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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Jurnal Hortikultura Indonesia (JHI) Jurnal Lanskap Indonesia Vegetalika Jurnal Ilmu Pertanian AGRIKA Jurnal Ilmu-Ilmu Pertanian Indonesia AGRIVITA, Journal of Agricultural Science ASEAN Journal on Hospitality and Tourism JURNAL AGRILAND AGRISAINTIFIKA Jurnal Ilmu-ilmu Pertanian Jurnal Aplikasi Teknologi Pangan Jurnal SOLMA JMM (Jurnal Masyarakat Mandiri) Jurnal Pertanian Agros Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) BIOEDUSAINS: Jurnal Pendidikan Biologi dan Sains Agritrop : Jurnal Ilmu-Ilmu Pertanian (Journal of Agricultural Science) jurnal Ilmu Pertanian (Agricultural Science) Jurnal Ilmiah Membangun Desa dan Pertanian Agrotechnology Research Journal Teknologi dan Industri Pertanian Indonesia National Multidisciplinary Sciences Warta LPM AGRIC
Nugraheni Widyawati
Universitas Kristen Satya Wacana
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Social Sciences Other

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The Impact of Yellow Leaf Curl Disease Stage During Vegetative and Generative Phases on The Growth and Yield of Curly Red Chili Pepper OR Twist 42 Syahtian Suprayogi; Nugraheni Widyawati; Maria Marina Herawati
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 2 (2025): April 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i2.483-493

Abstract

Curly chili (Capsicum annum L.) is one of the vegetable commodities widely cultivated in Indonesia which has a high selling value. Although it has a high selling value, chili cultivation has many obstacles, one of which is the attack of pathogens that reduce the yield of curly chili, especially yellow curly leaf disease on agricultural land. Yellow curly leaf disease is always found in chili cultivation and is the main production obstacle in Indonesia that reduces the harvest. This study aims to see the impact of yellow curly disease attacks in the vegetative and generative phases on the growth and yield of curly red chili cultivation. The study was conducted from August 2023 to March 2024 using the field observation method from the beginning of growth to harvest. Observations were made by measuring the parameters of plant height, stem diameter, number of branches, number of productive branches, fallen flowers, fruit weight, fruit length and observation of yellow curly disease pathogens. The results of the study showed that attacks of yellow curly disease in the vegetative and generative phases had a significant effect on the growth parameters and yield of curly red chili plants. From the results of the analysis of yellow curly disease attacks in the vegetative phase, the number of fruits and fruit weight were lower, namely 10.90 and 32.04 grams/tree, compared to attacks in the generative phase which produced 24.27 and 77.67 grams/tree. Keywords: Begomovirus, Generative, Vegetative, Whitefly, Yellow curl.
Permeabilitas dan Perkecambahan Benih Aren (Arenga pinnata (Wurmb.) Merr.) Nugraheni Widyawati; , Tohari; Prapto Yudono; Issirep Soemardi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 37 No. 2 (2009): 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 (51.493 KB) | DOI: 10.24831/jai.v37i2.1408

Abstract

The characteristics of seed coat delay the germination of sugar palm seeds. A research was carried out to investigate the permeability of sugar palm seeds and accelerate the germination. The research consists of four experiments with purposes: 1. to investigate the distribution of water content of sugar palm seed (RCBD Factorial between part of seed : whole seed, seed coat, endosperm and embryo under three conditions: control; soaking in water and germinate, 5 replications); 2. to investigate seed permeability (RCD, 6 soaking periods, 4 replications); 3. to investigate the content of lignin and tannin in seed (RCD, 8 seed ages, 4 replications); 4. to accelerate seed germination (RCBD, 6 treatments of scarification, 4 replication).  The results showed that the permeability of sugar palm seeds to water absorption declined with seed maturity because of the increasing in lignin and tannin content. Seed germination can be accelerated with scalding on the operculum site to increase water absorption.   Key words: Sugar palm, seeds, permeability, germination
Rice Seedlings Growth at Multiple Shelves and Light Substitution in Greenhouse Nugraheni Widyawati; Theresa Dwi Kurnia; Bistok Hasiholan Simanjuntak; Andree Wijaya Setiawan
Agrotechnology Research Journal Vol 8, No 2 (2024): Agrotechnology Research Jurnal
Publisher : Perkumpulan Agroteknologi/Agroekoteknologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/agrotechresj.v8i2.86927

Abstract

Rice is Indonesia’s first staple food crop, planted throughout the year in irrigated rice fields. Finding an efficient method of producing rice seedlings outside the paddy fields is necessary. This research aims to determine the optimal shelf levels in open fields to support seedling rice growth and chlorophyll content and identify suitable lighting alternatives to light-emitting diode (LED) growth lights for supporting indoor seedling rice growth. This study used thirteen treatment variations, each repeated five times in a Randomized Block Design. The observational data were analyzed utilizing ANOVA, standard deviation, correlation, and the Honesty Significant Differences (HSD) test at a 5% significance level. The study's results were in the open field. The seedlings on the third level of shelves received the highest intensity of sunlight so that the chlorophyll content, seedling height, and number of leaves were relatively higher than those on the second and first level shelves. In greenhouse cultivation, the substitution for LED grows light until 150 Watts between 12 and 14 hours, causing low light intensity, chlorophyll levels, seedling height, and fewer leaves than in open fields.
Co-Authors , Tohari Alfred Jansen Sutrisno Anang Dwi Laksono Andree Wijaya Setiawan Antonius Wirangga Prasetyo Wicaksono Arif Susila Arik Santoso Bagas Yanu Prayoga Bagas Yanu Prayoga Bistok Hasiholan Simanjuntak Bistok Hasiholan Simanjuntak Budi Winarto Cahyono, Yulius Eko Christianto Prakoso Damara Dinda Nirmalasari Zebua Djoko Murdono Edy Prasetya Sembiring eftrida yuliana pasaribu Endang Pudjihartati Exvaricha Exvaricha Hanif Margan Asparingga Harmaili Sangga Hendrik Johannes Nadapdap Henny Mustika Wati Ilham Fairuz Tirta Aji Issirep Soemardi Jalalina Abdillah Jonathan Galih Raka Kusuma Kezia Natalia Kristi, Yosia Lasmono Tri Sunaryanto Lestari, Anti Liska Simamora Maria Marina Herawati Nanda Guluh Pangestika Novani Wahyu Christanti Prapto Yudono Priotomo, Galih Bagus Purwoko, Agus Sabrina Ayu Sony Heru Priyanto Suprayogi, Syahtian Suprihati Suprihati Suprihati Suseno Suseno Syahtian Suprayogi Theresa Dwi Kurnia Theresa Dwi Kurnia Tinjung Mary Prihtanti Yoga Aji Handoko Yohanes Hendro Agus Yosep Chandra Puspita Yuda Ady Baskara Yuliana Pratiwi Asti Yuliawati Yustika Yustika