Judul: Tanggap daya tumbuh dua klon stum okulasi dini karet terhadap media kemasan pada pengiriman jarak jauh
Abstrak: Alternative stump procurement for distant shipping could be provided with young budded stumps. Various obstacles causing mechanical injuries need to be eliminated by proper wrapping media. The aim of this research was to study response of young budded rubber stumps to various wrapping media, clones and delay planting time (representing long distance transportation). Research was conducted at IPB Research Station, Cikabayan, Darmaga, Bogor from May until August 2007. Three factor factorial experiment was arranged on Split Split Plot Design with 4 replications. First factor (as main plot): 2 and 7 day-delay planting. The second factor (as sub plot): young budded clones of PB 260 and PB 330. The third factor (as sub sub plot): was wrapping media: no wrapping, cocopeat and newspaper. Least Significance Difference Analysis was performed whenever there was a significant effect of the factor as shown by ANOVA. Observed parameters were percentage of budbreak and viability of stump; length, diameter and dry weight of stem; leaf number and leaf area; number of and length of lateral roots and total root dry weight. Delaying on time of planting from 2 to 7 days did not decrease the growth of seedling, although budbreak of 7 day delay of planting were earlier that the 2 day delay of planting. Slower budbreak on 2 day delay of planting was no longer shown a significant effect on shoot growth at the end of experiment. This research also shown that the seedling with later budbreak were able to reach the same level of growth with the seedling with earlier budbreak. This because of they were supported by a better roots for absorbing soil moisture and nutrient for shoot growth.
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Judul: Pengaruh pemberian ZPT (Rootone-F) terhadap pertumbuhan stek Duabanga moluccana, Blume.
Abstrak: INTRODUCTION Insufficient supply of raw materials to support wood based industries in Indonesia cause of the changes on orientation for wood supply from natural forest to plantation forest in developing fast growing tree species. Duabanga mollucana Blume, is an Indonesian native fast growing tree species that have good characteristic as raw materials for wood based industries. Vegetative propagation can be done to this species besides their ability to be propagated from seed. Shoot and stem cuttings are alternative ways to obtain qualified seedlings in appropriate amounts and timely manner. Plant growth regulator treatment was expected to increase cutting's survival rate and rooting percentage. Objective of this research was to determine the effect of plant growth regulator on the growth of shoot and stem cutting of Duabanga moluccana. This research would be useful to provide information for the production for high quality seedlings. MATERIAL AND METHOD This research was carried out on green house with KOFFCO system (Komatsu-Forda Fog Cooling System) at Balai Penelitian dan Pengembangan Hutan dan Konservasi Alam, Gunung Batu, Bogor, West Java. from August to october 2010. Materials used in this research were shoot and stem of Duabanga seedlings from selected mother trees (M07) from SEAMEO BIOTROP, Rootone-F, Dithane M-45, rice husk, cocopeat, and zeolite. The experimental design in this research was completely randomized design with 2 factors and 3 replicates. The first factor was source of cutting material (shoot and stem) and the second factor was concentration of plant growth regulator (0 ppm, 500 ppm, 1000 ppm, and 1500 ppm). Growth parameters observed were (1) survival rate, (2) rooting percentage, (3) number of roots, (4) root length, (5) root fresh weight and dry weight (6) shoot fresh weight and dry weight (7) shoot-root ratio. Data was processed with analysis of variance then followed by fisher's LSD test. RESULT AND CONCLUSION Analysis of variance was conducted to explore the impact of all factors on growth parameters, shoot cutting was found to be the most significantly different related to each growth parameters observed; those were (1) survival rate, (2) rooting percentage, (3) number of roots, (4) root length, (5) root fresh weight and dry weight (6) shoot fresh weight and dry weight (7) shoot-root ratio , beside that, stem cuttings was not significantly different related to those growth parameters observed. Rooting percentage on shoot cuttings was 82% and stem cuttings was 0%. Plant growth regulator treatments were not significantly affected cuttings, because control (0 ppm) on shoot cuttings showed high rooting percentage value (77%), followed by 500 ppm (80%), 1500 ppm (83%), and 1000 ppm (87%). Interaction between source of materials and concentration of plant growth regulators was also not significantly related on each growth parameters observed because all of stem cutting could not survive during root primordial initiation, shoot cuttings was also not significantly different related to those growth parameters observed, because control (0 ppm) on shoot cuttings produced significant survival rate (77 %).
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Judul: Trichomonas Gallinae Penyebab Trichomonosis Pada Unggas
Abstrak: Trichomonas gallinae adalah protozoa yang bergerak aktof dengan keempat flagella yang mempunyai layar dan pada salah satu sisinya terdapat membran seperti sirip ikan yang berombak. Spesies dari genus Trichomonas ini mempunyai arti penting pada unggas, karena dapat menyebabkan infeksi pada alat pencernaan bagian atas.
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