Article Per Year (5 Year)
p-Index From 2020 - 2025
0.61
P-Index
This Author published in this journals
All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Akta Agrosia
Suharjo, Usman Kris Joko
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Economics, Econometrics & Finance

Published : 4 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 4 Documents
Search

 1 
Responses of Solo Garlic Crops Grown at Low Elevation of Tropical Areas to Organic Matter and Paclobutrazol Suharjo, Usman Kris Joko; Widodo; Pamekas, Tunjung; Monica
Akta Agrosia Vol 27 No 1 (2024)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/aa.27.1.32-36

Abstract

Solo garlic has been known for its medicinal benefits because of which it is considerably expensive. Nonetheless, no Indonesian farmer produces solo garlic intentionally since no information on how to grow solo garlic in Indonesia is available.  Growers, usually harvest 5-10 kg of solo garlic from 1 hectare of garlic crop they grow. A greenhouse experiment was conducted from November 2018 to January 2019 at the Department of Agronomy, Faculty of Agriculture, Bengkulu University, about 10 m above sea level to study the effects of paclobutrazol and organic matter on the เว็บสล็อต | R4shub growth and yield of solo garlic crop grown at low elevation of Bengkulu. The experiment used completely randomized design arranged in factorial (2 factors; 5 replications). The first factor tested was organic matter levels (0, 2.5, 5.0, 7.5%) and the second factor was paclobutrazol concentrations (0, 500, 1000, 1500 ppm). Solo garlic seeds were planted in the polybag filled with 5 kg of media, a mixed of topsoil and organic matter. The crops were sprayed with paclobutrazol at 21, 35, and 49 days after planting.  The results showed that organic matter did not significantly affect crop growth and yield. In contrast, paclobutrazol significantly affected crop growth and yield, with the best yield was found at 1500 ppm paclobutrazol. Furthermore, there was no significant interaction between organic matter and paclobutrazol on the growth and yield of solo garlic grown at low elevation at tropical climate in Indonesia. Keywords: clove, medicine, organic matter, paclobutrazol, solo garlic
Evaluation of the Growth and Yield of Hydroponically Grown Bell Pepper at Low Altitudes Nabila, Athya Kania; Herison, Catur; Fahrurrozi; Suharjo, Usman Kris Joko; Handajaningsih, Merakati; Rustikawati
Akta Agrosia Vol 27 No 1 (2024)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/aa.27.1.19-26

Abstract

Bell pepper cultivation in low-altitude regions of Indonesia holds significant promise because of increasing domestic and international demand. However, domestic production is not sufficient to meet market needs. This study investigates hydroponic cultivation as a potential solution to low-altitude agriculture. Conducted from November 2023 to January 2024 at the University of Bengkulu Greenhouse เว็บสล็อต | R4shub (10 meters above sea level), the research evaluated the performance of nine bell pepper cultivars using a single-factor completely randomized design (CRD) with three repetitions. The cultivars tested were Red Star F1, Cardinal Star, Hercules, Merah, Yellow Star F1, Golden Star F1, Polaris F1, Orange Bell F1, and Kuning. Results indicated that the Cardinal Star and Polaris F1 cultivars outperformed the others under low-altitude conditions, demonstrating superior growth and yield components. Cardinal Star exhibited the highest fruit weight per plant, whereas Polaris F1 had the highest weight per fruit or fruit size. Key word:  bell pepper, hydroponics, low altitude areas
Promoting Tuber Formation In Vitro with Benzyl Amino Purine and Paclobutrazol at Different Concentrations Suharjo, Usman Kris Joko; Hasanudin, Hasanudin; Pamekas, Tunjung; Pujiwati, Hesti; Vanturini, Alyi
Akta Agrosia Vol 22 No 1 (2019)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (884.775 KB)

Abstract

A common problem related to the production of potatoes in Indonesia is the use of poor quality seed sources and declining seeds. Plant tissue culture is one of the best methods used for the provision of quality seeds. This study aims to establish the best combination of BAP concentration and the concentration of paclobutrazol in spurring the growth of cuttings and initiation of potato tubers in vitro.This research was conducted in November 2017 until June 2018 at Agronomy Laboratory of Biotechnology Division and Plant Culture Network of Agriculture Faculty of Bengkulu University. The  research  design  used  was  Completely  Randomized  Design  (CRD)  which  consist  of  18 combination of BAP treatment and Paclobutrazol was repeated 6 times. The concentration of BAP used was 0 mg / l, 5 mg / l, 10 mg / l and the concentration of Paclobutrazol 0 mg / l; 2.5 mg / l; 5 mg / l; 7.5 mg / l; 10 mg / l; 12.5 mg / l. The data of the research were analyzed by F test of 5% level and if there were different between treatments followed by Duncan's Multiple Range Test (DMRT) test of5% level. The results showed that the combination of BAP and  Paclobutrazol concentration had significant effect on all observed variables. Treatment of 5 mg / l BAP and 7.5 mg / l Paclobutrazol is the best medium in inducing potato micro tube as indicated by the fastest tuber formation time, highest percentage of productive crops, largest number of tubers per bottle, number of tubers per productive plant, tuber diameter the largest and highest wet weight of tuber per bottle. Keywords : in vitro, BAP, paclobutrazol, Potato
Morphological and Physiological Performances of 18 Soybean Varieties Exposed to Salinity Stress Pujiwati, Hesti; Suharjo, Usman Kris Joko; Prameswari, Wuri; Husna, Muhimmatul; Gonggo, Bambang; Ginting, Sempurna; Susilo, Edi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 49 No. 3 (2021): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (766.554 KB) | DOI: 10.24831/jai.v49i3.37819

Abstract

Peningkatan produksi kedelai dapat dilakukan dengan menanam tanaman di lahan marginal, seperti tanah salin. Upaya yang dapat dilakukan untuk mengatasi permasalahan tersebut salah satunya dengan menyeleksi tanaman yang toleran pada kondisi salin. Penelitian dilakukan pada bulan Mei-Juli 2021 di rumah kaca Departemen Agronomi, Fakultas Pertanian, Universitas Bengkulu, 10 m di atas permukaan laut. Penelitian ini bertujuan untuk mengevaluasi toleransi 18 varietas kedelai yang ditanam pada cekaman salinitas. Kedelai ditanam dalam pot plastik berdiameter 10 cm yang dipupuk dengan larutan AB-mix dengan perlakuan 0 dan 6 dSm-1 NaCl selama 15 hari dari cekaman salinitas. Pertumbuhan dan indeks toleran cekaman bibit diukur. Hasil penelitian menunjukkan bahwa varietas kedelai mempengaruhi pertumbuhan tanaman secara berbeda. Selain itu, cekaman salinitas secara nyata mengurangi pertumbuhan tanaman. Hasil penelitian menunjukkan bahwa 18 varietas kedelai tergolong pada toleran salinitas pada tingkat salinitas 6 dSm-1. Kata kunci: salinitas, toleransi varietas kedelai
Co-Authors Edi Susilo Fahrurrozi Gonggo, Bambang Hasanudin Hasanudin Herison, Catur HESTI PUJIwATI Husna, Muhimmatul Merakati Handajaningsih Monica Nabila, Athya Kania Prameswari, Wuri Rustikawati SEMPURNA GINTING Tunjung Pamekas, Tunjung Vanturini, Alyi Widodo