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All Journal Jurnal Ilmu Pertanian Indonesia Agromet Buitenzorg: Journal of Tropical Science
Yudi Riadi Fanggidae
Research Center for Climate and Atmosphere, National Research and Innovation Agency
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Environmental Science Health Professions

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Pertumbuhan Bibit Cendana (Santalum album L.) dengan Inang Primer pada Intensitas Radiasi Berbeda Yudi Riadi FanggidaE; Impron Impron; Tania June
Jurnal Ilmu Pertanian Indonesia Vol. 25 No. 3 (2020): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18343/jipi.25.3.478

Abstract

The primary host of sandalwood seeds (Santalum album L.) which is widely used in the nursery process is Alternanthera sp. However, the local name given to this primary host is same as that given to Portulaca sp. The same local name for these two-different species may cause mistakes in the use of the primary host during the cultivating process of sandalwood. Meanwhile, the ability of the Portulaca sp. as the primary host is unknown. Information about the right radiation intensity of the sandalwood seedling is still limited. The study aims to analyze the growth of sandalwood seedlings grown with primary host of Alternanthera sp. and Portulaca sp. at different radiation intensities. The completely randomized design with two treatments factor were used, namely differences in shade levels (without shade, 25, 50, and 75%) and differences in the types of primary hosts. The result showed that the primary hosts of Alternanthera sp. have the best growth for sandalwood seeds compared to sandalwood seedlings planted with Portulaca sp. The shading must be adjusted to the type of primary host. Sandalwood seeds grown with Alternanthera sp. as primary hosts grow best at 50% and 75% paranet shade conditions, in radiation range of 9.86–12.17 MJ/m2/day. Sandalwood seeds planted with Portulaca sp. as a primary host grow best in 25% paranet shade, that is at average radiation of 13.62 MJ/m2/day. The use of Alternanthera sp. and shade provision (50–75%) is highly recommended in sandalwood seedlings. Keywords: haustoria, hemiparasite, primary host plant, sandalwood, symbiosis
Evapotranspiration of Sandalwood (Santalum Album L.) Seedlings with Several Primary Host Plants Yudi Riadi FanggidaE; Impron Impron
Agromet Vol. 32 No. 1 (2018): JUNE 2018
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (29.696 KB) | DOI: 10.29244/j.agromet.32.1.21-30

Abstract

Sandalwood (Santalum album L.) seedlings planted with different primary host plants should require different amounts of water. In practice, however, sandalwood seedlings with different primary host plants are irrigated with similar amount of water. Thus, it is interesting to study the amount of water expressed as evapotranspiration for the sandalwood seedlings and their primary host plants because there are hemiparasitic symbiosis plants in one planting medium. The purpose of this research was to compare and analyse evapotranspiration (ET) and water use efficiency (WUE) of sandalwood seedlings with different primary host plants, namely chili (Capsicum annum), krokot (Alternanthera sp.), and sengon (Albizia chinensis). The experiment was conducted in a greenhouse and designed using completely randomized design. Results showed that different primary host plants already influenced ET at 6 days after sowing of primary host (DASH). The sandalwood seedlings with chili and krokot as primary hosts, had the highest ET during 6-22 DASH. From 24 to 36 DASH, ET for all types of host plants were similar. After 36 DASH, ET of sandalwood seeding with primary host sengon increased, and had the highest ET. Sandalwood seedling with primary host krokot had the highest WUE to produce sandalwood above ground biomass with value 0.3 g/l during the 0-3 weeks after sowing of primary host (WASH), 0.6 g/l during the 3-6 WASH, and 0.9 g/l during 6-9 WASH.
Keragaman Curah Hujan Antar Tahun dan Dampaknya terhadap Pola Tanam di Kabupaten Malang, Indonesia Aris Pramudia; Suciantini Suciantini; Elsa Rakhmi Dewi; Dede Dirgahayu Domiri; Erni Susanti; Rita Indrasti; Robi Muharsyah; Darmawan Lahru Riatma; Abriani Fensionita; Yunita Fauziah Rahim; Misnawati Misnawati; Yudi Riadi Fanggidae
Buitenzorg: Journal of Tropical Science Vol 3 No 1 (2026): Buitenzorg: Journal of Tropical Science
Publisher : Innovation Centre for Tropical Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70158/buitenzorg.v3i1.40

Abstract

El Niño and La Niña events typically affect rainfall patterns and water availability for plants, especially in rainfed and upland farming systems. This study examines year-to-year variations in rainfall associated with El Niño and La Niña events, as well as their impacts on potential planting seasons and the management of food crop planting patterns in Malang Regency. The rainfall data used in this analysis are from the Karangploso and Karangkates climatology stations for the period 2012-2024. The analysis reveals that over the past 13 years, El Niño events have not shifted the duration of the dry or rainy seasons in Lawang Subdistrict, nor have they reduced the rainy-season duration by 1 decade compared to normal conditions in Donomulyo Subdistrict. However, La Niña events can prolong the rainy season by 3-13 decades in Lawang Subdistrict or 2-14 decades in Donomulyo Subdistrict. The average potential planting time at the research location is 210 days in Lawang Subdistrict and 240 days in Donomulyo Subdistrict, posing a significant risk of planting rice across two growing seasons. By selecting adaptive crops and managing planting patterns, it could be possible to plant three times using a rice-corn-beans pattern during the planting seasons in the Lawang Subdistrict or a rice-corn and rice-beans pattern in the Donomulyo Subdistrict. During La Niña events, crop pattern management can be more flexible, and planting intensity can be increased by 3-4 times through effective crop pattern management.
Co-Authors Abriani Fensionita Aris Pramudia Darmawan Lahru Riatma Dede Dirgahayu Domiri Elsa Rakhmi Dewi Erni Susanti Impron Impron Misnawati Misnawati Rita Indrasti Robi Muharsyah Suciantini Suciantini Tania June Yunita Fauziah Rahim