REGROWTH OF INDIGOFERA (Indigofera zollingeriana) IN PEATLAND

Abstrak

This study aims to determine the growth and fresh production of Indigofera zollingeriana biomass at 2,
3 and 4 months old re-growth maturity that grows in peatlands (sapric type). The experimental design used
in this study was a randomized block design (RBD) consisting of 3 treatments and 4 groups. The treatments
were indigofera biomass harvested at 2 months old re-growth maturity (2M), indigofera biomass harvested at
3 months old re-growth maturity (3M), and indigofera biomass harvested at 4 months old re-growth maturity
(4M). The results showed that the stage of maturity from 2 to 4 months significantly increased the length
of branches, the number of leaves, the ratio of leaves/branches, fresh production and dry matter content
of indigofera. The branches lengths of indigofera at 2M, 3M and 4M were 52.23 cm, 99.01 cm and 132.12
cm, respectively. The number of indigofera leaves at 2M was 1,648.1, then increased at 3M (4,424.8) and
at 4M (11,310.1). The percentage of leaves increased from 31.7% (2M) to 44% (4M), while the percentage
of branches decreased from 68.3% (2M) to 56% (4M). The average fresh production of indigofera per plant
at 2M, 3M, and 4M were 542,7 g/plant, 1,173.9 g/plant, and 2,858.8 g/plant, respectively. The dry matter
content of indigofera at 2M, 3M and 4M were 13.25%, 14.76%, and 15.76%, respectively. It was concluded
that Indigofera zollingeriana can grow well on peatland (sapric type). The highest fresh production of
Indigofera zollingeriana biomass was harvested at 4 months old re-growth maturity.

Keyword: Indigofera zollingeriana, peatland, re-growth maturity