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The r esearch was conducted at the cutting red betel ( Piper crocatum Ruiz and Pav .) to determined the effect of (1) the difference growth of cuttings of red betel which are given IBA and without IBA, (2) the concentration of  NAA on growth of cutting red betel, (3) the concentration of NAA on growth of cutting red betel on each given IBA. The treatment was arranged in factorial (2 x 4) in randomized block design with three replication. T he first factor were without IBA ( a 0 ) and the giv en of 1 . 000 ppm IBA ( a 1 ). The second factor were the concentration of NAA consists of: 0 ppm ( b 0 ), 1 . 000 ppm (b1), 2 . 000 ppm (b2), and 4 . 000 ppm (b3). The results showed that the NAA concentration of 4000 ppm produced the most number of roots on either at the n od e or at the base of cutting. Planting cutting red betel which given IBA 1 . 000 ppm was able to accelerate d the time leaves open and increase d the number of cutting which germinate. The mixture d of giving IBA 1 . 000 ppm and the concentration of NAA 4 . 000 pp m, produce d the most number of cutting that germinate d . Key w ord s : red betel , given IBA , dan c oncentration NAA Diterima: 10-04-2013, disetujui: 27-09-2013

jurnal agrotek tropika/jurnal agrotek tropika.

PENGARUH PEMBERIAN IBA (Indole Butyric Acid) DAN KONSENTRASI NAA (Naphthalene Acetic Acid) TERHADAP KEBERHASILAN PENYETEKAN SIRIH MERAH (Piper crocatum Ruiz and Pav.)