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All Journal Agrosains: Jurnal Penelitian Agronomi Biosaintifika: Journal of Biology & Biology Education Agrotechnology Research Journal Journal of Biodiversity and Biotechnology

Ahmad Yunus

Department of Agrotechnology, Faculty of Agriculture, Universitas Sebelas Maret

Author-ID : 3764253

Agriculture, Biological Sciences & Forestry

Published : 13 Documents Claim Missing Document

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Jarak Tanam Berbeda pada Uji Daya Hasil Lima Varietas Jagung Hibrida Putri Dewangga Maharani; Ahmad Yunus; Dwi Harjoko
Agrotechnology Research Journal Vol 2, No 2 (2018): Agrotechnology Research Journal
Publisher : Perkumpulan Agroteknologi/Agroekoteknologi Indonesia

Maize (Zea mays L.) is the second most important cereal crop of Indonesia after rice. The productivity of corn in Central Java province in 2015 was increased that considered as relatively low. Maize productivitiy needs to be improved to supply the requirement of people through of plant spacing and use the hybrid maize varieties. The aims of study was to determine the effectiveness level of plant spacing, to test the best hybrid maize varieties, and test the combination of two treatments to optimize the yield potential hybrid maize. This study has been conducted from June until October 2017, at Desa Srimartani, Kecamatan Piyungan, Kabupaten Bantul, Daerah Istimewa Yogyakarta. This study was arranged in Split Plot Design consisting of two factors that have been researched, varieties (ABCD, EFGH, NK6172, P27 and DK77) and plant spacing (70 x 20 cm, 75 x 20 cm, and 75 x 25 cm). The results show that treatment of varieties mostly can increase all of variable analysis but there is no interaction on both treatment except plant height, fresh and dry biomass weight. Variable of plant height, tasseling and silking, cob weight with husk, cob weight without husk, kernel seeds weight per plot, 100 seeds weight, yields per hectare show that the highest average is variety of P27. While treatment of plant spacing has no effect because the interval between treatments plant spacing is too close therefore it shows insignificantly different result. The highest dry kernel product on variety treatment P27 (8,82 ton ha-1), followed by DK77 (8,53 ton ha-1), ABCD (8,50 ton ha1), NK6172 (8,34 ton ha-1), and EFGH (7,13 ton ha-1).

Keragaan Anggrek Persilangan ♀ Vanda Celebica X ♂ Vanda Dearei Hasil Iradiasi Sinar Gamma Sri Hartati; Ahmad Yunus; Fajar Nugroho
Agrotechnology Research Journal Vol 1, No 1 (2017): Agrotechnology Research Journal
Publisher : Perkumpulan Agroteknologi/Agroekoteknologi Indonesia

Variation on orchid is an advantage that allows plant as breeding material. Orchid in plant breeding has a target to increase plant genetic diversity character who favored by the consumer. Efforts to increase genetic diversity among others by artificial mutation using gamma ray irradiation. This research aims to study the influence of gamma ray irradiation dose against the performance of morphology and growth of crossbred orchids ♀Vanda celebica x ♂Vanda dearei. Research using completely randomized design single factor that is dose gamma ray irradiation 0 Gray, 10 Gray, 20 Gray, 30 Gray, 40 Gray and 50 Gray. Data were analyzed descriptively, compared plant irradiation treatments with control plants to determine the effect of irradiation on morphology and growth plant. The results showed dose irradiation treatment increased the diversity of plant height, leaf amount, leaf length, leaf color changes, the amount and length of roots. 10 Gray dose irradiation increases as height and length plant leave. 30 Gray dose irradiation increase in the number of leaves. Leaf color change occurs at 20 irradiation treatments Gray and 50 Gray.

Hasil Padi Hibrida Genotipe T1683 pada Berbagai Dosis Pupuk NPK Agastya Putra Pradipta; Ahmad Yunus; Samanhudi Samanhudi
Agrotechnology Research Journal Vol 1, No 2 (2017): Agrotechnology Research Journal
Publisher : Perkumpulan Agroteknologi/Agroekoteknologi Indonesia

Hybrid rice has genetic traits such as sturdy stems, long and bushy dwarfs, short lifespan of 110-145 days, has large number of tillers, and leaves are dark green. Productivity of hybrid rice reached 6-12 tons-1ha. To obtain maximum production, hybrid rice varieties should be planted on fertile land, nutrients must be available, adequate irrigation, integrated pest management, and crop management should be done well. Efforts that can be done is to provide a balanced fertilizer, one with the use of appropriate doses of NPK fertilizer. The research was conducted in Gedangan Village, Grogol District, Sukoharjo Regency in May to August 2017 using Randomized Complete Block Design (RCBD) design with 2 factors of treatment, is the dosage of NPK fertilizer and rice varieties and replicates 4 times. The results showed that the treatment of various doses of NPK fertilizers and rice varieties increased the results of all observation variables, except in the variable of plant height and yield per harvest. While the interaction between the two treatments almost increased the results of all observation variables except for plant height and yield per harvest.

Pertumbuhan dan Kandungan Asam Oleanolat Rumput Mutiara (Hedyotis Corymbosa) pada Berbagai Dosis Pupuk Kandang Sapi dan Pupuk Organik Cair Glora Jayantie; Ahmad Yunus; Bambang Pujiasmanto; Yuli Widiyastuti
Agrotechnology Research Journal Vol 1, No 2 (2017): Agrotechnology Research Journal
Publisher : Perkumpulan Agroteknologi/Agroekoteknologi Indonesia

Research on the growth and oleanolic acid content of pearl grass (Hedyotis corymbosa) in experimentall field of Medicinal Plants and Traditional Medicines Research and Development Center (B2P2TOOT), Tanjungsari Village, Tegal Gede Village, Karanganyar and B2P2TOOT laboratory, Tawangmangu, Karanganyar. The research has been conducted in August to November 2017. The purpose of this research is to know the dosage of cow manure and liquid organic manure which has the most influence to the growth and the oleanolic acid content of pearl grass. The experiment was designed in a randomized complete block design with twelve treatments and three repication. The observed data analyzed using variance analysis with 5% level then if there was a significant difference in the continued test with Duncan’s Multiple Range Test (DMRT). The results showed that the use of cow manure at doses of 0 kg-1m2, 4,6 kg-1m2, 6,1 kg-1m2 and 7,6 kg-1m2 did not give increase to all observation variables. The use of POC dose 0 ml-1liter, 5 ml-1liter and 10 ml-1liter did not give increase to all observation variables. All given treatments may show that oleanolic acid is present in pearl grasses.

Co-Authors Agastya Putra Pradipta ARI SUSILOWATI Asty Pratista Magdhalena Bambang Puji Asmanto Bambang Pujiasmanto Dwi Harjoko Fajar Nugroho Glora Jayantie Hadiandra Harfiansyah Herjuna Praba Wisesa Herlina Mega Puspitasari Himawan Joko Riswanda Muji Rahayu Pricillia Galuh Pusparini Putri Dewangga Maharani Raden Dirgori Kuneng Brojokusumo Rahmanto Rahmanto Samanhudi Samanhudi Sri Hartati Sri Indah Rahmawati Sulandjari Sulandjari Yuli Widiyastuti

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