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All Journal JBIO: jurnal biosains (the journal of biosciences) AGROEKOTEKNOLOGI BIOLINK (Jurnal Biologi Lingkungan, Industri, Kesehatan) Jurnal Ilmiah Biologi UMA (JIBIOMA)
E. Harso Kardhinata
Universitas Sumatera Utara
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology Medicine & Pharmacology

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Pengaruh Paclobutrazol Terhadap Jumlah Klorofil, Umur Berbunga, dan Umur Panen Dua Varietas Sorgum (Sorghum bicolor (L.) Moench) Amelia Aztrina; Luthfi A. M. Siregar; E. Harso Kardhinata
Jurnal Agroekoteknologi Vol 2, No 4 (2014)
Publisher : Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (141.311 KB) | DOI: 10.32734/jaet.v2i4.8418

Abstract

The objective of this research was to know effect of paclobutrazol to the number of chlorophyl,flowering time, and harvesting time of two sorghum varieties. This research was conducted inexperimental field at Jl. Pasar I Tanjung Sari, Medan from October 2013-January 2014,used randomized block design with two factors paclobutrazol concentration (0 g/l, 0,50 g/l,0,75 g/l, and 1 g/l) and varieties (Kawali and Numbu). Parameters measured were the number ofchlorophyl, flowering time, and harvesting time. The result showed that paclobutrazol affectedsignificantly on plant height, stem diameter, and flowering time. Varieties have significant differenton the number of chlorophyl, flowering time, and harvesting time.The interaction of the two factorsnot affected significantly on all parameters. There was no interaction between paclobutrazolconcentration and varieties to all parameters measured.Keywords: paclobutrazol, variety, sorghum
Effect of Ascorbic Acid to Recovery of Partial Tapping Panel Dryness (TPD) of Rubber Plant In The clones of PB 260 and IRR of 42 Nurhadi Satrio; Rosmayati Rosmayati; E. Harso Kardhinata; Radite Tistama; Ade Fipriani
Jurnal Agroekoteknologi Vol 4, No 4 (2016)
Publisher : Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jaet.v4i4.14040

Abstract

Effect of Ascorbic Acid to Recovery of Partial Tapping Panel Dryness (TPD) of Rubber Plant In The clones of PB 260 andIRR of 42,This aim of the research is to determine the effect of Ascorbic Acid to Recovery of Partial Tapping Panel Dryness (TPD) of clones PB 260 and IRR 42 rabber plant. This research was conducted at the research Estate and Physiological Laboratory of Balai Penelitian Sungei Putih, Pusat Penelitian Karet, Galang, Deli Serdang, Sumatra Utara, from May 2015 ­- October 2015, The research was designed by split plot with two factors. The main plot was clonesrubber plant (PB 260 and IRR 42), the subplot was treatments ascorbic acid(0 ppm, 150 ppm, 300 ppm, 450 ppm).Parameters measured were the levels of sucrose, inorganic phosphate, thiol, superoksidase dismutase (SOD), latex productivity and stoppage index.The results showed that clones PB 260 and IRR 42 rubber live significant different on production of latex. Application of Ascorbic acid him no significantly different on the levels of thiol, level of sukrosa,level of inorganic phosphate. The Interaction of the two treatment is significantly different with latex  productivity.
Peningkatan Kualitas Air Sungai Deli Dengan Menggunakan Kijing (Pilsbryoconcha exilis) Sebagai Biofilter Bakteri Patogen (Escherichia coli) Fici My Safitri Tanjung; E. Harso Kardhinata; Abdul Karim
Jurnal Ilmiah Biologi UMA (JIBIOMA) Vol 4, No 1 (2022): Mei 2022
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jibioma.v1i1.1224

Abstract

Water  is  a  basic  need  for  humans  because  it  is  needed,  among  others,  for  households,  industry, agriculture and improving public health. Clean water that meets the standards, namely physical, chemical, and microbiological requirements. Escherichia coli is one of the microbiological indicators in water. One of the sources of clean water used by the people in the city of Medan comes from the Deli river. The development of industry and settlements around the Deli river causes water pollution. Freshwater mussel as a biofilter that can be used to maintain the water quality of the Deli river. This study aims to determine the effective use of mussel as a biofilter of Escherichia coli bacteria and the most effective length of time to improve water quality. This study used RAL (Completely Randomized Design) with treatment durations K0 (Control), K1 (Day 5), K2 (Day 10 days) and Day 15. The results showed that mussel was effectively used as a biofilter to reduce the number of Escherichia coli and for 10 days was quite effective in reducing the number of Escherichia coli in Deli river water.
Co-Authors Abdul Karim Ade Fipriani Ahmad Andri Kusuma Amelia Aztrina Amriani Amriani Anwar anwar Arum Novi Sari Eva Sartini Bayu Febri Diana Lisa Saragi Fici My Safitri Tanjung Hanifah Mutia Zaida Ningrum Amrul Henny Yuslina Lestari Lidya Octaviani Siamtupang Luthfi A. M. Siregar Mbue Kata Bangun Nasution, Jamilah Nurhadi Satrio Rabiah Rabiah Radite Tistama Rahmadani Lubis Ratnawati ratnawati Rosmayati Rosmayati Sartini Sartini