Pengaruh Asam Giberelin Terhadap Pertumbuhan Vegetatif dan Pembungaan Tanaman Jarak Pagar (Jatropha curcas L.) Populasi IP3P.
ABSTRAK
Rhandyni Septia Prasanti. 2012. Pengaruh Asam Giberelin terhadap
Pertumbuhan Vegetatif dan Pembungaan Tanaman Jarak Pagar
(Jatropha curcas L.) Populasi IP-3P. Dibimbing oleh Rachmat Hidayat
dan Cucu Suherman.
Tujuan percobaan ini adalah untuk mengetahui pengaruh aplikasi asam
giberelin terhadap pertumbuhan vegetatif dan pembungaan tanaman jarak
pagar (Jatropha curcas L.) IP-3P asal bibit hasil berbagai pemupukan.
Percobaan dilaksanakan di kebun percobaan Ciparanje Jatinangor, Sumedang,
Jawa Barat. Ketinggian tempat ±750 m di atas permukaan laut (dpl), jenis
tanah Inseptisol, tipe iklim C (menurut klasifikasi Schmidt dan Ferguson).
Percobaan dilakukan mulai bulan Desember 2011 sampai April 2012.
Rancangan yang digunakan yaitu RAK dengan menggunakan Analisis
Dwiragam yang terdiri atas 16 perlakuan yaitu B1 (bibit dari perlakuan pupuk
kotoran ayam 2:1 +urea 0,5g), B2 (bibit dari perlakuan pupuk kotoran ayam
2:1 +urea 1g), B3 (bibit dari perlakuan pupuk kotoran ayam 2:1 +urea 1,5g),
B4 (bibit dari perlakuan pupuk kotoran ayam 2:1 +urea 2g), B5 (bibit dari
perlakuan pupuk kotoran sapi 2:1 +urea 0,5g), B6 (bibit dari perlakuan pupuk
kotoran sapi 2:1 +urea 1g), B7 (bibit dari perlakuan pupuk kotoran sapi 2:1
+urea 1,5g), dan B8 (bibit dari perlakuan pupuk kotoran sapi 2:1 +urea 2g),
dikombinasikan dengan G1 (asam giberelin 0ppm) dan G2 (asam giberelin
200ppm) dilakukan dua kali ulangan. Hasil penelitian menunjukan bahwa
tidak terdapat pengaruh pemberian asam giberelin pada bibit hasil berbagai
pemupukan terhadap pertumbuhan vegetatif tanaman jarak pagar tetapi
perlakuan B6G2 (bibit (dari perlakuan pupuk kotoran sapi 2:1 +urea
1g)+200ppm asam giberelin) memberikan pengaruh paling baik pada inisiasi
pembungaan tanaman jarak pagar.
Kata Kunci: Jarak Pagar, Asam Giberelin, Pertumbuhan Vegetatif,
Pembungaan.
i
ABSTRACT
Rhandyni Septia Prasanti. 2012. The effect of Gibberellic acid on
vegetatif growth and flowering processes of Jatropha curcas L. population
IP-3P. Guided by Rachmat Hidayat and Cucu Suherman.
The aim of this experiment is to examine effect of Gibberellic Acid
application on vegetative growth and flowering processes of Jatropha curcas
L in IP-3P population with seedling originally from various fertilization
result. This experiment held on Ciparanje, Jatinangor, Sumedang, Jawa Barat
with height +750 m above sea level. Soil type Inseptisol, climate type C
(based on Classification of Schmidt and Fergusson). This experiment was
held from December 2011 until April 2012. This experiment use Randomized
Block Design with Analysis of Covariant, Samples that consist of 16
treatment combinations; B1 (seedling that treated with fertilizer from chicken
manure 2:1, +urea 0,5g), B2 (seedling that treated with fertilizer from chicken
manure 2:1, +urea 1g), B3 (seedling that treated with fertilizer from chicken
manure 2:1, +urea 1,5g), B4 (seedling that treated with fertilizer from chicken
manure 2:1, +urea 2g), B5 (seedling that treated with fertilizer from cow
manure 2:1, +urea 0,5g), B6 (seedling that treated with fertilizer from cow
manure 2:1, +urea 1g), B7 (seedling that treated with fertilizer from cow
manure 2:1, +urea 1,5g), and B8 (seedling that treated with fertilizer from cow
manure 2:1, +urea 2g) that combine with G1 (0ppm gibberellic acid) and G2
(200ppm gibberellic acid). All samples have 2 variant. The experiment shows
that there are no affect of gibberellic acid application on this plant vegetative
growth. However, treatment B6G2 (seedling that treated with fertilizer from
cow manure 2:1, +urea 1g, + 200ppm gibberellic acid) gives best result on the
flowering initiation on this plant.
Keyword: Physic Nut, Gibberellic Acid, Vegetatif Growth, Flowering
processes.
ii
Rhandyni Septia Prasanti. 2012. Pengaruh Asam Giberelin terhadap
Pertumbuhan Vegetatif dan Pembungaan Tanaman Jarak Pagar
(Jatropha curcas L.) Populasi IP-3P. Dibimbing oleh Rachmat Hidayat
dan Cucu Suherman.
Tujuan percobaan ini adalah untuk mengetahui pengaruh aplikasi asam
giberelin terhadap pertumbuhan vegetatif dan pembungaan tanaman jarak
pagar (Jatropha curcas L.) IP-3P asal bibit hasil berbagai pemupukan.
Percobaan dilaksanakan di kebun percobaan Ciparanje Jatinangor, Sumedang,
Jawa Barat. Ketinggian tempat ±750 m di atas permukaan laut (dpl), jenis
tanah Inseptisol, tipe iklim C (menurut klasifikasi Schmidt dan Ferguson).
Percobaan dilakukan mulai bulan Desember 2011 sampai April 2012.
Rancangan yang digunakan yaitu RAK dengan menggunakan Analisis
Dwiragam yang terdiri atas 16 perlakuan yaitu B1 (bibit dari perlakuan pupuk
kotoran ayam 2:1 +urea 0,5g), B2 (bibit dari perlakuan pupuk kotoran ayam
2:1 +urea 1g), B3 (bibit dari perlakuan pupuk kotoran ayam 2:1 +urea 1,5g),
B4 (bibit dari perlakuan pupuk kotoran ayam 2:1 +urea 2g), B5 (bibit dari
perlakuan pupuk kotoran sapi 2:1 +urea 0,5g), B6 (bibit dari perlakuan pupuk
kotoran sapi 2:1 +urea 1g), B7 (bibit dari perlakuan pupuk kotoran sapi 2:1
+urea 1,5g), dan B8 (bibit dari perlakuan pupuk kotoran sapi 2:1 +urea 2g),
dikombinasikan dengan G1 (asam giberelin 0ppm) dan G2 (asam giberelin
200ppm) dilakukan dua kali ulangan. Hasil penelitian menunjukan bahwa
tidak terdapat pengaruh pemberian asam giberelin pada bibit hasil berbagai
pemupukan terhadap pertumbuhan vegetatif tanaman jarak pagar tetapi
perlakuan B6G2 (bibit (dari perlakuan pupuk kotoran sapi 2:1 +urea
1g)+200ppm asam giberelin) memberikan pengaruh paling baik pada inisiasi
pembungaan tanaman jarak pagar.
Kata Kunci: Jarak Pagar, Asam Giberelin, Pertumbuhan Vegetatif,
Pembungaan.
i
ABSTRACT
Rhandyni Septia Prasanti. 2012. The effect of Gibberellic acid on
vegetatif growth and flowering processes of Jatropha curcas L. population
IP-3P. Guided by Rachmat Hidayat and Cucu Suherman.
The aim of this experiment is to examine effect of Gibberellic Acid
application on vegetative growth and flowering processes of Jatropha curcas
L in IP-3P population with seedling originally from various fertilization
result. This experiment held on Ciparanje, Jatinangor, Sumedang, Jawa Barat
with height +750 m above sea level. Soil type Inseptisol, climate type C
(based on Classification of Schmidt and Fergusson). This experiment was
held from December 2011 until April 2012. This experiment use Randomized
Block Design with Analysis of Covariant, Samples that consist of 16
treatment combinations; B1 (seedling that treated with fertilizer from chicken
manure 2:1, +urea 0,5g), B2 (seedling that treated with fertilizer from chicken
manure 2:1, +urea 1g), B3 (seedling that treated with fertilizer from chicken
manure 2:1, +urea 1,5g), B4 (seedling that treated with fertilizer from chicken
manure 2:1, +urea 2g), B5 (seedling that treated with fertilizer from cow
manure 2:1, +urea 0,5g), B6 (seedling that treated with fertilizer from cow
manure 2:1, +urea 1g), B7 (seedling that treated with fertilizer from cow
manure 2:1, +urea 1,5g), and B8 (seedling that treated with fertilizer from cow
manure 2:1, +urea 2g) that combine with G1 (0ppm gibberellic acid) and G2
(200ppm gibberellic acid). All samples have 2 variant. The experiment shows
that there are no affect of gibberellic acid application on this plant vegetative
growth. However, treatment B6G2 (seedling that treated with fertilizer from
cow manure 2:1, +urea 1g, + 200ppm gibberellic acid) gives best result on the
flowering initiation on this plant.
Keyword: Physic Nut, Gibberellic Acid, Vegetatif Growth, Flowering
processes.
ii