Jurnal Ilmiah Pertanian https://journal.unilak.ac.id/index.php/jip <p>Jurnal Ilmiah Pertanian (JIP) is an open-access journal that publishes original research articles on the advance of agriculture and the use of land resources throughout the world.JIP is a triannual publication journal, published every March, July, and Dec. It is published electronically via the journal website. ISSN (Print) 1829-8346 ISSN (Online) 2502-5988</p> en-US indra.purnama@unilak.ac.id (Indra Purnama) prnm_indra@yahoo.com (Indra Purnama) Tue, 23 Aug 2022 00:23:35 +0000 OJS 3.1.2.4 http://blogs.law.harvard.edu/tech/rss 60 Co-infection of two Ganoderma boninense strains on oil palm seedlings https://journal.unilak.ac.id/index.php/jip/article/view/10497 <p><em>Ganoderma boninense</em> is the basal stem rot disease (BSR) pathogen that devastates oil palm plantations. Disease infection generally occurs by a single strain of <em>G. boninense,</em> or co-infection of two strains arises as revealed by somatic incompatibility. This study aimed to determine the effects of co-infection of two somatically incompatible <em>G. boninense</em> strains on the BSR disease of oil palm seedlings. Two strains of <em>G. boninense</em> were from 2 oil palm plantations and had different aggressiveness. Co-infection of two <em>G. boninense</em> strains was performed by inoculating the <em>Ganoderma </em>rubber wood blocks to the 3-month-old oil palm seedling and examined for 7 months. The results showed that co-infection with two <em>G. boninense</em> strains had similar disease symptoms, decreased disease severity (score 1.5 compared to 2.0 for a single aggressive strain), and similar seedling growth retardation by the single aggressive strain. Higher fungal colonization (92%) of oil palm roots was exhibited in the co-infection compared to 85‒86% colonization of a single strain infection. This study revealed that co-infection with two somatically incompatible strains might favor host colonization by<em> G. boninense</em>.</p> Rahmad Fadli, Suwandi Suwandi, Nurhayati Damiri Copyright (c) 2022 Jurnal Ilmiah Pertanian https://creativecommons.org/licenses/by-sa/4.0 https://journal.unilak.ac.id/index.php/jip/article/view/10497 Sun, 11 Sep 2022 14:10:06 +0000 Heavy metal contamination status in the soil-water-rice system near coal-fired power plants in Cilacap, Indonesia https://journal.unilak.ac.id/index.php/jip/article/view/10568 <p>Indonesia is intensively developing plenty of coal-fired power plants to support electricity demand growth. Some research showed the utilization of coal as an electrical energy source may produce anthropogenic contaminants (ACs) that can bioaccumulate in plants. This research was carried out to investigate the severity of the heavy metals contamination problem, for instance, arsenic (As), cadmium (Cd), mercury (Hg), and lead (Pb) in soil, water, rice, and rice bran using ICP-MS and ICP-OES. This research demonstrated the metal contamination levels of arsenic, cadmium, mercury, and lead in the soil, water, rice, and rice bran were below the maximum limit, according to SNI, Codex, and FAO/WHO. However, only a rice sample showed the lead (Pb) level above the safe limit. Coal-fired power plant activities in Cilacap did not indicate clear evidence of soil, water, rice, and bran heavy metal contamination. Therefore, transformation to green energy (e.g., solar and geothermal) is highly recommended to minimize the potential health risks of environmental pollution due to the coal-fired power plant's by-product activities.</p> Febbyandi Isnanda Pandiangan, Kholis Abdurachim Audah Copyright (c) 2022 Jurnal Ilmiah Pertanian https://creativecommons.org/licenses/by-sa/4.0 https://journal.unilak.ac.id/index.php/jip/article/view/10568 Mon, 22 Aug 2022 23:52:37 +0000 Perkecambahan dan pertumbuhan benih jati (Tectona grandis Linn. f) dalam merespon perbedaan konsentrasi dan perlakuan waktu perendaman benih dalam asam klorida https://journal.unilak.ac.id/index.php/jip/article/view/10512 <p>Teak is a wood-producing plant that is in great demand by the community. However, teak seeds are challenging to germinate due to dormancy, so special treatment is needed before planting. This research aimed to determine the effect of hydrochloric acid and soaking time on breaking the dormancy of teak seed to improve its viability. The first factor was the concentration of hydrochloric acid with four treatment levels, i.e., 0 M, 0.5 M, 1 M, and 1.5 M. The second factor was submerging time which was 12, 18, and 24 hours. Parameters observed included the percentage of germination, maximum growth potential, vigor index, germination rate, growth simultaneity, plant height, number of leaves, and wide leaf. The data obtained were analyzed statistically using ANOVA and followed the DMRT test with a level of 5%. The results showed that hydrochloric acid significantly affected the percentage of germination, maximum growth potential, vigor index, germination rate, growth simultaneity, plant height, and width of the leaf. In addition, soaking time treatment had a significant effect on the wide leaf. The research concluded that hydrochloric acid 0.5 M and 12 hours of soaking time increased the growth of teak seed compared to the control by 29.64% on a percentage of germination, 29% on germination rate, and 41.66% on growth simultaneity.</p> Rulia Ervina Dewi, Florentina Kusmiyati, Syaiful Anwar Copyright (c) 2022 Jurnal Ilmiah Pertanian https://creativecommons.org/licenses/by-sa/4.0 https://journal.unilak.ac.id/index.php/jip/article/view/10512 Wed, 21 Sep 2022 04:34:03 +0000 Pengaruh hormon alami dan lama perendaman benih cabai merah (Capsicum annum L.) kedaluwarsa terhadap perkecambahan, pertumbuhan, dan produksinya https://journal.unilak.ac.id/index.php/jip/article/view/10569 <p>Red chili (<em>Capsicum annum</em> L.) &nbsp;is a vegetable that has high economic value. However, red chili production has decreased because of seed deterioration, such as expired seeds. Seed invigoration attempts to maintain seed germination ability when it has deteriorated. Extracts of onion and banana weevil can be used for invigoration. The research aimed to know the effect of various natural hormones, soaking time, and interaction of the two treatments of expired red chili seeds on germination, growth, and production. The research used a factorial, completely randomized design (CRD), which consisted of the type of natural hormones for soaking expired red chili seeds, aquadest as a control, onion extract 25%, banana weevil extract 25%, and onion extract 25% + banana weevil 25%; and soaking time for expired red chili seeds, i.e., 4 hours, 8 hours and 12 hours. Based on the result, The effect of soaking expired red chili seeds on natural hormones significantly impacted maximum growth potential, germination, growth rate, and simultaneous growth. Meanwhile, there were no significant effects on the vigor index, plant height, number of leaves, flowering age, harvest age, number of fruits per plant, fresh weight per plant, and fruit length.&nbsp; In addition, the treatment for a soaking time of expired red chili seeds for up to 12 hours had no significant effect on all observation parameters.</p> Noor Fitriya Mirta Liana, Syaiful Anwar, Florentina Kusmiyati Copyright (c) 2022 Jurnal Ilmiah Pertanian https://creativecommons.org/licenses/by-sa/4.0 https://journal.unilak.ac.id/index.php/jip/article/view/10569 Fri, 23 Sep 2022 13:50:14 +0000 Evaluasi keragaman dan kemajuan seleksi kacang panjang (Vigna unguiculata (L.)) generasi F6 berdasarkan karakter agronomi https://journal.unilak.ac.id/index.php/jip/article/view/10499 <p>Red or purple yardlong bean is one type of yardlong bean that is starting to be developed but has a bitter taste due to its antioxidant content. Improvements in the quality of red or purple yardlong beans can be achieved through crossbreeding. The effective selection of crossbreeding can be seen from the diversity and selection progress. The research purpose was to assess genetic diversity and estimate the value of the selection progress of yardlong beans (<em>Vigna unguiculata</em> (L.)) F6 generation from a crossing between Fagiola IPB and Aura Hijau. The research was conducted at the Agrotechnopark, Diponegoro University, Semarang. The study was arranged in a completely randomized design (CRD) with an unequal number of replications. The results showed that all characters except the number of seeds per plant had low genetic diversity. The high heritability and value of genetic advances were found in antioxidant content. All characters had selection progress except for fresh harvest age and weight of 100 seeds. Partial correlation analysis showed a positive correlation between the character number of dry pods per plant with the number of leaves, the number of seeds per plant, seed weight per plant, and antioxidant content, also the character number of seeds per plant with several leaves and seed weight per plant. A negative correlation showed between the character number of leaves with seed weight per plant and antioxidant content and the character number of seeds per plant with antioxidant content.</p> Nurul Shintawati, Syaiful Anwar, Florentina Kusmiyati Copyright (c) 2022 Jurnal Ilmiah Pertanian https://creativecommons.org/licenses/by-sa/4.0 https://journal.unilak.ac.id/index.php/jip/article/view/10499 Fri, 30 Sep 2022 14:42:18 +0000 Optimalisasi metode uji perkecambahan dan media tanam pada perkecambahan biji anuma (Artemisia annua L.) https://journal.unilak.ac.id/index.php/jip/article/view/10514 <p>Annual wormwood (<em>Artemisia annua</em> L.) is a traditional Chinese medicinal plant belonging to a group of tiny seeds. The small size of the seeds requires the appropriate germination test method and medium. This study aimed to find the best seed germination test methods and growing media; also the best combination of methods and germination media for determining the viability and vigor of <em>A. annua</em> seeds. The experiment used a factorial randomized block design repeated three times, given two treatments: the type of method and the media. The methods used were the top-of-the-paper test (UDK), the between-paper test (UAK), and the rolled paper and erected-in-plastic test (UKDDdp). The media used included garden soil (control), straw paper, filter paper, CD paper, tissue towel, and soft tissue, so there were 15 treatment combinations and one control. Data analysis used a SAS and DMRT follow-up test with a 5% significance level. The results showed that of the observation variables for germination percentage (DB) and growth speed (K<sub>CT</sub>), the UDK test method became the best method. As a result of the main effect of media, filter paper became the best medium, while straw paper became the lowest after soil. In the seed viability testing, there was no interaction for a combination of methods and media, but only the UDK combination of filter paper reached DB=80%. Meanwhile, there was an interaction in the vigor test of the simultaneous growth (K<sub>ST</sub>), and the best combination was to use the UDK method with towel tissue and soft tissue.</p> Murtiwulandari, Endang Pudjihartati Copyright (c) 2022 Jurnal Ilmiah Pertanian https://creativecommons.org/licenses/by-sa/4.0 https://journal.unilak.ac.id/index.php/jip/article/view/10514 Mon, 17 Oct 2022 11:10:56 +0000