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All Journal MEDIA PETERNAKAN - Journal of Animal Science and Technology Tropical Animal Science Journal

P. D. M. H. Karti

Department of Nutrition and Feed Technology, Faculty of Animal Science, Bogor Agricultural University

Author-ID : 2425321

Agriculture, Biological Sciences & Forestry Energy

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Botanical Composition, Grass Production, and Carrying Capacity of Pasture in Timor Tengah Selatan District V. E. Se'u; P. D. M. H. Karti; L. Abdullah
Media Peternakan Vol. 38 No. 3 (2015): Media Peternakan
Publisher : Faculty of Animal Science, Bogor Agricultural University

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This study was conducted to analyze the botanical composition, grass production, carrying capacity, and potential production of nutrients in pasture located in Timor Tengah Selatan Regency. The experiment was conducted from February to July 2013, using field survey method. The botanical composition, grass production and carrying capacity on real condition were analyzed descriptively, while the grass production and carrying capacity based of cutting arrangement were analyzed by using randomized block factorial design with 3 altitude locations (Sub District of Mollo Utara with altitude of 1007 m above sea level; Sub District of Noebeba, 500 m ASL, and Sub District of Amanuban Selatan, 65 m ASL) x 2 cutting intervals (1 and 2 month) and 5 replications. The results showed that the grass type dominated the pasture in the Sub District of Mollo Utara, while legum type was more dominant in the pasture in the Sub Districts of Noebeba and Amanuban Selatan. The potential production of dry matter grass in Timor Tengah Selatan Regency based on real condition was 150 to 390 kg/ha/yr, this could accommodate 0.24 to 0.63 AU/ha/yr. The arrangement of cutting interval by 1 month in Mollo Utara and 2 months in Noebeba and Amanuban Selatan could increase (P<0.05) grass production and carrying capacity. The potential productions of grass nutrients were higher in Sub District of Mollo Utara, while potential production of grass dry matter was higher in Sub Districts of Noebeba and Amanuban Selatan. It was concluded that grass dry matter potential production and carrying capacity in Timor Tengah Selatan Regency were low. The arrangement of cutting interval could increase grass dry matter potential production, carrying capacity, nutrition production, and quality of nutrition.Key words: carrying capacity, grass, pasture, Timor Tengah Selatan

Forage Production and Nutrient Composition of Different Sorghum Varieties Cultivated with Indigofera in Intercropping System M. Telleng; K. G. Wiryawan; P. D. M. H. Karti; I. G. Permana; L. Abdullah
Media Peternakan Vol. 39 No. 3 (2016): Media Peternakan
Publisher : Faculty of Animal Science, Bogor Agricultural University

The experiment aimed to evaluate the production of nutrients by different varieties of sorghum grown with high valuable indigofera legume in intercropping system and to determine the suitable variety of sorghum that produced the highest nutrient in the system. The experiment was done at Jonggol Animal Science Teaching and Research Unit (UP3J) Jonggol, from November 2014 to March 2015. This experiment was conducted using completely randomized design with 2 factors (3 x 4) and 4 replications. The first factor was sorghum varieties (PATIR 3.2 (S1), PATIR 3.7 (S2), and CTY-33 (S3)). The second factor was indigofera composition (0% indigofera (I0), 30% indigofera (I1), 40% indigofera (I2), and 50% indigofera (I3)). Data were analyzed using analysis of variance and HSD test. There was no interaction among varieties of sorghum and indigofera composition. Indigofera population of up to 50% in multiple cropping system had the highest (P<0.01) dry matter content, crude protein content, ash content, total fresh weight production, total dry weight production, total crude protein production, total ash production, and carrying capacity. Sorghum variety CTY-33 planted in multiple cropping system had the highest (P<0.01) dry matter content, total dry weight production, and (P<0.05) total crude protein production. PATIR 37 sorghum variety planted in multiple cropping system had the highest (P<0.05) ash content and (P<0.01) total ash production. It is concluded that Indigofera population of up to 50% planted with different varieties of sorghum in multiple cropping system had the highest nutrient production.

Improvement of Indigofera zollingeriana Production and Methionine Content through Inoculation of Nitrogen-Fixing Bacteria P. S. Hutapea; L. Abdullah; P. D. M. H. Karti; I. Anas
Tropical Animal Science Journal Vol. 41 No. 1 (2018): Tropical Animal Science Journal
Publisher : Faculty of Animal Science, Bogor Agricultural University

Indigofera zollingeriana is a tremendous potential as a forage plant due to its high protein content. This experiment was conducted to increase production and nutrient quality of I. zollingeriana biomass, especially methionine content through inoculation of nitrogen fixing bacteria. Nine isolates obtained from nodule of I. zollingeriana were screened for 37 days in greenhouse, resulting in three desirable isolates. These three selected isolates at density of 105 cfu/mL and 107 cfu/mL were inoculated as much as 1 mL per seedling. Uninoculated plants were also grown as control treatment, i.e., positive (+ 0.05% KNO3 (w/v)) and negative. The experiment was laid out in a completely randomized design with four replicates and carried out for three months. Plant biomass was analyzed for amino acid and other nutrient contents. Moreover, nodulation activity was also observed by counting and weighting the nodules. The results showed that Bradyrhizobium sp. P8 828, Bradyrhizobium sp. PZS_A08, and Roseomonas sp. CMS4Y-2-2 significantly increased shoot production. Subsequent experiment showed that plant inoculation with Bradyrhizobium sp. PZS_A08 at 105 cfu/mL significantly increased dry matter content. Inoculation with Bradyrhizobium sp. PZS_A08 and Roseomonas sp. CMS4Y-2-2 at 107 cfu/mL produced higher crude protein contents that were better than the application of nitrogen fertilizer. Inoculation treatment with Bradyrhizobium sp. P8 828 at 105 cfu/mL was the most effective in improving methionine content. It is concluded that production and quality of biomass obtained from inoculation treatments were comparable to the application of inorganic N-fertilizer.

Evaluation of Arbuscular Mycorrhizal Fungi Inoculum on Production and Nutrient Content of Pennisetum purpureum P. D. M. H. Karti; I. Prihantoro; M. A. Setiana
Tropical Animal Science Journal Vol. 41 No. 2 (2018): Tropical Animal Science Journal
Publisher : Faculty of Animal Science, Bogor Agricultural University

Land for forage planting is mainly on marginal land such as acid soil. However, the constraint is the low levels of phosphorus (P) that can inhibit forage production. Arbuscula mycorrhizal fungi has been known as a biological fertilizer because the fungi can help the absorption of phosphorus (P) on the root so that can improve the forage production and quality of nutrients. This study was aimed to utilize and evaluate the use of arbuscular mycorrhizal fungi inoculum in forage production and nutritive value of Pennisetum purpureum. The experiment used a completely randomized design with two factors (2 x 4) and 4 replications. The first factor was type of AMF inoculum (A and B) and the second factor was doses of AMF (D1= 0.5 kg/planting hole, D2= 1 kg/planting hole, D3= 1.5 kg/planting hole, and D4= 2 kg/planting hole). Control treatment was carried out separately. The result showed that the highest shoot dry weight production was on AD2 and significantly different (P<0.05) from BD1 and control. There was no interaction between type and dose of inoculum on shoot dry weight production and nutrition value. The inoculum A significantly increased (P<0.05) shoot dry weight production (34.04%), crude protein content (10.21%), phosphorus uptake (40%), N content (10.53%), N uptake (38.10%), and protein production (40.15%) of P. purpureum, compared to inoculum B. It can be concluded that AMF inoculum type A was the best inoculum for forage production.

Co-Authors I. Anas I. G. Permana I. Prihantoro K. G. Wiryawan L. Abdullah M. A. Setiana M. Telleng P. S. Hutapea V. E. Se'u

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