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All Journal JURNAL ILMU PERTANIAN Agroprimatech Fruitset Sains : Jurnal Pertanian Agroteknologi Journal of Agrotechnology and Sustainability
Kurnia Selekta Etika Harefa
Universitas Katolik Santo Thomas, Indonesia
Agriculture, Biological Sciences & Forestry Environmental Science

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Journal : Agroprimatech

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The Effect of Planting Distance and Urea Fertiliser Dosage on the Growth of Lemongrass in a Polyculture System Sulastri, Yustina Sri; Harefa, Kurnia Selekta Etika; Munte, Marta Yulina
Agroprimatech Vol. 9 No. 2 (2025): Agroprimatech
Publisher : Prodi Agroteknologi Fakultas Agro Teknologi Universitas Prima Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34012/agroprimatech.v9i2.7627

Abstract

This study aimed to determine the effect of planting distance and urea fertilizer dosage on the growth of fragrant lemongrass in a polyculture cultivation system under rubber stands. The research was conducted on Jl. Sei Putih Rispa, Kelapa Satu Village, Galang District, Deli Serdang Regency, North Sumatra, at an altitude of about 65 m above sea level from May to August 2025. The experiment used a factorial Randomized Block Design (RBD) with two factors: planting distance and urea dosage. Planting distance consisted of three levels, namely J1 (20 × 40 cm), J2 (20 × 60 cm), and J3 (20 × 80 cm). Urea dosage consisted of four levels: U0 (0 g/plant), U1 (5 g/plant), U2 (10 g/plant), and U3 (20 g/plant). These treatments produced 12 combinations with three replications, resulting in 36 plots, each with four samples, totaling 144 plants. Observations were made at harvest, including root fresh weight, shoot fresh weight, root volume, root dry weight, shoot dry weight, and root-shoot ratio. The results indicated that planting distance significantly influenced root fresh weight, shoot fresh weight, root volume, root dry weight, and shoot dry weight, whereas urea dosage did not show a significant effect on the measured parameters. The most favorable planting distance for fragrant lemongrass growth was 20 × 80 cm, followed by 20 × 60 cm, suggesting that wider spacing supported better plant development in a polyculture system under rubber stands.
Co-Authors Arung Luoma Harefa Daeli, Dorthi Ester Junita Dedi Kusbiantoro Hutauruk, Sixtus Matanari, Jawaller Munte, Marta Yulina Nini Rahmawati Patricius Sipayung, Patricius Putra Hidayat Telaumbanua Ridho Victory Nazara Robert Alberth Sole Rosmayati Rosmayati Sitinjak, Lentina Tarigan, Rio Stepanus Yustina Sri Sulastri