Betty Natalie Fitriatin
, Tualar Simarmata
, Hersanti .
, Tienturmuktini .
Betty Natalie Fitriatin 1 ,
Tualar Simarmata 1 Hersanti . 1 Tienturmuktini . 4
- Faculty of Agriculture, Universitas Padjadjaran, Indonesia 1
- Faculty of Agriculture, Universitas Winayamukti, Indonesia 4
on Google Scholar
on PubMed
Problems using straw directly include the contamination of germs on the
straw from the previous crop. Alternatives that can be done are giving
inoculant of biological decomposers The purpose of the research to test
isolates decomposer in the rate of straw decomposition in soil and to
test isolates biofertilizer on rice plants in soil treated straw
compost. Greenhouse experiment was conducted for selecting isolates and
formulations decomposer consortium and biological agents as well as the
selection and formulation of biological fertilizers isolates. This
experiment was consisted of treatments, i.e. incubation time composting
(1, 2, 3, and 4 weeks) and inoculant (formulation A containing microbes
T. harzianum, Bacillus subtililis, Cytophaga sp. and Bacillus
licheniformis; i2 = Formulation B containing microbes B. subtililis,
Cytophaga sp., and B. licheniformis, Streptomyces sp.) The field
experiment was conducted to determine the effect of straw compost and
biofertilizer inoculants (nitrogen fixation bacteria and phosphate
solubilizing bacteria) on rice. Research at this stage using split plot
experimental design was repeated three times. The main plot was the
doses of straw compost + biofertilizer consisting of 8 treatments (0;
2.5; 5.0; 7.5 t ha-1 without and with biofertilizer 400 g ha-1). The
subplot was doses of inorganic fertilizer N, P and K consisting of 5
levels (100%, 90%, 80%, 70% and 60% of recommendations dosages). The
results showed that the A formulation containing T. harzianum, B.
subtililis, Cytophaga sp. and B. Licheniformis whereas B formulation
contains B. subtililis, Cytophaga sp., and B. Licheniformis,
Streptomyces sp. B formulation capable of decomposing straw is better
than A formulation. Application of straw compost and biofertilizer (5,0
t ha-1 + 400 g ha-1) could increase the yield of rice to 13.3% and
substitute 20% of inorganic fertilizer (N, P and K).
Composting, Biofertilizer, Biological agents, Straw, Rice.
Click to View
Click to View
Click to View