PEMANFAATAN LIMBAH SAGU SEBAGAI PENGENDALIAN GULMA PADA LADA PERDU

MUHAMMAD SYAKIR, M.H. BINTORO, H. AGUSTA AGUSTA, HERMANTO HERMANTO

Abstract


ABSTRAK
Limbah sagu di samping dapat dimanfaatkan sebagai sumber bahan
organik juga potensial digunakan sebagai amelioran dan herbisida nabati.
Penelitian bertujuan untuk mengetahui pengaruh limbah sagu dan cara
penyiangan gulma terhadap populasi gulma dan pertumbuhan lada
perdu. Penelitian dilaksanakan di Kebun Percobaan (KP) Institut Pertanian
Bogor (IPB) dan Laboratorium Balai Penelitian Tanaman Obat dan
Aromatik Balittro) dari bulan Mei 2003 sampai April 2004. Penelitian
menggunakan rancangan petak terbagi yang disusun secara faktorial. Cara
penyiangan gulma (S) sebagai petak utama dan komposisi limbah sagu
(L) sebagai anak petak. Susunan perlakuan sebagai berikut: S 1  =
penyiangan bersih dan S 2 = penyiangan terbatas. Komposisi limbah
sagu terdiri dari L 0 = tanpa bahan organik; L 1 = 100% limbah sagu, L 2
= 100% limbah sagu, dekomposisi 1 bulan, L 3 = 100% limbah sagu
dekomposisi 2 bulan; L 4 = 75% limbah sagu + 25% kompos; L 5  = 75%
limbah sagu + 25% kompos, dekomposisi 1 bulan; L 6 = 75% limbah
sagu + 25% kompos, dekomposisi 2 bulan; L 7 = 50% limbah sagu +
50% kompos; L 8 = 50% limbah sagu + 50% kompos, dekomposisi 1
bulan; L 9 = 50% limbah sagu + 50% kompos, dekomposisi 2 bulan;
L 10 = 25% limbah sagu + 75% kompos; L 11 = 25% limbah sagu + 75%
kompos, dekomposisi 1 bulan; dan L 12 = 25% limbah sagu + 75%
kompos, dekomposisi 2 bulan. Hasil penelitian menunjukkan bahwa
kandungan limbah sagu 75% limbah sagu + 25% kompos dekomposisi
2 bulan meningkatkan pertumbuhan dan produktivitas lada perdu.
Limbah sagu dengan 100% dalam bentuk segar dan dekomposisi
sampai 2 bulan efektif dalam menekan populasi gulma.
Kata kunci: Limbah sagu, gulma, lada perdu
ABSTRACT
The use of sago palm waste in controlling weed on
dwarf pepper
Sago palm waste can be used as a source of organic matter;
in addition, it can also be used as ameliorant and natural
herbicide. The objective of the research was to find out the
effect of sago palm waste and weeding method on the growth of
dwarf pepper and weed population. The research was conducted
at the experimental garden of the Bogor Agriculture Institute and
the Indonesian Medicinal and Aromatic Crops Research Institute
from May 2003 to April 2004. The research was arranged
factorially in split-plot design. The main plot was weeding
methods (S) and a composition of sago palm waste (L) as the sub
plot. The treatments were as follows: S 1 = clean weeding and S 2
= limited weeding. The composition of sago waste were Lo =
non organic matter; L 1 = 100% sago waste; L 2 = 100% sago
waste of one month decomposition; L 3 = 100% sago waste of two
months decomposition ; L 4 = 75% sago waste + 25% compost; L 5
= 75% sago waste + 25% compost of one month decomposition;
L 6 = 75% sago waste + 25% compost of two months
decomposition; L 7 = 50% sago waste + 50% compost; L 8 = 50%
sago waste 50% compost of one month decomposition; L 9 = 50%
sago waste + 50% compost of 2 months decomposition; L 10 =
25% sago waste + 75% compost’ L 11 = 25% sago waste + 75%
compost of one month decomposition; and L 12 = 25% sago waste
+ 75% compost of two months decomposition. The result showed
that the composition of 75% sago waste + 25% compost of two
months decomposition increase the growth and productivity of
dwarf pepper. The fresh (75 - 100%) sago palm waste of one
month  decomposition  was  effective  in  decreasing  weed
population.
Key words : Sago palm waste, weed, bushy black pepper

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DOI: http://dx.doi.org/10.21082/jlittri.v14n3.2008.107-112

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