PEMUPUKAN NITROGEN, FOSFOR, DAN KALIUM PADA TANAMAN AKAR WANGI

ROSIHAN ROSMAN, OCTIVIA TRISILAWATI, SETIAWAN SETIAWAN

Abstract


ABSTRAK
Dosis pupuk N, P, dan K optimal untuk akar wangi belum diketahui
dan penggunaannya  masih beragam. Penelitian bertujuan untuk
mendapatkan komposisi dosis pupuk N, P, dan K optimal yang dapat
meningkatkan produktivitas akar wangi. Penelitian dilakukan di Desa
Sukakarya, Garut dari bulan Januari 2009 sampai dengan Desember 2010
menggunakan rancangan Acak Kelompok, dengan 3 ulangan. Perlakuan
meliputi 9 kombinasi pupuk N, P, dan K: (1). Kontrol; (2) 100 kg SP-36 +
75 kg KCl; (3) 100 kg ZA + 75 kg KCl; (4) 100 kg ZA + 50 kg SP-36 + 75
kg KCl; (5) 100 kg ZA + 100 kg SP-36 + 75 kg KCl; (6) 100 kg ZA + 100
kg SP-36 + 150 kg KCl; (7) 100 kg ZA + 100 kg SP-36; (8) 200 kg ZA +
100 kg SP-36 + 75 kg KCl; (9) 200 kg ZA + 100 kg SP-36 + 150 kg KCl.
Panen dilakukan pada 12, 14, dan 16 bulan setelah tanam (BST). Hasil
menunjukkan bahwa pemupukan dosis 100 kg ZA + 75 kg KCl
menghasilkan minyak 52,59 dan 67,78 kg/ha (12 dan 14 BST) dan 200 kg
ZA + 100 kg SP-36 + 75 kg KCl menghasilkan 67,76 kg /ha (16 BST),
dengan kadar vetiverol lebih dari 50%.
Kata kunci: Vetiveria zizanioides, pemupukan, vetiverol, produksi, mutu
minyak

ABSTRACT
The optimum dosage of N, P, and K fertilizer has not been known
yet and it usage was still varied. The research aim is to obtain an optimal
composition of N, P, and K fertilizer that could increase productivity of
vetiver crop. The researsch has been conducted in Sukakarya Village,
Garut, from January 2009 to December 2010. The research was arranged
in randomized block design, with 3 replications and N, P, and K fertilizer
combination treatments i.e.: (1) Control; (2) 100 kg SP-36 + 75 kg KCl;
(3) 100 kg ZA + 75 kg KCl; (4) 100 kg ZA + 50 kg SP-36 + 75 kg KCl;
(5) 100 kg ZA + 100 kg SP-36 + 75 kg KCl; (6) 100 kg ZA + 100 kg SP-
36 + 150 kg KCl; (7) 100 kg ZA + 100 kg SP-36; (8) 200 kg ZA + 100 kg
SP-36 + 75 kg KCl; (9) 200 kg ZA + 100 kg SP-36 + 150 kg KCl.
Harvesting was done at 12, 14 and 16 months after planting (MAP). The
result showed that the dose of 100 kg ZA + 75 kg KCl produced vetiver oil
52,59 and 67,78 kg/ha (12 and 14 MAP). Meanwhile the dose of 200 kg
ZA + 100 kg SP-36 + 75 kg KCl produced 67,76 kg/ha (16 MAP),
respectively. vetiverol content were more than 50%.
Key words: Vetiveria zizanioides, fertilizing, vetiverol, production, oil
quality


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DOI: http://dx.doi.org/10.21082/jlittri.v19n1.2013.33-40

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