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All Journal Journal of Tropical Soils AGRIVITA, Journal of Agricultural Science Jurnal Agro Planta Tropika JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Jurnal Penelitian Pertanian Terapan Jurnal Komputasi SAINS TANAH - Journal of Soil Science and Agroclimatology Jurnal Agrotek Tropika TheJournalish: Social and Government Jurnal Agrotropika Fruitset Sains : Jurnal Pertanian Agroteknologi Jurnal Inovasi Pembangunan Open Science and Technology Jurnal Natural BULLET : Jurnal Multidisiplin Ilmu AMMA : Jurnal Pengabdian Masyarakat Jurnal Pengabdian Fakultas Pertanian Universitas Lampung
Paul Benyamin Timotiwu
Fakultas Pertanian Universitas Lampung
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Transportation Other

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Shallot growth and yield supported by irrigation and nitrogen application in utilizing dry land area in Mesuji, Lampung Province, Indonesia Manik, Tumiar Katarina; Timotiwu, Paul B.; Mua’ddin, Mua’ddin
SAINS TANAH - Journal of Soil Science and Agroclimatology Vol 20, No 1 (2023): June
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/stjssa.v20i1.70711

Abstract

Lampung Province, Indonesia local government intended to extend shallot cultivation in Mesuji Regency, Lampung (-3.86, 105.43). Mesuji has 21,863.5 ha dry land area, with unproductive land of 10,325.6 ha which could be potential for growing shallot. However, horticulture crops such as shallot often face obstacles in dry land since dry land characterized with poor soil nutrient and limited water. The objective of this research are to analyze the effects of nitrogen fertilizer and different irrigation volumes on shallot growth and production, investigate shallot suitability to Mesuji agro-climate, and estimate shallot yield potential in Mesuji. The treatments on factorial split block were: without N, 80 kg N ha-1 , 160 kg N ha-1, and 240 kg N ha-1 and the irrigation levels: 25, 50, 75 and 100% of ETc; ETc is crops evapotranspiration. The Mesuji agro-climate was evaluated using standardized precipitation index (SPI) and the yield was simulated by Aquacrop model. The results showed that the effort of shallots production with a high fresh weight of bulbs and biomass in the Mesuji area requested water at least 75% ETc and N fertilizer doses of 160 kg N ha-1. The SPI indicated near normal condition was more than 65%, and drought existed in a small percentage in both places (a total of 16.9%  for Brebes the centre of shallot production  and 19.43% for Mesuji). The AquaCrop simulation gave a good yield estimation (simulated 19.451 ton ha-1 and observed 17.351 ton ha-1). There is a possibility that shallot will grow well in the Mesuji area even though the quality of the shallot should be further tested.
Effect of Iron (Fe) heavy metal content at different pH on the germination of seven soybean varieties in Indonesia Timotiwu, Paul Benyamin; Agustiansyah, Agustiansyah; Muslimah, Dini
SAINS TANAH - Journal of Soil Science and Agroclimatology Vol 20, No 2 (2023): December
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/stjssa.v20i2.70802

Abstract

Greater use of acid soil has expanded the area under cultivation for soybeans; however, acid soil is associated with heavy mineral toxicity, including Iron (Fe). This investigation looked at how well soybean seeds germinated in media containing heavy metal Fe and how the pH of the media affected the viability of soybean seeds. This research was conducted at the Seed and Plant Breeding Laboratory at the University of Lampung, Indonesia. The experimental design was a randomized block design. The first factor was seven soybean local varieties – Grobogan, Anjasmoro, Derap 1, Detap 1, Dena 1, Deja 1, and Dega 1 – and the second factor was heavy metal Fe solution pH of 6–7 and 4.5 and without heavy metal Fe (control). Seed viability in heavy metal Fe medium was assessed using radicle emergence, germination capacity or percentage, germination speed, number of normal seedlings, normal seedling hypocotyl length, main root length of regular seedlings, and normal shoot dry weight. This research found that heavy metal Fe affected soybeans’ seeds’ viability in pH 6–7 and 4.5. The observed data showed that all seeds’ viability variables in media with heavy metal Fe, both in pH 6–7 and in pH 4.5, differ from the control media. The seed viability in media heavy metal Fe pH 6–7 was not significantly different from the control media, but in pH 4.5, the difference is significant. Soybean varieties’ characteristics also influence how heavy metal Fe in different pH affects seed viability. Overall, Anjasmoro, Deja, Grobogan, and Dega were the types that consistently demonstrated resistance or adaptation to heavy metal Fe existence, while Dena, Derap, and Detap are susceptible to heavy metal Fe existence. Seed viability in Iron medium is not always related to seed physical performance; therefore, before planting soybean in acid soil, it is recommended to conduct a seed viability test.
Co-Authors , Agustiansyah Agus Karyanto Agustiansyah Agustiansyah Agustiansyah Agustiansyah Agustiansyah Agustiansyah Agustiansyah Agustiansyah Ali Rahmat Andi SETIAWAN Andrestu Kesuma Anjani Pratiwi Ardian Ardian B. Suprayogi Basoeki, Tjipto R. Cahya Adi Pranata Deka Delta Lita Desis Kurniyati DIDIK PURWANTO Dolly Saputra Saputra E. Pramono Eko Pramono Eko Pramono Eko Pramono Eko Pramono Eko Pramono Eliza Fitria erlinda citra dewi Ermawati Ermawati Franciscus Xaverius Susilo, Franciscus Xaverius Ginting, Yohannes Cahya Gusti Ayu Ningrum Hadi, M Syamsoel Herawati Hamim Herawati Hamim Herawati Hamim Hutagalung, Fransio John Hendri julia, alika nera giriyana julia Krisnarini, Krisnarini Kukuh Setiawan Kusuma, Yosep Riando Kuswanta Futas Hidayat M. Maryeta Maharani, Devi Manik, Tumiar Katarina B Margaretha S. Gadmor Margaretha S. Gadmor, Margaretha S. Maria Viva Rini Maya Maeistia Dewi Maya Maeistia Dewi Maysaroh, Siti Mega Fatimah Rosana Mua’ddin, Mua’ddin Muhammad Iqbal Muhammad Kamal Muslimah, Dini Nabila Lutfiah Nelita Aryani Niar Nurmauli Niar Nurmauli Niar Nurmauli, Niar Noly Agustin Nurmiaty, Yayuk Pramono, Eko Pramudya, Galuh M Purnomo Purnomo Qudus Sabha Adhinugraha Ramadhan Triyandi Ria Putri Ridwansyah, Budi Rizki Amelia Rugayah Rugayah Rusdi Sion Saiful Hikam Saiful Hikam Saiful Hikam Saiful Hikam Saiful Hikam, Saiful Setyo Dwi Utomo Shinta Anisya Siti Maysaroh Sri Wahyuni Suskandini Ratih Tumiar K. Manik Tumiar Katarina Manik Wawan Abdullah Setiawan Yafizham Yafizham Yayuk Nurmiaty Yayuk Nurmiaty Yayuk Nurmiaty Yohanes Cahya Ginting, Yohanes Cahya Yohannes Cahya Ginting Yosep Riando Kusuma Zelwia Tiasmitha Astorhie