could be used as an organic fertilizer for coastal farmers. The purpose of this study was to observe the growth and development of lettuce grown using algal with organic fertilizers. The lettuce was grown in the following conditions: controlled, soil neither  algal powder nor cattle manure, soil plus 5% of algal powder, and soil plus 5% of cattle manure. The lettuce plantlets were transferred to a substrate and harvested with after 60 days. The fresh and dry mass, shoot and root length of the lettuce plants, and the mineral nutrient content of the algae fertilizer were evaluated as parameters Algae fertilizers have low levels of phosphorus and but have suitable levels of other mineral nutrients when compared to other organic fertilizers. Algal fertilizers induced a similar growth response in lettuce plants compared to cattle manure. Overall, this data lets us conclude that algal drifts, with the addition of phosphorus and potassium, might be a good resource as an organic fertilizer.

 

Biografia do Autor

Élica Amara Cecília Guedes, Universidade Federal de Alagoas

Instituto de Ciências Biológicas e da Saúde

Gaus Silvestre de Andrade Lima, Universidade Federal de Alagoas

Centro de Ciências Agrárias

Laurício Endres, Universidade Federal de Alagoas

Centro de Ciências Agrárias

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Publicado

20/12/2012

Edição

Seção

Produção Vegetal