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Journal : Tropical Plantation Journal

Effect of Dolomite and NPK on The Growth and Yield of off-Season Shallots Iswahyudi, Iswahyudi; Haryanto, Eddy Tri; Supriyono, Supriyono; Al-batul, Fitrotunnisa; Samanhudi, Samanhudi; Irawati, Erni; Rahayu, Muji; Purwanto, Edi
Tropical Plantation Journal Vol 5, No 1 (2026): TROPICAL PLANTATION JOURNAL
Publisher : Akademi Komunitas Perkebunan Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56125/tpj.v5i1.74

Abstract

Shallot is a high-value horticultural commodity. Its productivity often declines due to suboptimal soil conditions, such as low pH and imbalanced nutrient availability, especially when cultivated off-season. This study aimed to determine the optimal combination of dolomite and NPK (Nitrogen, Phosphorus, Potassium) fertilizer for the growth and yield of shallot cultivated in the off-season. The research was conducted in Ngringo Village, Jaten District, Karanganyar Regency from February-April 2025. The method used was a factorial Completely Randomized Design (CRD) with two factors and three replications. The first factor was dolomite doses (0; 2000; and 4000 kg.ha-1) and NPK fertilizer doses (250; 375; and 500 kg.ha-1). Observed parameters were plant height, number of leaves, fresh and dry biomass weight, fresh and dry bulb weight, number of bulbs per plant, and bulb diameter. Data were analyzed by analysis of variance (ANOVA) at a 95% significance level and continued with Duncan’s Multiple Range Test (DMRT) with 95% significance level when significant differences were found. The results showed no significant interaction between dolomite and NPK fertilizer on shallot growth and yield. Dolomite at 2000 kg.ha-1 significantly increased the number of leaves, while NPK fertilizer had no significant effect. However, 250 kg.ha-1 of NPK fertilizer produced similar results to higher doses, indicating potential fertilizer efficiency. Environmental conditions such as high humidity and low light intensity likely influenced treatment effectiveness.
Co-Authors Aisya Wahyuningsih, Aisya Al-batul, Fitrotunnisa Alifia Ridha Aufa Ajzahra Amalia Tetrani Sakya Amalia Tetrani Sakya, Amalia Tetrani Andriyana Setyawati Anggraini, Yasinta Anik Nuryati, Anik Anindita Wirajaya, Maheswara Aprilia Ike Nurmalasari Aquilla, Felicia Ari Prasetyo Arif Noor, Faizal Arif Nurmawan Toro, Arif Nurmawan Arviana, Annisa Dian Bambang Supriyanta, Bambang Boking Delaokta, Yonanda Budi Setiawan Budiastuti, Maria Theresia Sri Budiono, Tri Buruuj Ahwaludin C Lewaherilla, Novalien Cintyaning Saraswati, Shabrina D. Mandacan, Nataniel Debi Firma Indari, Debi Firma Devi Novita Sari Dewi Sri Rahayu, Dewi Sri Dewi, Murti Sari Diah Adriani Malik Dian Wuri Astuti Dian Wuri Astuti1, Dian Wuri Djoko Purnomo Djoko Purnomo Duma Soswati Ritonga Dyah Ari Afrilliani, Dyah Ari Eddy Tri Haryanto, Eddy Tri Edi Purwanto Edward Kurnia Setiawan Limijadi, Edward Kurnia Setiawan Elva Kadarhadi Erni Irawati evan jaelani Fajaryani, Dwi Fardhiasih Dwi Astuti Gozali, M. Didit Gunawan, Imelda Gusti Fauza, Gusti Hadi, Bimoseno Prasteyo Hamini, Hamini Harianto, Salam Harmilah Harmilah Harmilah, Harmilah Haryaka, Usfandi Hasanuddin Hasanuddin Hasbi, Nurul Amaliah Herlisa Anggraini Hernawan, Salsabiela Hieronimus Rayi Prasetya, Hieronimus Rayi Holy Ametati HUGO WARAMI Humaimah, Calista Nurifa ISWAHYUDI ISWAHYUDI jaelani, evan Kasiyati, Menik Kesuma Widhiarti, Chandra Komalasari, Anisah Kurniasari, Tiara Kusdanu Waskito, Saptono Limpo, Lita M. Atik Martsiningsih M. Yusuf Mahardika, Sherly Makduani, Rivai Marchivanalia, Pinkan Olivia Martha Atik Martsiningsih Martsiningsih, M. Atik Martsiningsih, Marta Atik Maufur Maufur Mawahyudi Mely Gustina Menik Kasiyati Mufidah, Salma Fitria Muhammad Imam Wicaksono Mulyati Mulyati Musyafaah, Novita Siti Nabilawati, Hijrah Nasri, Juminah Nastiari, Samara Galih Dhiya Naufal Zaky, Muhammad Nawawi, Haris Nisak, Chonitatun Noka, Isara Abda Nur Fauziah, Qori Nurmalasari, Aprilia Ike Okid Parama Astirin Oktaviana, Mella Magdalena Pangestuti, Retno Pradiska Budi, Agustyarum Priyanto, Yuda Galang Pudyastuti, Rita Rena Pudyastuti, Siti Nuryani Putri Salshabila, Zulina Putri, Lutfia Hermawati Rahmad Rahmawati, Ully Ramadania, Arindha Desyifa Ramadhani, Azizah Ramadhanti, Azizah Ridwan Herdyansyah Roni Bawole Roosmarinto Roosmarinto, Roosmarinto Rosita, Gita Ruszayanthi, Dinda S.Pd. M Kes I Ketut Sudiana . Sabaria, Sabaria Sabilillah, Zico Saifuddin Saifuddin Samanhudi Samanhudi Sanaba, Hardiman Faramit Sardjito Eko Windarso, Sardjito Eko Sari, Fevi Catur Wulan Septin, Latiffah Indriana Septiyanto, Muhamad Dwi Setyaningrum, Desy Sistiyono Sistiyono, Sistiyono Siti Aminah Siti Aminah Siti Fatimah Siti Nuryani Pudyastuti Siti Nuryani, Siti Siti Qomariyah Siti Zulaikah Sitti Hartinah DS Soswati Ritonga, Duma Sri Sulpha Siregar Sujono Sujono Sukoco, Sampir Andrean Supriyono Supriyono Suyana Suyana Suyana Suyana, Suyana Syamsul Hadi Taufan, Aliftia Ullya Rahmawati Vembriani, Hanifah Fariuz Wahyu Widyantoro Warman Warman Waskito, Saptono Kusdanu Widiyanto, Wahyu Wijaya Widiyastuti, Riani Widyatmike Gede Mulawarman Wijaya, Daniel Aries Windarso, Sarjito Eko Wiraditya, Nur Eka Yulia Irma Mahmuda, Yulia Irma Zulfikar Husni Faruq