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All Journal Proceedings of Annual International Conference Syiah Kuala University - Life Sciences & Engineering Chapter Jurnal Darma Agung
Bilter A. Sirait
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Study of early screening of potato (Solanum tuberosum L.) as a result of drought stress (in vitro) . Charloq; Ernitha Panjaitan; Bilter A. Sirait
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 2, No 1 (2012): Life Sciences
Publisher : Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (142.987 KB)

Abstract

Preliminary studies in Screening of Potato (Solanum tuberosum L.) as a result of drought stress (in vitro). This study aim was to determine the limits of potato (Solanum tuberosum L.) to drought stress conditions in vitro using PEG. This research was conducted at the Tissue Culture Laboratory Unit / Laboratorium Kultur Jaringan UPT/Balai Benih Induk Hortikultura Dinas Pertanian Propinsi Sumatera Utara, Jl. Karya Jasa No. 6 Gedung Johor Medan in March 2012 to June 2012. The Completely Randomized Design (non factorial) was used with PEG concentrations of five levels, namely: P1 = 10%, P2 = 20%, P3= 30%, P4 = 40% and P5 = 50% with 5 replications. The results showed that increasing the concentration of PEG will reduce the percentage of plantlets survival, reduce plant height, number of roots and number of nodes. Treatment of 50% PEG resulted in the death of potato cuttings due to drought stress.
PENGARUH PEMBERIAN PUPUK KANDANG AYAM DAN STRESS AIR TERHADAP PERTUMBUHAN BIBIT KELAPA SAWIT (ELAEIS GUINEENSIS JACQ.) VARIETAS TENERA DI PRE-NURSERY Culina Siringo-ringo; Agnes Imelda Manurung; Bilter A. Sirait
Jurnal Darma Agung Vol 29 No 2 (2021): AGUSTUS
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Darma Agung (LPPM_UDA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46930/ojsuda.v29i2.1058

Abstract

Penelitian ini bertujuan untuk menganalisa pengaruh pemberian pupuk kandang ayam dan stress air terhadap pertumbuhan bibit kelapa sawit (Elaeis guineensis Jacq.) varietas tenera di pre-nursery. Penelitian dilaksanakan di Jln.Bunga Ncole Raya XXX No.4, Kelurahan Kemenangan Tani, Kecamatan Medan Tuntungan dengan ketinggian tempat ± 12 mdpl, yang dimulai pada bulan Mei hingga bulan Agustus 2020. Metode Penelitian menggunakan Rancangan Acak Kelompok (RAK) faktorial terdiri dari dua factor, faktor pertama adalah perlakuan dosis pupuk kandang ayam terdiri atas 3 taraf: A0 = kontrol, A1= 25% Pupuk kandang ayam dan A2 = 50% pupuk kandang ayam. Faktor kedua adalah pemberian stress air terdiri atas 3 taraf: R1 = 0.3 l/polybag/hari, R2 = 0.3 l/polybag/2hari, dan R3 = 0.3 l/polybag/4hari. Hasil penelitian menunjukkan bahwa, perlakuan dosis pupuk kandang ayam berpengaruh nyata terhadap tinggi tanaman, panjang daun, lebar daun dan bobot basah tanaman bibit kelapa sawit. Perlakuan pemberian stress air berpengaruh nyata terhadap tinggi tanaman, panjang daun, lebar daun bibit kelapa sawit. Kombinasi perlakuan antara pemberian pupuk kandang ayam dan stress air tidak nyata terhadap seluruh peubah amatan.
Co-Authors Agnes Imelda Manurung Charloq Culina Siringo-ringo Ernitha Panjaitan