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  • Humus  (1)
  • [idt] Lauraceae
  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Phytochemistry 34 (1993), S. 397-400 
    ISSN: 0031-9422
    Keywords: [idt] Lauraceae ; [idt] Persea indica ; [idt] diterpene ; [idt] insecticide ; [idt] nitrogen ; [idt] phenolics ; [idt] ryanodol ; [idt] variation
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Publication Date: 2021-05-19
    Description: Con el propósito de evaluar el humus de lombriz roja californiana Eisenia foetida como biofertilizante para el crecimiento poblacional de dos microalgas marinas, fueron cultivadas Tetraselmis tetrathele y Chaetoceros muelleri en agua de mar enriquecida con cuatro diluciones (50; 200; 350 y 500 mL) de extracto líquido de humus. La especie T. tetrathele, cultivada en la dilución de 200 mL, no mostró diferencias con el patrón medio f/2 Guillard para los parámetros: concentración celular, velocidad de crecimiento, tiempo de duplicación y productividad. C. muelleri cultivado en el mismo biofertilizante a las diluciones antes descritas, mostró un comportamiento productivo inferior al patrón, por lo que fueron evaluadas dos nuevas diluciones (550 y 650 mL). Las concentraciones celulares alcanzadas con 550 y 650 mL del fertilizante orgánico y el patrón, no mostraron diferencias (p 〉 0,05) hasta el tercer día del cultivo, sin embargo, al evaluar el indicador productividad se obtuvieron los mejores valores con 550 mL del extracto líquido de humus. Por los resultados obtenidos en este estudio con el biofertilizante y su bajo costo de producción se concluyó que resulta una alternativa viable para la producción de las microalgas C. muelleri y T. tetrathele hasta volúmenes de 2 L.
    Description: To evaluate the humus of of red worm californian Eisenia foetida were cultured microalgaes Tetraselmis tetrathele and Chaetoceros muelleri in seawater enriched with four dilutions (50; 200; 350 and 500 mL) of liquid extract of humus of red worm californian Eisenia foetida. The T. tetrathele specie, grown at a dilution of 200 mL, showed no differences with the standard f/2 Guillard for the parameters: cell concentration, growth rate, doubling time and productivity. C. muelleri grown in the same biofertilizer to dilutions as described above, showed a lower productive performance pattern, so that two further dilutions were evaluated (550 and 650 mL). The cell concentrations reached with 550 and 650 mL of organic fertilizer and the pattern did not differ (p 〉 0,05) until the third day of culture, however, in assessing the productivity indicator the best values were obtained with 550 mL of liquid extract humus. From the results obtained in this study with the alternative means and low cost of production is concluded that it is a viable alternative for the production of microalgaes C. muelleri and T. tetrathele up to volumes of 2 L.
    Description: Published
    Description: Chaetoceros muelleri
    Description: Tetraselmis tetrathele
    Keywords: Biofertilizers ; Humus
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed , Article
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