Article Per Year (5 Year)
p-Index From 2021 - 2026
3.942
P-Index
This Author published in this journals
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 Jurnal Agrotek Tropika TheJournalish: Social and Government Jurnal Agrotropika Jurnal Pengabdian Masyarakat Indonesia Fruitset Sains : Jurnal Pertanian Agroteknologi Jurnal Inovasi Pembangunan Open Science and Technology Jurnal Natural 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 Law, Crime, Criminology & Criminal Justice Mathematics Mechanical Engineering Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Transportation Other

Published : 49 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 5 Documents
Search
Journal : Jurnal Agrotropika

 1 
PENGARUH DOSIS PUPUK NITROGEN, FOSFOR, DAN KALIUM TERHADAP PRODUKSI BENIH PADI VARIETAS MAYANG PADA TIGA LOKASI DI LAMPUNG UTARA Ridwansyah, Budi; Basoeki, Tjipto R.; Timotiwu, Paul B.; Agustiansyah, Agustiansyah
JURNAL AGROTROPIKA Vol 15, No 2 (2010): Agrotropika Vol.15 No.2 2010
Publisher : JURNAL AGROTROPIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (138.88 KB)

Abstract

Fertilizer is one of the ways to improve cultural techniques for producing high quality of seed with high early vigor. The objectitive of N, P,and K nutrient in balanced quantity can improve productivity and quality of seed rice. His research was to know response of three doses of N, P, and K on growth, production, and quality of seed rice of Mayang variety on three locations on North Lampung, and see interaction of both factors. Treatment arrangement was factorial by randomized complete block design with three replications. Sub factor is fertilizer (P); there are low fertilizer dose (P1) is farmer fertilizer dose consist 200 kg/ha urea and 50 kg NPK/ha; middle fertilizer dose (P2) is recommended government dose consist 250 kg/ha urea, 100 kg Sp 18/ha, and 100 kg/ha KCl; and high dose (P3) is recommended dose for seed production consist 300 kg/ha urea, 150 kg/ha SP 18, and 150 kg/ha KCl. Mains factor is location, there are Ciamis-Sungkai Utara, Wonomarto-Kotabumi Utara, and Semuli Jaya-Abung Semuli. Homogenity of varian each treatment analyzed by Bartlett test and to see eaded model by Tukey test. If all assumption are completely, data will be continue analyzed with BNJ test at level 5%. Result of research showed that high dose fertilizer is can give growth and seed production better than low dose fertilizer, but nonsignificant with middle dose. The best location for seed production is Semuli and than Wonomarto, and Ciamis in the last position, but nothing interaction between different of dose and location.Key words: rice, Mayang viability, fertilizer
PENGARUH TINGKAT KERACUNAN ALUMUNIUM TERHADAP PERUBAHAN GULA YANG DIEKSUDASI OLEH PERAKARAN KEDELAI (GLYCINE MAX [L.] MERR.) Timotiwu, Paul Benyamin
JURNAL AGROTROPIKA Vol 15, No 1 (2010): Agrotropika Vol.15 No.1 2010
Publisher : JURNAL AGROTROPIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (211.183 KB)

Abstract

Around 7 ? 30 % of photosynthate produced by plants was exuded through the plant roots. Compounds exuded were in forms of polysaccharides, polypeptides, enzymes, and several secondary metabolic compounds. The presence of aluminum may cause an obstruction on seedling growth and establishment and significantly relate with sugars excreted by the plant roots. The mechanisms of sugars excretion by the plants was one among several means of the plants to overcome environmental toxicity. This research intended to (1) find out kind of sugars exuded by the soybean roots when underwent an aluminum toxicity; and (2) understand the effects of the increase of aluminum concentration on sugars exuded by the soybean roots. The research utilized a technique of aeroponic mist system. The treatments were arranged in a 3X2 factorial; the first factor was the aluminum concentration consisted of 0, 0.5, and 1 mM AlCl3. The second factor was the soybean varieties which were Slamet variety recommended resistant to Al and Burangrang variety susceptible to Al. The treatment combinations were applied in a split plot ? randomized complete-block design. To understand the effects of the increase in Al concentration and the differences of kind of sugars on the varieties, standard error of mean (SEM) statistics were used. The results of this research indicated that sugars exuded from the roots of Slamet and Burangrang soybeans which experienced Al toxicity were glcose (Glc) and galactose (Gal). Total exuded Glc from Slamet variety was 639.23 µg, whereas Burangrang variety was 899.41 µg. Total exuded Gal from Slamet variety was 404.78 µg whereas Burangrang variety was 489.85 µg. The pattern of sugar exudation was different between Slamet and Burangrang with the increase of Al concentration. The Slamet variety confirmed more tolerant than the Burangrang variety since the Slamet variety increased the exudation of Glc and Gal in response to the increased of Al concentration. This phenomenon was strengthened by the parameter responses of a lower decrease on root fresh and dry weights, and a lower percentage of killed plants.  Key words: aerophonic mist system, aluminum, glucose, galactose, soybean
FENOLOGI DAN PERTUMBUHAN TANAMAN STRAWBERRY DI DATARAN RENDAH SEBAGAI KAJIAN AWAL DAMPAK PERUBAHAN IKLIM TERHADAP PERTUMBUHAN DAN PRODUKSI TANAMAN Timotiwu, Paul B; Manik, Tumiar Katarina; Agustiansyah, Agustiansyah; Pramono, Eko
JURNAL AGROTROPIKA Vol 20, No 1 (2021): Jurnal Agrotropika Vol 20 No 1, Mei 2021
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v20i1.4596

Abstract

Climate change has been understood from air temperature that constantly rising.  Therefore, to study the impact of climate change on crops growth and production should begin with study the impact of air temperature on crops, so that the technique of making crops adapt to the climate change could be developed.  Crops reaction on temperature change could be detected from the phenology and quantified with the Growing degree days (GDD). The objective of this research was to identify the impact of temperature change on strawberry phenology and production through cultivating on low land area and calculating the GDD at the end of the planting period.  The results showed that Strawberry on low land experienced some difficulties to grow in optimal rate; up to the 10th week plant still did not reach the generative state uniformly and canopy coverage was below 20 percent.
Efektivitas Priming pada Benih Jagung dalam Memperbaiki Perkecambahan pada Media Masam Agustin, Noly; Agustiansyah, Agustiansyah; Timotiwu, Paul Benyamin; Kamal, Muhammad
JURNAL AGROTROPIKA Vol. 22 No. 2 (2023): Jurnal Agrotropika Vol 22 No 2, Oktober 2023
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v22i2.7699

Abstract

The high Aluminum content in Ultisol soil is one of the main problems in maize cultivation starting from the germination phase to plant growth. Priming treatment on seeds is believed to be able to improve germination in a less favorable environment. The study was conducted to determine the effect of priming on the germination of corn seeds germinated in acid media containing aluminum. The study was arranged in a Completely Randomized Design (CRD) which was repeated four times. There were 8 treatments in this study, namely control/without priming, water priming, KNO3 0.1%, and 0.5, PEG-6000 5% and 10%, GA3 50 ppm and 100 ppm. The data were analyzed for variance and continued with a 5% LSD test using the R Studio statistic program. The results showed that 50 ppm GA3 priming was the best treatment for increasing corn seed vigor based on the variables of time of radicle emergence, time of emergence of plumules, growth speed, growth synchronously, vigor index, root length, coleoptile length, wet weight of normal sprouts, and dry weight of normal sprouts. Keywords:priming, corn, germination
EVALUASI MUTU FISIOLOGIS TERHADAP LIMA VARIETAS BENIH KEDELAI (Glycine max [ L.] merr) PADA PENYIMPANAN SUHU RUANG YANG BERBEDA AKIBAT ANOMALI CUACA EL NINO 2023 Fitria, Eliza; Agustiansyah, Agustiansyah; Timotiwu, Paul Benyamin; Hidayat, Kuswanta Futas; Purnomo, Purnomo
JURNAL AGROTROPIKA Vol. 24 No. 2 (2025): Jurnal Agrotropika Vol 24 No 2, Oktober 2025
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v24i2.11445

Abstract

Global climate change such as El Nino has serious impacts on the agricultural sector, especially soybean production which is very sensitive to water shortages. The government is responding by developing superior soybean varieties that are drought-resistant, such as Kemuning 1, Demas 1, and other varieties that have qualities equivalent to imported soybeans. A significant issue in soybean cultivation within tropical regions is the reduction in seed quality during storage, which is related to the high fat content present in orthodox seeds. Therefore, maintaining the physiological condition of the seeds until planting season requires controlling seed storage at optimal temperature and humidity levels. The results demonstrate that both cultivar and temperature affect the physiological quality of soybean seeds. The Grobogan and Dega 1 varieties produce better physiological quality compared to Deja 2, Dena 1, and Detap 1. Storing seeds at cold temperatures is more effective in maintaining seed viability and quality stability. Key words: Seed, soybean, seed storage, physiological quality  
Co-Authors , Agustiansyah Agus Karyanto Agustiansyah Agustiansyah Agustiansyah Agustiansyah Agustiansyah Agustiansyah Agustiansyah Agustiansyah Ali Rahmat Andrestu Kesuma Anjani Pratiwi Ardian Ardian B. Suprayogi Basoeki, Tjipto R. Cahya Adi Pranata Deka Delta Lita Desis Kurniyati DIDIK PURWANTO Dolly Saputra Saputra Dwi Rahayu 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 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 Muhammad Kamal 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 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