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Shallot (Allium cepa L.) Growth and Yield under Nitrogen and Phosphorus Fertilization in Former Long Bean Fields Janah, Miftahul; Azhari, Anjar Pranggawan; Jufri, Afifah Farida
Jurnal Biologi Tropis Vol. 26 No. 3 (2026): in Progress
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v26i3.12685

Abstract

Shallot (Allium cepa L.) is a high-value horticultural crop whose productivity depends on adequate nutrient availability and fertilizer management. Former yardlong bean land has the potential to improve fertilizer efficiency through residual nitrogen derived from biological nitrogen fixation. This study aimed to evaluate the effects of nitrogen (N) and phosphorus (P) fertilizer rates and their interaction on the growth and yield of shallot cultivated on former yardlong bean land. Four nitrogen rates (25%, 50%, 75%, and 100% of the recommended dose) and two phosphorus rates (50% and 100% of the recommended dose), each replicated three times, were used in the factorial Randomized Complete Block Design experiment, which was carried out in Rembige Village, Mataram City, between February and April of 2026. Analysis of variance and the Honestly Significant Difference test at the 5% significance level were used to evaluate the data. At 42 and 49 days following planting, nitrogen had a substantial impact on both the number of bulbs per clump and plant height. While the interplay between nitrogen and phosphorus had a substantial impact on leaf chlorophyll content, phosphorus had a considerable impact on bulb number, bulb diameter, and fresh bulb weight. The combination of 75–100% recommended nitrogen and 100% recommended phosphorus produced the best growth and yield, indicating that former yardlong bean land can enhance fertilizer use efficiency in shallot cultivation.
Co-Authors Adji, Alif Pradipta Adji, M. Alif Pradipta Adriansyah, Al Fajr Adriansyah, Al-Fajr Agustini, Rika Yayu Ahmad Nawawi Al-Fajr Adriansyah Aluh Nikmatullah ALUH NIKMATULLAH Amrul Jihadi Anjani, Hikmah Rara Anjar Pranggawan Azhari Apriani, Reni Ashari, Anjar Pranggawan Baiq Rika Ayu Febrilia Baiq Yulvia Elsadewi Yuniartati Dewi, Denisa Kartika Dori Kusuma Jaya Dori Kusuma Jaya Dwi Noorma Putri Dwi Noorma Putri Dwi Noorma Putri Dwi Ratna Anugrahwati Fazila Sail Febrilia, Baiq Rika Ayu Fitri Hamdani . Idatul Fitri Danasari Idiatul Fitri Danasari Ihsan, Makbul Jayaputra, Jayaputra Kisman Kisman M. Alif Pradipta Adji Martini Supiana Miftahul Janah, Miftahul Muhammad Alif Pradipta Adji Muhammad Imran Muhammad Sibawaihi Nimatullah, Aluh Novita Hidayatun Nufus Novita Hidayatun Nuvus Novita Hidayatun Nuvus Nufus, Nofita Hidayatun Nurrachman Nurrachman Nurrachman Nurrahman, Nurrachman Oktavia, Anggie Pratiwi, Dita Retno Putri, Dwi Noorma Raehanayati Raehanayati Raehanayati Raehanayati Rahayu, Lidya Sri Rahmi, Eka Reni Apriani Reni Apriani Rizki, Al-Fajr Rosalina, Febrianti Sail, Fazila Septian, I Gede Nano Siska Ita Selvia Siska Ita Selvia Siti Maryam Sri Hayati Sudradjat , Sulistyono, and Eko Suprayanti Martia Dewi Suprayanti Martia Dewi Suprayanti Martia Dewi Suprayanti Martia Dewi, Suprayanti Martia Taufik Abdullah Taufik Abdullah Utami, Dianti Suciati Vera Yulandasari Wideratih, Anggun Angling Yakop, Uyek Malik Yanuartati, Baiq Yulfia Elsadewi Yuliana Asri Yuliana Asri Zuhdiyah Matienatul Iemaaniah