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All Journal Jurnal Ilmu Pertanian dan Perikanan (PENARIK) Jurnal Ilmu Agroteknologi Indonesia (JIGRONA)
Harefa, Wendi Warisman
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Immunology & microbiology Other

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Analisis Hubungan Antara Struktur Tanah dan Produksi Biomassa Tanaman Zebua, Charles Septiawan; Harefa, Wendi Warisman
Jurnal Ilmu Pertanian dan Perikanan Vol. 1 No. 1 (2024): PENARIK - Agustus
Publisher : CV. SINAR HOWUHOWU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70134/penarik.v2i1.65

Abstract

This research aims to analyze the relationship between soil structure and plant biomass production. Soil structure is an important factor that influences plant growth through its influence on aeration, drainage and nutrient availability. In this research, soil physical parameters were measured, such as density, porosity and aggregate size, as well as observations of plant biomass production in various types of soil. The analysis results show that soil with good structure, characterized by high porosity and low density, tends to produce higher biomass. Additionally, a significant positive relationship was found between soil aggregate size and the volume of biomass produced. These findings emphasize the importance of managing soil structure to increase crop productivity, as well as providing insights for sustainable agricultural practices. It is hoped that this research can become a reference for farmers and land managers in efforts to increase agricultural yields through improving soil structure.
Perbedaan Pertumbuhan Tanaman Yang Diletakkan Di Tempat Terang Dengan Tempat Gelap Hulu, Stefani Angel Kristin; Harefa, Wendi Warisman; Waruwu, Basri Kalvianus; Frans Zefrindo Two Waruwu; Erwin Saputra Gea; Ariel Nezer Perlindungan Halawa
Jurnal Ilmu Pertanian dan Perikanan Vol. 2 No. 1 (2025): PENARIK - April
Publisher : CV. SINAR HOWUHOWU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70134/penarik.v2i1.226

Abstract

This study aims to explore the effect of lighting on plant growth and development. Two different lighting conditions, namely bright and dark places, were selected as independent variables in this study. The samples used in this study were mung bean and corn (Phaseolus vulgaris) plants. The selection of mung bean and corn plants as samples was based on several considerations, including: Mung bean and corn plants are easy to plant and care for, so they are suitable for research that requires intensive observation over a certain period of time. The results of the study showed that plants placed in bright places showed better growth compared to plants placed in dark places. Plants in bright places had higher plant heights, more leaves, and greater leaf weight. This shows that sufficient lighting is an important factor in supporting plant gowth. The conclusion of this study is that lighting plays an important role in plant growth. Adequate lighting can increase photosynthesis, which in turn supports plant growth and development. This study provides insight into the importance of lighting in agriculture and can be a basis for further research on optimizing lighting conditions for optimal plant growth.
Pengaruh Pemakaian Air Rendaman Sabut Kelapa Sebagai Penyiram Terhadap Pertumbuhan Seledri (Apium Graveolens) Harefa, Wendi Warisman
Jurnal Ilmu Pertanian dan Perikanan Vol. 2 No. 2 (2025): PENARIK - Agustus
Publisher : CV. SINAR HOWUHOWU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70134/penarik.v2i2.652

Abstract

This study aims to determine the effect of using coconut husk soaking water as a watering medium on the growth of celery plants (Apium graveolens). Coconut husk soaking water is known to contain various nutrients such as potassium, magnesium, and natural growth hormones that can support plant development. The research was conducted using an experimental method with a randomized block design (RBD), consisting of two main treatments: watering with plain water (control) and watering with coconut husk soaking water. Observed parameters included plant height, number of leaves, and leaf color over a specific growth period. The results showed that celery plants watered with coconut husk soaking water exhibited better growth compared to the control, particularly in terms of leaf number and greener leaf color. These findings indicate that coconut husk soaking water has the potential to serve as a natural watering alternative that can enhance soil fertility and the quality of celery plant growth. Thus, utilizing coconut husk waste in the form of soaking water can be an environmentally friendly solution for sustainable agricultural practices.
Pengaruh Pemupukan Nitrogen Terhadap Laju Fotosintesis, Kandungan Klorofil, Dan Pertumbuhan Tanaman Jagung (Zea Mays L.) Hulu, Yanuari; Zebua, Helmin Parida; Gulo, Dencervis; Harefa, Wendi Warisman; Hia, Sastra Alberta; Mendrofa, Serlin Jessica
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 Ariel Nezer Perlindungan Halawa Erwin Saputra Gea Frans Zefrindo Two Waruwu Gulo, Dencervis Helmin Parida Zebua hia, sastra alberta Hulu, Stefani Angel Kristin Hulu, Yanuari Mendrofa, Serlin Jessica Waruwu, Basri Kalvianus Zebua, Charles Septiawan