Evaluation of chañar seed cake from biodiesel production as a soil amendment
Author
dc.contributor.author
Santibáñez, C.
Author
dc.contributor.author
Varnero Moreno, María Teresa
es_CL
Admission date
dc.date.accessioned
2015-01-06T13:44:12Z
Available date
dc.date.available
2015-01-06T13:44:12Z
Publication date
dc.date.issued
2014
Cita de ítem
dc.identifier.citation
Journal of Soil Science and Plant Nutrition ,2014, 14(1), 129-138
en_US
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/120273
General note
dc.description
Artículo de publicación SciELO
en_US
Abstract
dc.description.abstract
One of the major problems for biodiesel producers is the disposal of the seed cake after expelling oil from seeds.
Every ton of biodiesel results in 2.5 to 3 tons of seed cake as byproduct. The physicochemical characteristics of this
residue indicate that itcould be converted into valuable organic fertilizer. In order to evaluate the feasibility of using
chañar seed cake from biodiesel production as a soil amendment, a greenhouse pot experiment was conducted. Seed
cake was applied mixed with soil, at rates of 0, 6, 12 and 24%. A single seedling of chañar per pot was transplanted
and after six months, plants were harvested for foliar analyses as well as some physiological characteristics. Seed
cake application increased dry biomass production and the shoot concentrations of N and chlorophyll. There were
no evident symptoms of phytotoxicity. The application of seed cake at 12% proved superior to the 6% treatment and
the control; ahigher dose of seed cake (24%) was not significantly different from the treatment with 12% in terms
of dry biomass production of chañar, foliar contents of N, P, Kor total chlorophyll. However, plant aerial biomass
was significantly correlated with soil microbial respiration and soil C biomass.