Growth and Production of Porang (Amorphopallus oncophillus Prain)under Damar (Agathis borneensis) Stand

ABSTRACT

Porang (Amorphopallus oncophillus Prain) is a perrennial herb and a shade demanding plant, which produces tubers. The plant grow naturally in tropical forests and recently started to be cultivated due to its high economic value tubers. The research aimed to analyse the growth and production of the porang plant under two age classes of damar (Agathis borneensis) stand in forest area of KPH Banyumas Timur, Perhutani in the period of 2007 until 2009. The research was an experiment using Split Plot Design with three replications. The main plot was age classes (KU) of damar stand (KU II and KU V). The sub-plots cover two factors i.e.: A: source of planting materials (A1: tuber and A2: bulbil or bupil; bupil is a like fruit produce at each of branch); B: lime (B0: without lime and B1: with lime, 2 ton per ha). Age class of damar stand did not lead to a significant effect on survival rate of porang at three months old, but after a dormant period the survival rate of porang under KU V was significantly higher than KU II. Lime treatment gave a negative impact to the survival rate of porang derived from tuber, in contrary it gave a positive impact to those derived from bupil. Height of the plant, number of branches and dry weight of tubers produced under KU V of damar stand, with only 19% of light intensity reached the forest floor, were significantly higher than those under KU II, with 71% light intensity reached the forest floor. The height and number of branches of the plants derived from tuber were significantly higher than those derived from bupil. Interaction between source of planting materials and lime treatments was lead to a significant effect to the harvested dry weight of the tubers production, where the treatments of tuber without lime have the highest harvested dry weight of tuber production. It is recommended to develop porang plantation under five or more age class of damar stand by using tubers as planting materials without lime or bupil with lime.

Keywords: Shad tolerant, tuber, bupil, lime, age classes, light intensity

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Informasi Detil

Judul Seri

Proceeding INAFOR (International Conference of Indonesia Forestry Researchers) 2011

No. Panggil

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Penerbit

: ., 2012

Deskripsi Fisik

385-395

Bahasa

English

ISBN/ISSN

978-979-8452-45-1

Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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