Iwan Herdiawan
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Productivity of Indigofera sp. at different drought stress level and defoliations interval Iwan Herdiawan; E Sutedi
Jurnal Ilmu Ternak dan Veteriner Vol 17, No 2 (2012): JUNE 2012
Publisher : Indonesian Center for Animal Research and Development (ICARD)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (59.535 KB) | DOI: 10.14334/jitv.v17i2.690

Abstract

This study was aimed at determining the interaction between drought stress and defoliation interval on the productivity of Indigofera sp. This study was done based on Complete Randomized Design (CRD) 3x2 factorial, the first factor was without drought stress (100% FC), medium drought stress (50% FC), and severe drought stress (25% FC), and the second factor was the defoliation interval of 60 day and 90 days, each treatment was repeated 5 times. Observed variables were biomass production, and leaf/stem ratio. Results showed that there were significant interactions (P < 0.05) between drought stress and defoliations interval on the productivity of Indigofera sp. The highest biomass production of Indigofera sp. (424.47 g/plant) was obtained from treatment of wihtout dought stress (100% FC) combined with defoliations interval of 90 days, while the lowest (184.55 g/plant) was reached at treatment of severe drought stress (25% FC) and depoliations interval of 60 days. The highest leaf/stem ratio (1.47) was reahced at treatment severe drouht stress (25% FC) and depoliations interval of 60 days and the lowest (1.05) was reached at combination treatment of drought stress and depoliations interval of 90 days. Defoliations interval of 90 days showed higer biomass production than depoliations interval of 60 days. Key Word: Drought Stress, Depoliation, Indigofera sp
Morphological characteristics of forage crops indigofera zellongeriana at different levels drought stress and interval pruning Iwan Herdiawan; L Abdullah; D Sopandie; P.D.M.H Karti; N Hidayati
Jurnal Ilmu Ternak dan Veteriner Vol 17, No 4 (2012): DECEMBER 2012
Publisher : Indonesian Center for Animal Research and Development (ICARD)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (128.263 KB) | DOI: 10.14334/jitv.v17i4.693

Abstract

The objectives of this experiment was to evaluate the effect of drought stress and defoliation interval on shoot and root morphologic characteristic of Indigofera zollingeriana. The experiment was arranged in a completely randomized design with two factors and four replications. The first factor consisted of 3 level of drought stress i.e: 100% field capacity (FC) (control), 50% FC, and 25% FC. The second factor comprised of 3 defoliation interval were interval defoliations of 60, 90 and 120 days. The observed variables were shoot, root dry weight, root/shoot ratio and root length. Data were analyzed by ANOVA and the differences between treatments were tested by LSD. The results shows that there were interactions (P < 0,05) between drought stress and defoliations interval on shoot dry weight, while root dry weight, root/shoot ratio, and root length was not. Drought treatment significantly (P < 0,05) decreased shoot, root dry weight, but increase of root/shoot ratio and root length. Defoliation interval significantly affected (P < 0,05) on shoot dry weight, but not on root dry weight, root/shoot ratio, and root length. Key Words: Indigofera zollingeriana, Drought Stress, Defoliation Interval, Shoot And Root Morphology
Outermost Small Islands in Indonesia for Quarantine Area and Livestock Development Endang Sutedi; Iwan Herdiawan; Eko Handiwirawan
WARTAZOA, Indonesian Bulletin of Animal and Veterinary Sciences Vol 27, No 4 (2017): December 2017
Publisher : Indonesian Center for Animal Research and Development

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1189.032 KB) | DOI: 10.14334/wartazoa.v27i4.1692

Abstract

Indonesia has about 17,506 islands consisting of large and small islands. Outermost small islands are direct boundary of Indonesia with neighboring countries. These outermost islands have the potency to be used as quarantine area and for livestock development, especially beef cattle in order to support the development of food security of meat. Some of outermost islands are Jemaja island in Riau Province, Singkil island in Aceh Province and Naduk island in Bangka Belitung Province. Criteria to determine quarantine area and livestock development are availability of natural resources (fresh water and forage), free of contagious diseases, human resources, market access, and transportation. This paper describes about the condition and forage availability in those three islands and their surrounding area. Those islands have potential variety of forage with different carrying capacities. Type of grass that has been adapted in the outermost islands are Paspalum conjugatum, Axonopus compressus, Cynodon dactylon, Cynodon plectostachyus, and Panicum repens.
Productivity and Utilization of Leguminous Tree Indigofera zollingeriana on Dry Land Iwan Herdiawan; Rantan Krisnan
WARTAZOA, Indonesian Bulletin of Animal and Veterinary Sciences Vol 24, No 2 (2014): JUNE 2014
Publisher : Indonesian Center for Animal Research and Development

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (151.589 KB) | DOI: 10.14334/wartazoa.v24i2.1051

Abstract

Indigofera is well known as tarum plant, has about 700 species, including Indigofera zollingeriana. These plants are leguminous species that have high nutrient content and production as well as tolerant to abiotic stresses. This plant originated in tropical Africa, Asia, Australia, and North and South America, then spread to arid zone of Africa and Asia. In early 1900, it was brought by Europeans colonial to Indonesia. Indigofera can grow well at altitudes between 0-2200 m above sea level, with rainfall between 600-3000 mm/year. It can be used as a fodder crop because it has high nutrient content and production. It can be harvested at the age of eight months with an average production of 2,595 kg of fresh biomass/tree, with a total production of fresh approximately 52 tons/ha. Indigofera zollingeriana has crude protein content of 27.60%; neutral detergent fiber (NDF) 43.56%; acid detergent fiber (ADF) 35.24%; calcium (Ca) 1.16%; phosphorous (P) 0.26%; in vitro-dry matter digestibility (IVDMD) 67.50%; organic matter digestibility (IVOMD) 60.32%; 0.08% tannins and 0.41% saponin. Additionally I. zollingeriana is often used as green manure, cover crop in plantation areas, fabric dyeing and therapeutic herbs. Key words: Indigofera zollingeriana, characteristics, usage, dry land
The growth of tree legume fodder Indigofera zollingeriana at various levels of drought stress treatment Iwan Herdiawan
Jurnal Ilmu Ternak dan Veteriner Vol 18, No 4 (2013): DECEMBER 2013
Publisher : Indonesian Center for Animal Research and Development (ICARD)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (175.845 KB) | DOI: 10.14334/jitv.v18i4.332

Abstract

The research aimed to determine growth of the forage tree legume Indigofera zollingeriana on different drought stress treatments. The study was done based on completely randomized design (CRD), with 12 plants as replications. The treatment consisted of three levels of drought stress, ie control (100% field capacity=fc), moderate drought stress (50% fc), and severe drought stress (25% fc). The variables observed were plant height, stem diameter, number of branches, biomass production, shoot dry weight, root dry weight, shoot/root ratio, and root length. The data were analyzed by covariance analyzed (ANOVA) and the differences between the treatments were tested by LSD. The results showed that moderat drought stress (50% fc) and severe drought stress (25% fc) significantly (P < 0.01) decreased length and height of plant, stem diameter, number of branches, biomass production, shoot dry weight, root dry weight, but not shoot or root ratio. Key words: Indigofera zollingeriana, Drought Stress, Growth