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M Rahmansyah
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Pertumbuhan dan Produksi Jagung Pulut Lokal Sulawesi Selatan yang Ditanam di Polibag Pada Berbagai Kombinasi Perlakuan Pupuk Organik Rahmansyah, M; Juhaeti, Titi; Hidayati, N
JURNAL BIOLOGI INDONESIA Vol 9, No 2 (2013): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v9i2.168

Abstract

Research has been carried out through the utilization of organic fertilizer to improve the productivity of local maizecultivar originated from South Sulawesi. The study was conducted at the research station of Research Center for Biology,Cibinong Science Center. Corn seed were planted in polybag containing mixture of soil and compost, 6 and 2kg, respectively. The research were carried out by Randomized Complete Block Design arranged in factorial experimentwith four replications. The first factors are three types of local maize namely A: rice corn (pulut beras, BataraKoasa), B: waxy corn (pulut biji, Batara Kamu), C: pulut hibrida (hybrid cultivar). The second factors are 14 combinationtreatment as a mixture of LIPI organic fertilizer (Beyonic-StarTmik, Bio121, EM-121 and MegaRhizo) andanorganic NPK fertilizer. The variables observed were plant growth and production. The results showed that thehybrid cultivar had higher total corn yield productivity compared to the local one, although hybrid cultivar hassmaller plant biomass. Waxy corn (B) accession showed the weight, length and diameter of cob, and also the weightof 100 grains larger than rice corn (A). Fertilization treatments significantly affect the corn-cob productivity which isincludes the weight, length, and diameter units. Fertilization treatments such as EM-121 + (½ dose of NPK), BIO-121 + (½ dose of NPK), and Beyonic + (¼ dose of NPK) showed a good effect on plant, and it was not significantlydifferent with 100% NPK (full doses of NPK). The three corn cultivar showed different responses to fertilizationtreatments.Keywords: local corn, biofertilizer, growth, production
ISOLAT-ISOLAT KHAMIR DARI MINUMAN TRADISIONAL LARU DI NTT [Yeast Diversity Deprived from Laru, a Traditional East Nusa Tenggara Drink] Rahmansyah, M; Kanti, A
BERITA BIOLOGI Vol 4, No 5 (1999)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (630.715 KB) | DOI: 10.14203/beritabiologi.v4i5.1244

Abstract

Sixteen isolates of yeast were collected from Law fa fermented palm sap or syrup which were tapped from palm infbrescence stalk of Borassus flabellifer L). Physiological performances were tested according to Bamett method for assimilation of some sources of carbon, nitrogen and cycloheximide. Based on the percentage of discrepancy, 6 isolates have been identified. The isolates were respected in high analogical affinity and identified as Arxula adeninovoras (93%), Lipomyces tetraspows (100%), Rhodotorula mucilaginosa (97%), Saccharomyces cerevisae (95%), Schwanniomyces occidentalis var. occidentalis (96%) and Pichia anomala (99%). The yeast that usually found in food fermentation was P. anomala, R. mucilaginosa and S. cerevisiae. The others yeast have great opportunity as indigenous ones.
PEMBANGUNAN KEBUN BIOLOGI WAMENA Rahmansyah, M; Latupapua, HJD
BERITA BIOLOGI Vol 6, No 5 (2003)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (508.181 KB) | DOI: 10.14203/beritabiologi.v6i5.1186

Abstract

The richness of biological resources (biodiversity) in mountainous area of Papua is an asset that has to be preserved.Exploitation of natural resources often cause damage on those biological assets and as genetic resources.Care has to be taken to overcome the situation of biological degradation, and alternate steps had been shaped on ex-situ biological conservation. Wamena Biological Gardens, as an ex-situ biological conservation, has been established to keep the high mountain biological and its genetic resources in Papua.
AKTTVITAS SELULASE, AMILASE DAN INVERTASE PADA TANAH KEBUN BIOLOGI WAMENA Rahmansyah, M; Latupapua, HJD
BERITA BIOLOGI Vol 6, No 5 (2003)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (321.3 KB) | DOI: 10.14203/beritabiologi.v6i5.1192

Abstract

Enzymatic activities in soil as due to microbes action in organic matter degradation, lead to propose as indicators for determining soil degree enrichment.In this work, the enzymatic activities of cellulase, invertase and amylase were determined in tropical soil collected from Biological Research Station in Wamena. Result of measurement on five soil samples showed that cellulase activity occurred between 0.10 - 0.31 mg reducing sugar/g soil/hour in 2% Carboxymethylcellulose (CMC) substrate, and about 0.15 - 0.25 mg reducing sugar/g soil/hour in 0.5% Avicel substrate.Amylase and invertase assayed in 6% of amylum and 6% of sucrose substrates correspondingly; and its activities between 2.55 - 3.54 and 0.59 - 1.30 mg reducing sugar/g soil/hour, respectively. Correlation of enzymatic activities and soil organic-C content (1.35 - 2.70%) of soil layer was significant in selulase and amilase, but it was poor correlation in invertase activity.
PERTUMBUHAN DAN PRODUKSI JAGUNG PULUT LOKAL SULAWESI SELATAN YANG DITANAM DI POLIBAG PADA BERBAGAI KOMBINASI PERLAKUAN PUPUK ORGANIK Juhaeti, Titi; Hidayati, N; Rahmansyah, M
JURNAL BIOLOGI INDONESIA Vol 9, No 2 (2013): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v9i2.168

Abstract

Research has been carried out through the utilization of organic fertilizer to improve the productivity of local maizecultivar originated from South Sulawesi. The study was conducted at the research station of Research Center for Biology,Cibinong Science Center. Corn seed were planted in polybag containing mixture of soil and compost, 6 and 2kg, respectively. The research were carried out by Randomized Complete Block Design arranged in factorial experimentwith four replications. The first factors are three types of local maize namely A: rice corn (pulut beras, BataraKoasa), B: waxy corn (pulut biji, Batara Kamu), C: pulut hibrida (hybrid cultivar). The second factors are 14 combinationtreatment as a mixture of LIPI organic fertilizer (Beyonic-StarTmik, Bio121, EM-121 and MegaRhizo) andanorganic NPK fertilizer. The variables observed were plant growth and production. The results showed that thehybrid cultivar had higher total corn yield productivity compared to the local one, although hybrid cultivar hassmaller plant biomass. Waxy corn (B) accession showed the weight, length and diameter of cob, and also the weightof 100 grains larger than rice corn (A). Fertilization treatments significantly affect the corn-cob productivity which isincludes the weight, length, and diameter units. Fertilization treatments such as EM-121 + (½ dose of NPK), BIO-121 + (½ dose of NPK), and Beyonic + (¼ dose of NPK) showed a good effect on plant, and it was not significantlydifferent with 100% NPK (full doses of NPK). The three corn cultivar showed different responses to fertilizationtreatments.Keywords: local corn, biofertilizer, growth, production
PEMBANGUNAN KEBUN BIOLOGI WAMENA M Rahmansyah; HJD Latupapua
BERITA BIOLOGI Vol 6, No 5 (2003)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v6i5.1186

Abstract

The richness of biological resources (biodiversity) in mountainous area of Papua is an asset that has to be preserved.Exploitation of natural resources often cause damage on those biological assets and as genetic resources.Care has to be taken to overcome the situation of biological degradation, and alternate steps had been shaped on ex-situ biological conservation. Wamena Biological Gardens, as an ex-situ biological conservation, has been established to keep the high mountain biological and its genetic resources in Papua.
AKTTVITAS SELULASE, AMILASE DAN INVERTASE PADA TANAH KEBUN BIOLOGI WAMENA M Rahmansyah; HJD Latupapua
BERITA BIOLOGI Vol 6, No 5 (2003)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v6i5.1192

Abstract

Enzymatic activities in soil as due to microbes action in organic matter degradation, lead to propose as indicators for determining soil degree enrichment.In this work, the enzymatic activities of cellulase, invertase and amylase were determined in tropical soil collected from Biological Research Station in Wamena. Result of measurement on five soil samples showed that cellulase activity occurred between 0.10 - 0.31 mg reducing sugar/g soil/hour in 2% Carboxymethylcellulose (CMC) substrate, and about 0.15 - 0.25 mg reducing sugar/g soil/hour in 0.5% Avicel substrate.Amylase and invertase assayed in 6% of amylum and 6% of sucrose substrates correspondingly; and its activities between 2.55 - 3.54 and 0.59 - 1.30 mg reducing sugar/g soil/hour, respectively. Correlation of enzymatic activities and soil organic-C content (1.35 - 2.70%) of soil layer was significant in selulase and amilase, but it was poor correlation in invertase activity.
ISOLAT-ISOLAT KHAMIR DARI MINUMAN TRADISIONAL LARU DI NTT M Rahmansyah; A Kanti
BERITA BIOLOGI Vol 4, No 5 (1999)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v4i5.1244

Abstract

Sixteen isolates of yeast were collected from Law fa fermented palm sap or syrup which were tapped from palm infbrescence stalk of Borassus flabellifer L). Physiological performances were tested according to Bamett method for assimilation of some sources of carbon, nitrogen and cycloheximide. Based on the percentage of discrepancy, 6 isolates have been identified. The isolates were respected in high analogical affinity and identified as Arxula adeninovoras (93%), Lipomyces tetraspows (100%), Rhodotorula mucilaginosa (97%), Saccharomyces cerevisae (95%), Schwanniomyces occidentalis var. occidentalis (96%) and Pichia anomala (99%). The yeast that usually found in food fermentation was P. anomala, R. mucilaginosa and S. cerevisiae. The others yeast have great opportunity as indigenous ones.
Co-Authors A Kanti HJD Latupapua HJD Latupapua Kanti, A N Hidayati TITI JUHAETI