RESPON LIMA AKSESI JAHE PUTIH KECIL (Zingiber officinale var. Amarum) TERHADAP PEMUPUKAN

MUCHAMAD YUSRON, CHEPPY SYUKUR, OCTIVIA TRISILAWATI

Abstract


ABSTRAK
Penggunaan varietas jahe yang responsif terhadap pemupukan dosis
rendah, diharapkan mampu meningkatkan efisiensi pemupukan dan
menekan pencemaran lingkungan. Penelitian dengan tujuan untuk
mengetahui respon lima aksesi jahe putih kecil terhadap pemupukan dosis
rendah telah dilaksanakan di Kebun Percobaan Cimanggu pada bulan
Agustus 2009 sampai Mei 2010. Lima aksesi jahe putih kecil dari daerah
marginal ditanam dalam polibag dan disusun menggunakan rancangan
acak kelompok yang diulang 3 kali. Setiap perlakuan terdiri atas 20
tanaman. Dua perlakuan yang diuji secara faktorial adalah, faktor I adalah
5 aksesi jahe putih kecil, yaitu (1) Ziof 0004, (2) Ziof 0007, (3) Ziof 0008,
(4) Ziof 0013, dan (5) Ziof 0014, dan faktor II adalah dosis pupuk, yaitu
(a) 50% dosis anjuran (200 kg/ha urea + 150 kg/ha SP-36 + 150 kg/ha
KCl), (b) 75% dosis anjuran (300 kg/ha urea + 225 kg/ha SP-36 + 225
kg/ha KCl), dan (c) dosis anjuran (400 kg/ha urea + 300 kg/ha SP-36 +
300 kg/ha KCl). Masing-masing perlakuan diberi pupuk kandang sebagai
pupuk dasar dengan dosis 20 t/ha. Pengamatan dilakukan terhadap
parameter pertumbuhan (tinggi tanaman, jumlah anakan, diameter batang,
dan jumlah daun), hasil dan serapan unsur hara N, P, dan K pada umur 4
BST dan 9 BST. Hasil penelitian menunjukkan bahwa masing-masing
aksesi memberikan respon yang berbeda terhadap penurunan dosis pupuk,
baik pada fase pertumbuhan maupun produksi tanaman jahe. Pengurangan
dosis pupuk sampai 25% tidak mengurangi produksi jahe, tetapi penurunan
dosis pupuk sampai 50% dari dosis rekomendasi menyebabkan penurunan
produksi jahe secara nyata. Komposisi unsur hara N, P, dan K yang
diserap berbeda pada setiap fase pertumbuhan tanaman.
Kata kunci : Aksesi, Zingiber officinale, pemupukan, pertumbuhan,
produksi

ABSTRACT
Response of five accessions of small white ginger to
fertilizers
The use of ginger varieties responsive to low fertilization dosages,
is expected to increase fertilizer use efficiency and reduce environmental
pollution. Research aimed at observing response of five small white ginger
accessions of low-dosage fertilization has been conducted in the Cimanggu
Experimental Station in from August 2009 through May 2010. Five small
white ginger accessions from marginal areas were planted in polybags.
The experiment was and arranged using a randomized block design was
repeated with 3 times replications. Each treatment consisted of 20 plants.
Two treatments were tested factorially, where factor I : 5 small white
ginger accessions, namely (1) Ziof 0004, (2) Ziof 0007, (3) Ziof 0008, (4)
Ziof 0013, and (5) Ziof 0014, and factor II : 3 fertilization dosages is
dosage of fertilizer, namely (a) 50% recommendation dosage (200 kg urea
+ 150 kg SP-36 + 150 kg KCl per hectare), (b) 75% recommendation
dosage (300 kg urea + 225 kg SP-36 + 225 kg KCl per hectare), and (c)
recommendation dosage (400 kg Urea + 300 kg SP-36 + 300 kg KCl per
hectare). Each treatment was given 20 t/ha of manure as basal fertilizer.
The parameters observed were growth parameters (plant height, number of
tillers, stem diameter, and number of leaves), yield and nutrient uptake of
N, P, and K at 4 and 9 months after planting (MAP). The results showed
that each of the accessions responded differently to the reduction of
fertilizer dosages, either in vegetative or generative growth phase of ginger
plants. Reduction of fertilizer dosages to 25% did not significantly reduce
the yield of ginger, however, fertilizer dosages reduction up to 50% of the
recommended dosages led to significant decrease of ginger yield.
Compositions of N, P, and K nutrients absorbed by plants were different in
every phase of plant growth.
Keywords : Accessions, Zingiber officinale, fertilizer, growth, yield


Full Text:

PDF


DOI: http://dx.doi.org/10.21082/jlittri.v18n2.2012.66-73

Refbacks

  • There are currently no refbacks.




Copyright (c)


Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.




P-ISSN: 0853-8212
E-ISSN: 2528-6870

Pusat Penelitian dan Pengembangan Perkebunan

(Indonesian Center for Estate Crops Research and Development)

Jln. Tentara Pelajar No 1, Kampus Penelitian Cimanggu

Bogor 16111 Indonesia

Phone: +62251-8313083

Fax: +62251-8336194

Email: littri_puslitbangbun@yahoo.co.id



View My Stats