Abstract:
The effects of different types of organic fertilizers on the growth and reproduction rate
of earthworm, Lumbricus rubellus were studied. The organic fertilizers used were horse,
cow and goat manure. The earthworm which has high protein content is used to feed the
fish especially ornamental fish. Besides, with using earthworm, water pollution can be
prevented. The animal manures were used as food resources for the earthworm.
Manures contain valuable nutrient such as nitrogen (N), phosphorus (P), potassium (K)
and sulfur (S). In this study, five earthworms were put into each polystyrene container
which contains soil mixed with animal manures. The ratio of animal manure and soil are
2:3. The growth of earthworms in term of weight was measured weekly while the
number of earthworm was calculated at the end of the experiment. Experiment for
weight measurement was conducted in one month and two month for reproduction rate
experiment
