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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Tropical Animal Science Journal

A. Ernawati

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Author-ID : 260595

Agriculture, Biological Sciences & Forestry Economics, Econometrics & Finance Energy

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Articles

Silage Quality, Rumen Fermentation Characteristics, and Nutrient Digestibility of Sorghum bicolor cv. Samurai 1 Harvested at Different Maturity Stages Treated with Fibrolytic Enzyme Ratnaningtyas, F. A.; Abdullah, L.; Kumalasari, N. R.; Ernawati, A.; Ridla, M.; Diapari, D.; Karti, P. D. M. H.
Tropical Animal Science Journal Vol. 48 No. 3 (2025): Tropical Animal Science Journal
Publisher : Faculty of Animal Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5398/tasj.2025.48.3.211

The Samurai 1 variety is a genetically mutated strain with superior agronomic characteristics and enhanced nutrient content. This study aimed to evaluate the effect of harvest maturity stages and fibrolytic enzyme (Sunsonzyme) treatment on the nutrient value, fermentative quality, and nutrient digestibility of Sorghum bicolor cv. Samurai 1 silage. The silage quality was assessed using a completely randomized design with a 3 x 3 factorial arrangement. Sorghum was harvested at three different maturity stages, namely 85, 90, and 95 days, with fibrolytic enzyme added at 0%, 0.025%, and 0.05% of the dry matter. In vitro fermentability and digestibility were evaluated using a randomized block factorial design, which was also based on the same three harvest stages and enzyme levels. Observed variables included the nutrient composition of the sorghum, physical characteristics and nutrient content of the silage, as well as in vitro fermentability and digestibility. The results showed a significant interaction between harvest maturity and enzyme level on lactic acid production and total volatile fatty acid (VFA). Harvest age significantly affected (p<0.05) all variables, while the treatment of fibrolytic enzyme significantly increased ammonia (NH₃) and total VFA concentrations, as well as reduced the fiber fraction of the silage (p<0.05). The harvest age of 90 days showed the best quality in terms of nutrients, silage, and rumen fermentability. The addition of enzyme levels up to 0.05% improved the fermentative quality of silage, reduced fiber fractions, and enhanced rumen fermentability.

Catatan Penelitian (Research Note) Production of Seedling of Carica papaya L. by Carica parviplora (A.DC) Solms. Interspecific Hybrids Using Embryo Rescue Ernawati, A.; Drew, R. A.; Adkins, S. W.; Godwin, I. D.
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 32 No. 1 (2004): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

A method of embryo rescue to produce seedlings of Carica papaya x Carica parviflora (A. DC) Solms. interspecific hybrids has been developed. Liquid medium of 0.5 Murashige and Skoog nutrients containing kinetin (0.25 µM) and NAA (0.25 µM) was the best medium to germinate the hybrids and produced the biggest leaf area index of the hybrids. Liquid medium of 0.5 MS nutrients containing kinetin (1.0 µM) and NAA (0.25 µM) produced the highest number of leaves of the hybrids, and produced the longest length of hypocotyl of the hybrids.

The Micropropagation of Bananas Ernawati, A.; Rubbyanto, ,; Gunawan, L. W.; Purwito, A.; Sukmana, D.
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 28 No. 3 (2000): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

A study to obtain a method of rapid clonal propagation of bananas was done. The investigated cultivars were Pisang Mas (AA), Pisang Ambon Kuning (AAA), Pisang Barangan (AAA), and Pisang Rajabulu (AAB). The basal medium was MS, the treatment were IAA (0 - 4.5 mg/l) and BAP (0 - 10.5m g/l), and the explants were suckers from the field. The experiment was designed with Randomized complete design, and repeated in 10 bottles for each treatment. The result of experiment showed that IAA alone significantly induced shoot multiplication. The role of IAA could be replaced by BAP. Cultivars, IAA and BAP interacted each other to induce shoot multiplication. The best treatment to induce shoot multiplication was the combination of IAA and BAP, and the concentration depend on the cultivar. After 8 weeks, the highest number of axilar shoots (12.6 shoots/bottles)w as obtained by Pisang Ambon (AAA), followed by Pisang Mas (AA) 8.2 shoot/bottle, Pisang Barangan (AAA) 7.8 shoot/bottle, and Pisang Rajabulu (AAB) 7.6 shoot/bottle. Key words: Banana, Micropropagation

INITIATION AND PROLIFERATION OF PAPAYA (Carica papaya L.) SOMATIC EMBRYOS FROM ZYGOTIC TISSUE Ernawati, A.; Adkins, S. W.; Drew, R. A.; Godwin, I. D.
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 27 No. 3 (1999): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The stufy on the initiation and proliferation of somatic embryos from papaya (C. papaya L.) zygotic embryo explants was undertaken. Best results regarding initiation of embryogenic callus formation was obtained with 90 days after pollination (DAP) zygotic embryos. The medium were liquid and solid MS (0.5) medium containing glutamine (2.7 mM), 2,4-D (9 µM) and sucrose (170 mM) at 6 and 10 weeks after the start of the cultures. In this condition 90% explains produced embryogenic callus formation. The best medium for proliferation of somatic embryos was a liquid MS (0.5) medium containing glutamine (2.7 mM), sucrose (170 mM) in the presence of 2,4-D (9 µM). Using this medium, somatic embryos proliferated three times higher within two weeks.

Co-Authors , Rubbyanto A. Purwito D. Diapari, D. D. Sukmana I. D. Godwin L. Abdullah L. W. Gunawan Muhammad Ridla N. R. Kumalasari P. D. M. H. Karti R. A. Drew Ratnaningtyas, F. A. S. W. Adkins

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