Source: SEAMEO BIOTROP's Research Grant | 2017
Abstract:
The invasive bamboo plants Chimonobambusa quadrangularis have a
high risk infestation that should be eradicated
or control in preventing the spread to a larger areas of the forest of Gunung Gede Pangrango National Park (GGPNP). The aims of the
research are: 1) To test the hypothesis that the
invasion bambu kerisik (C. quadrangularis) will reduce
biodiversity, that may lead altered ecosystem structure; 2) To understand
the plant structure and life history of bambu kerisik its pool of potential
tiller recruits, and 3) To develop control methods using herbicides and
extract of Mikania micrantha. A vegetation analysis using nested sampling method was conducted in
resulting the forest biodiversity. The population structure of bamboo was
carried out by harvesting its shoots and rhizomes and collected some data on
height and diameter of plant, bud bank, and rhizomes length. The experiment of
herbicide and extract M. micrantha
application was conducted at green house of SEAMEO BIOTROP. The
important value index indicated that bamboo was supressed
the regeneration of plant local species in GGPNP. It will inflict a negative
impact on natural regeneration where the number of local trees will decrease in
the future due to only small number of local species seedling would grow and
the area was invaded by IAPS. The high growth rate of bamboo
shown by the relative growth rate (RGR). The RGR at the core zone was higher
than at the periphery zone. During the rainy season, the bamboo allocated their
dry weight to tdevelop their plant part on the soil surface, while at the dry
season was accumulated to form rhizomes. The experiment in controlling
bamboo was performed by using exract of Mikania
micrantha, glyphosate, and glufosinate. Application of M. micrantha (0.25 - 0.75 kg/ha) is not effective in controlling
bamboo kerisik. Nevertheless, extract of M. micrantha was able to inhibit its
rhizome at dosage of 26.43%, 18.65%, and 10.80%. Various dosages of glufosinate and glyphosate were significantly
affected to eradicate the rhizome up to 95-100 %. Therefore, it is recommended
to eradicate bamboo using glyphosate at a dosage of 5 kg a.i./ha with multiple
repitition at GGPNP.