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All Journal Jurnal Ilmu Agroteknologi Indonesia (JIGRONA)
Serlin Jessica Mendrofa
Universitas Nias
Agriculture, Biological Sciences & Forestry Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Immunology & microbiology

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Pengaruh Cahaya Terhadap Pertumbuhan Tanaman Marta Tristanti Mendrofa; Berkat Jaya Gulo; Serlin Jessica Mendrofa; Andi Donal Putra Zebua; Putri Harta Bawamenewi; Apriani Hia
Jurnal Ilmu Agroteknologi Indonesia Vol. 2 No. 1 (2026): JIRGONA - Januari
Publisher : CV. SINAR HOWUHOWU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70134/jigrona.v2i1.1046

Abstract

This study aims to examine the differences in plant growth placed in bright and dark places. Light is one of the important factors in photosynthesis, which plays a direct role in plant growth and development. In this study, several plant samples from the same species were grown in controlled environmental conditions and placed in two different locations: a bright place with direct access to sunlight, and a dark place that did not receive any light at all. The parameters measured included plant height, number of leaves, and leaf color during a certain period. The results showed that plants placed in bright places had more optimal growth than plants in dark places. Plants in bright places showed a significant increase in height, a greater number of leaves, and fresh green leaf color. In contrast, plants in dark places tended to have stunted growth with pale or yellowish leaf color. This study confirms the importance of light as a key factor in plant growth, and provides insight into plant management in various environmental conditions.
Pengaruh Pemupukan Nitrogen Terhadap Laju Fotosintesis, Kandungan Klorofil, Dan Pertumbuhan Tanaman Jagung (Zea Mays L.) Yanuari Hulu; Helmin Parida Zebua; Dencervis Gulo; Wendi Warisman Harefa; Sastra Alberta Hia; Serlin Jessica Mendrofa
Jurnal Ilmu Agroteknologi Indonesia Vol. 2 No. 1 (2026): JIRGONA - Januari
Publisher : CV. SINAR HOWUHOWU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70134/jigrona.v2i1.1318

Abstract

Nitrogen is an essential nutrient that plays an important role in chlorophyll formation and photosynthesis. This study aimed to determine the effect of nitrogen fertilization on photosynthesis rate, chlorophyll content, and growth of maize (Zea mays L.). The research was conducted from October to December 2025 in Dahana Village, Universitas Nias, using a Completely Randomized Design (CRD) with four nitrogen levels and five replications. Observed parameters included plant height, number of leaves, and plant dry weight. Data were analyzed using analysis of variance (ANOVA) and LSD test at the 5% level. The results showed that nitrogen fertilization significantly affected maize growth by increasing plant height, leaf number, and dry weight. However, excessive nitrogen application did not always result in optimal growth. Therefore, appropriate nitrogen fertilization is required to support optimal maize growth.
Co-Authors Andi Donal Putra Zebua Apriani Hia Berkat Jaya Gulo Dencervis Gulo Helmin Parida Zebua Marta Tristanti Mendrofa Putri Harta Bawamenewi Sastra Alberta Hia Wendi Warisman Harefa Yanuari Hulu