Pertumbuhan Varietas Pak Coy (Brassica rapa L. ssp. chinensis (L.)) dengan Pemberian NAA (Naphthalene-3-acetic Acid) pada Media Hidroponik Terapung
Growth of Pak Coy Varieties (Brassica rapa L. ssp. chinensis (L.)) with Applied NAA (Naphthalene-3-acetic Acid) on Floating Hydroponics Medium
DOI:
https://doi.org/10.32734/joa.v6i2.2618Keywords:
hydroponics, naphthalene-3-acetic acid, pak coy, varieties, hidroponik, varietasAbstract
The objective of the research was to know growth respons of Pak Coy varieties with
applied NAA on floating hydroponics medium. This research was conducted at
experimental fields on Compost Centre, Faculty of Agriculture, University of Sumatera
Utara, from February-April 2017 with factor such as varieties (Green and Red) and
applied NAA (0, 10, 20 ppm) using two way randomized design then analyzed using
Duncan Multiple Range Test on 5%. The parameters observed were plants length,
number of leaf, chlrorophyll values, stems diameters, roots length, fresh weight per
sample,fresh weight per plot and fresh apical weight. The results showed that varieties
was significantly different on number of leaf 3, 4, and 5 weeks after planted,
chlrorophyll values on morning, noon and afternoon, stems diameters, fresh weight per
sample,fresh weight per plot and fresh apical weight. Applied NAA on hydroponics
medium was significantly different on all parameters.
Penelitian ini bertujuan untuk mengetahui respon pertumbuhan varietas Pak Coy dengan pemberian NAA pada media hidroponik terapung. Penelitian ini dilaksanakan di Lahan Percobaan Compost Centre, Fakultas Pertanian, Universitas Sumatera Utara, dimulai dari bulan Februari hingga April 2017 dengan faktor varietas (Green dan Red) dan pemberian NAA (0, 10, 20 ppm) menggunakan Rancangan Acak kelompok (RAK). Data yang diperoleh dianalisis dengan sidik ragam dan dilanjutkan dengan Uji DMRT (Duncan Multiple Range Test) pada taraf 5%. Peubah yang diamati adalah panjang tanaman, jumlah daun, kandungan klorofil daun, diameter batang, panjang akar, bobot segar per sampel, bobot segar per plot dan bobot segar tajuk per sampel. Hasil penelitian menunjukkan bahwa faktor varietas berpengaruh nyata terhadap peubah amatan jumlah daun pada umur 3, 4 dan 5 MST, nilai klorofil pada pagi, siang dan sore hari, diameter batang, bobot segar per sampel, bobot segar per plot dan bobot segar tajuk. Pemberian larutan NAA pada nutrisi hidroponik menunjukkan pengaruh nyata terhadap semua peubah amatan yang diamati.
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