Pengaruh Pupuk Kompos Berbahan Campuran Limbah Cair Tahu, Daun Lamtoro dan Isi Rumen Sapi sebagai Media Kultur terhadap Kepadatan Populasi Spirulina Sp.
Abstract: Most of farmer still
use inorganic fertilizer even chemistry on the long term will bad affect to
environment because it can’t be recycle to return. Therefore we need a natural
alternative fertilizer that didn’t have bad affect to environment but can
optimize Spirulina sp. reproduction. It was compost fertilizer materialized by
mixture of liquid waste of soybean curd, lamtoro leaf and content of cow
rument. This research have a purpose to know the content of N, P and K substance in compost fertilizer
materialized by mixture of liquid waste of soybean curd, lamtoro leaf and
content of cow rument ; to know the influence of adding compost to the
population solidity of Spirulina sp. ; and to know the relative growth rate of
Spirulina sp. population after adding compost fertilizer.This research consist
of two stage, the first stage made compost fertilizer materialized by mixture
of liquid waste of soybean curd, lamtoro leaf and content of cow rument which
is descriptive research. The second stage was the application of compost fertilizer
as culture media of Spirulina sp. which is experimental research. This research
used The Randomized Block Design (RBD) with 5 factors treatment consentration.
The consentration was : 6,412 g/10L;
9,618 g/10L ; 12,824 g/10L dan 16,03 g/10L. Beside that this research
was used Urea 0,8 g/10L and TSP 0,3 g/10L as a control. The measured parameter
in this research is the population solidity of Spirulina sp. and the relative
growth rate of Spirulina sp. population.The result showed that the substance
content of N, P and K in compost fertilizer materialized by mixture of liquid
waste of soybean curd, lamtoro leaf and content of cow rument that used in this
research was high, such as N = 2,64% ; P = 1,56% ; K = 1,17%. The difference of
compost fertilizer gived influence to the population solidity of Spirulina sp.,
expecially in stationary phase. Each of this treatment shows different pattern
of growth, also different relative growth rate of Spirulina sp.
Key words: compost fertilizer,
Spirulina sp., fertilizer concentration, population solidity, growth rate
Penulis: NURYANI RAHMAWATI, Yuliani,
Evie Ratnasari
Kode Jurnal: jpbiologidd120415
