Optimum Doses of N, P, And K Fertilizers For Samosir Shallot Varieties in the Plains of the Lake Toba Region

Razali; Dolly Sojuangan  Siregar

doi:10.32734/jpt.v12i1.16245

Authors

Razali Universitas Sumatera Utara
Dolly Sojuangan Siregar Universitas Sumatera Utara

DOI:

https://doi.org/10.32734/jpt.v12i1.16245

Keywords:

shallots, Samosir variety, fertilizer, optimum dosage

Abstract

The surrounding plain of Lake Toba is well known as a shallot producing area in North Sumatra Province. Samosir variety is the mainstay variety of shallot farmers in this area. One of the efforts to increase the productivity of shallot variety Samosir is the application of fertilizer. The amount of N, P and K nutrients given to the Samosir variety shallot plants must be appropriate. This study aims to obtain the optimum dose of N, P and K fertilizers in the cultivation of shallot varieties Samosir planted in the rainy season in the plains around Lake Toba. This study consisted of 3 parallel experiments to determine the optimum N, P, K fertilization with a non-factorial randomized group design (RAK). P₂O₅ and K₂O fertilizers were applied 100% in the N rate experiment, N and K₂O fertilizers were applied 100% in the P rate experiment, and N and P₂O₅ fertilizers were applied 100% in the K rate experiment. Each experiment consisted of 5 levels, namely 0, 50, 100, 150, and 200% of the reference dose and each treatment was repeated 3 times so that there were 45 experimental plots. Parameters were: fresh weight of tubers and crowns at the end of the vegetative period, crown weight and wind-dried harvest tubers. The results obtained the optimum dose of N and P fertilizer recommendations are 154.22 kg N ha^-1 and 126.62 kg P₂O₅ ha^-1. For K fertilization does not give a quadratic response pattern so there is no optimum dose.

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References

Basundari F.R.A dan Krisdianto A.Y. 2020. Pengaruh Dosis Pupuk dan Jarak Tanam pada Budidaya Bawang Merah di Luar Musim Tanam di Desa Klaigit Kabupaten Sorong. J. Pangan. Vol 29 (1) : 13 -24.

Hutapea R.F., Z. Nsution dan Razali. 2015. Lokasi Penanaman Bawang Merah Lokal Samosir Berdasarkan Ketinggian Tempat di Daerah Tangkapan Air Danau Toba. Jurnal Agroekoteknologi. Vol.4. No.1, Desember 2015. (561) :1713 – 1720

Martinus, E., H. Hanum dan A. Lubis. 2017. Pengaruh pemberian pupuk kendang kerbau dan dosis pupuk anorganik terhadap hara N, P, K tanah, pertumbuhan dan produksi bawang merah (Allium ascalonicum L.). Jurnal Agroekoteknologi. 5(2):265–270.

Muliana, Anwar S., Hartono A., D. Susila A dan Sabiham S. 2018. Pengelolaan dan Pemupukan Fosfor dan Kalium pada Pertanian Intensif Bawang Merah di Empat Desa di Brebes. Jurnal Hortikultura Indonesia, 9(1), 27-37

Napitupulu D., S.E Nurzannah and D.R. Siagian. 2021. Sustainable shallot production achievement through analyzing the land suitability and introducing the proper agronomic cultivation practices in samosir regency. IOP Conf. Ser.: Earth Environ. Sci. 807 022073

Novita D., M. Assad dan T. Rinanda. 2019. Potensi Dan Peluang Pengembangan Sentra Produksi Bawang Merah Provinsi Sumatera Utara. Agrica (Jurnal Agribisnis Sumatera Utara) Vol.12 No.2/Oktober 2019

Razali, Z. Nasution, Rahmawaty and C. Hanum. 2023. Effect of Soil Texture on the Productivity of Two Shallot Varieties. Indonesian Journal of Agricultural Research Vol. 06, No. 01, 2023 p 43 – 50

Simatupang S. 2019. Kajian Jumlah Populasi dan Varietas Terhadap Produksi dan Keuntungan Usahatani Bawang Merah di Sumatra Utara. J. Hort. Vol. 29 No. 2, Desember 2019.

Sitompul, G.S.S., Y. Husna, dan Murniati. 2017. Pengaruh pemberian pupuk kandang dan KCl terhadap pertumbuhan dan produksi tanaman bawang merah (Allium ascalonicum L.). Jom Faperta 4(1): 1–12.

Sumarni, N., Rosliani, R., Basuki, R.S., dan Hilman, Y. 2012a. Respons Tanaman Bawang Merah terhadap Pemupukan Fosfat pada Beberapa Tingkat Kesuburan Lahan (Status P-Tanah). J. Hort. Vol. 22 No. 2: p 129-137.

Sumarni, N, Rosliani, R, dan Suwandi. 2012b. Optimasi Jarak Tanam dan Dosis Pupuk NPK untuk Produksi Bawang Merah dari Benih Umbi Mini di Dataran Tinggi. J. Hort. Vol. 22 No. 2, 2012

Suminar R., Suwarto. dan Purnamawati H. (2017). Penentuan Dosis Optimum Pemupukan N, P, dan K pada Sorgum (Sorghum bicolor [L.] Moench). Jurnal Ilmu Pertanian Indonesia, 22(1), 6-12. https://doi.org/10.18343/jipi.22.1.

Tando E. 2018. Upaya Efisiensi Dan Peningkatan Ketersediaan Nitrogen dalam Tanah Serta Serapan Nitrogen Pada Tanaman Padi Sawah (Oryza Sativa L.) (Review). Buana Sains Vol 18 No 2: 171 - 180, 2018

Widiana, S., Yunarti, A., Sofyan, E.T. dan Sara, D.S. (2020). Pengaruh Pupuk NPK Majemuk terhadap N-Total, Serapan N, dan Hasil Umbi Bawang Merah (Allium ascalonicum L.) pada Inceptisols Asal Jatinangor. Soilrens, Volume 18 No. 1, Januari – Juni 2020.

Yahumri, Shannora Y., Miswarti, Wilda M., Taufik H. dan Darkam M. 2022. Kajian Paket Teknologi Budidaya Bawang Merah Dataran Tinggi Musim Kemarau di Kabupaten Rejang Lebong. Journal of Agriculture and Human Resource Development Studies, pp. 31-38. Volume 3, Number 1 April 2022.