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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Buletin Agrohorti Jurnal Hortikultura Indonesia (JHI) Journal of Tropical Crop Science Journal of Agrosociology and Sustainability Policy Brief Pertanian, Kelautan, dan Biosains Tropika
Krisantini
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Agriculture, Biological Sciences & Forestry Humanities Chemistry Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Energy Environmental Science Medicine & Pharmacology Social Sciences

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Journal : Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)

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Changing rainfall and its adaptation strategies on tea plantation in West Java, Indonesia Fatawa, Muhammad Ihsan; Santosa, Edi; Hapsari, Dhika Prita; Krisantini
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 51 No. 2 (2023): Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24831/ija.v51i2.47081

Abstract

Climate change, i.e., changing rainfall refers to drought and excess rainfall, is known to affect the growth and yield of tea production in many regions. However, research on the impact of climate change on tea plantations in Indonesia is still limited. The study aimed to evaluate the impact of changing rainfall on the productivity of tea plantation at Cianjur, West Java. The data was collected from interviews, field data, and company records from April to July 2022. The results showed that changing rainfall of both limited rainfalls during El Nino and excess rainfall during La Nina affected the tea production. Annual tea productivity declined during both climatic events. Shortage of water during El Nino primarily reduced crop growth, while excess rainfall during La Nina reduced the capacity of tea pickers and increased labor for crop maintenance. Failure to adapt to the direct and indirect impacts of climate change could contribute to declining tea production in Indonesia. Thus, comprehensive action is needed including capacity building in human resources, water management, and microclimate adaptation such as shading plants and tolerant clones to sustain tea production under climate change events.
Fertilizer efficiency of ammonium (NH4+) and nitrate (NO3-) by fertigation in shallot production Amanah, Mar'atus Sholihatul; Susila, Anas Dinurrohman; Krisantini
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 53 No. 1 (2025): Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24831/jai.v53i1.58409

Abstract

Agronomic practices in Indonesia mostly still use ammonium as the primary source of nitrogen (N), whereas ammonium concentrations at certain levels can cause plant toxicity. The selection of the suitable N form (NH4+ and NO3-), especially by the fertigation method, is expected to increase the efficiency of N fertilization. This research aimed to obtain the appropriate source of NH4+ and NO3- to increase production and efficiency of fertilization in shallots. The experiment used a non-factorial randomized complete block design with four replications and six nitrogen treatments: without N, ammonium sources (urea, ZA), nitrate source (calcium nitrate), and combination of ammonium and nitrate (NPK Mutiara 16-16-16, calcium ammonium nitrate). The fertilizer doses contain N in equivalent levels, i.e., 167.9 kg N ha-1. The results showed that ZA increased the chlorophyll content of leaves and N content of plant tissue, while calcium nitrate increased the size and weight (fresh and dry) of bulb per plant. The highest recovery and agronomy efficiency was obtained in the ZA application, while the highest physiological efficiency and partial factor productivity were in calcium nitrate. Therefore, nitrate has the potential for shallot cultivation because it can increase production without accumulation in the bulbs. Keywords: Allium cepa; drip irrigation; nitrogen fertilizer; nitrogen form; NUE
Co-Authors Ade Wachjar Amanah, Mar'atus Sholihatul Anas Dinurrohman Susila Christian, Ramot Dhika Prita Hapsari Edi Santosa Elke Camelia Halim Fatawa, Muhammad Ihsan Ketty Suketi Megayani Sri Rahayu Muthi’ah Khairun Nisa Ni Made Armini Rahayu, Megayani Ramdani, Adrian Ramdani, Adrian Zulwi Sari, Allice Fajri Chynthia Tina, Siti Agus