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The The Effect of Gamma Rays on Local Chilli Infected to Pepper Yellow Leaf Curl Virus Infection (Begomovirus) Tarigan, Rasiska; Hanafia, Diana Sofia; Sinuraya, Mariati; Barus, Susilawati; Marpaung, Agustina E; Murtiningsih, Rini; Sebayang, Amelia
Jurnal Fitopatologi Indonesia Vol 19 No 2 (2023): Maret 2023
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14692/jfi.19.2.74-82

Cabai merupakan salah satu komoditas hortikultura bernilai ekonomi tinggi di Indonesia. Cabai lokal Karo berbatang ungu merupakan cabai yang memiliki keunggulan produksi dan pertumbuhan vegetatif tinggi, namun sangat rentan terhadap penyakit virus keriting kuning oleh begomovirus. Salah satu upaya pengendalian begomovirus ialah dengan perakitan genotipe baru yang tahan melalui induksi iradiasi sinar gamma. Penelitian bertujuan mengkaji pengaruh iradiasi sinar gamma pada benih cabai lokal Karo berbatang ungu terinfeksi begomovirus untuk mendapatkan calon genotipe mutan yang tahan. Benih dari tanaman cabai terinfeksi begomovirus diberi perlakuan iradiasi sinar gamma dengan taraf dosis 150, 200, dan 250 Gy untuk mendapatkan tanaman mutan 1 (M1). Benih sehat dan benih berasal dari tanaman sakit tanpa perlakuan digunakan sebagai tanaman kontrol. Parameter yang diamati meliputi insidensi dan keparahan penyakit, AUDPC dan deteksi begomovirus pada tanaman M1 dan benih generasi kedua (M2). Perlakuan iradiasi sinar gamma taraf dosis 150 Gy pada benih cabai terinfeksi begomovirus menunjukkan rata-rata insidensi, keparahan penyakit, dan AUDPC paling rendah dibandingkan dengan perlakuan lainnya pada tanaman mutan M1 dan M2. Berdasarkan deteksi dengan PCR pada tanaman mutan M2, dari perlakuan dosis 150 Gy didapatkan 7 calon genotipe tahan begomovirus terbanyak di antara perlakuan lainnya.

Penerapan prosedur operasional standar budi daya tanaman jeruk ramah lingkungan untuk menekan infestasi kutu perisai merah Aonidiella aurantii (Maskell) (Hemiptera: Diaspididae): Implementation of environmentally friendly standard operational procedures for citrus plant cultivation to suppress infestation of red scale Aondiella aurantii (Maskell) (Hemiptera: Diaspididae) Wicaksono, Rudi Cahyo; Endarto, Otto; Istianto, Mizu; Budiarto, Kurniawan; Tarigan, Rasiska; Triasih, Unun; Wuryantini, Susi
Jurnal Entomologi Indonesia Vol 21 No 2 (2024): In Progress
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.21.2.93

Citrus is a popular horticultural crop planted in different areas in Indonesia. The needs for fruits increases every year, yet production cannot fulfill market demand. One of the contraints are the red scale pest attacks Aonidiella aurantii (Maskel). The implemeintation of standard operating procedure (SOP) in citrus cultural practices is expected to have effects on the population and intensity of red scale attacks. The research was carried out from January to August 2020 on farmer's orchards located at the center of citrus production in Batu, East Java, Indonesia. This experimental study used the research design theory method. The plots were devided into 2 conditions; first, the plots applied SOP, such as regular pruning, sanitation, and organic fertilizer application. While, the second was the conventional plots representing the common farmer maintenance, farmer of not pruning and cleaning weeds throughout the garden, and using NKP inorganic fertilizer. Every evaluated plot covered 1,500 m2, and 10 plants were systematically sampled from every plot. The parameters included numbers of attacked fruits, the abundance of natural enemies and attack intensity of A. aurantii that were taken from the cardinal directions. The results of the study showed that the implementation of SOP was able to significantly reduce population density and intensity of A. aurantii pest attacks and was able to increase the abundance of natural enemies and the quality of citrus fruit when compared to conventional citrus cultivation methods.

The response of Stecklings Age and Plant Spacing on Carrot Seed Quality and Production Manik, Fatiani; Tarigan, Rasiska; Barus, Susilawati
Journal of Tropical Horticulture Vol 3, No 2 (2020): October 2020
Publisher : Yayasan Pertanian Tropika Indonesia (YPTI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33089/jthort.v3i2.53

The quality of seed needs to be considered in carrot seed production to maintain its productivity. The research aims to find out the response of stecklings age and plant spacing on carrot seed quality and production. This research was held on July 2018 â€“ April 2019 in Berastagi field trial (1340 m MSL). The experiment used Randomized Complete Block Design (RCBD) with two factors, i.e., stecklings age (2 and 3 months) and plant spacing (25, 50, 75, and 100 cm), replicated four times (32 experiment units), 10 plants from each experiment units were taken as samples. The result showed that stecklings age and plant spacing were affected to plant vegetative and generative stages. The combination of 2-month stecklings and 50 cm plant spacing increased the number of secondary umble, if compared to cultivation, which was generally used by the farmer (3-month stecklings and 25 cm plant spacing). The best quality of carrot seed was obtained from the combination of 3-month stecklings and 50 cm plant spacing.

Farmersâ€™ And Retailersâ€™ Knowledge Level Associated with Pesticide Distribution and Application in Horticultural Production Centers in Karo Regency, North Sumatera Hermanto, Catur; Tarigan, Rasiska; Marpaung, Agustina E.; Hutabarat, Rina C.
Journal of Tropical Horticulture Vol 2, No 2 (2019): October 2019
Publisher : Yayasan Pertanian Tropika Indonesia (YPTI)

The description of the agriculture success is inseparable from the level of knowledge of retailers and farmers on the effective use of pesticides in the field. This study aimed at evaluating the relationship between the level of knowledge of retailers and farmers on the distribution and use of pesticides in vegetable production centers in Karo Regency. The research wasÂ Berastagi Experimental Farm from August to September 2016. The research method used in the survey was a cross-sectional study approach. The selection of districts was done purposively based on the highest number of retailers, the largest horticultural planting area, and the number of vegetable farmers per district. The number of research samples was 10 respondents per district. To analyze the relationship between variables, we used Spearman's range correction coefficient calculation and validity test using SPSS correlation 17. The results exhibited that the level of knowledge of retailers and farmers in Karo regency is low about the functions, codes, and formulations of all pesticides that have been distributed. The level of knowledge of vegetable farmers on the use of pesticides in Karo district is low, seen from the high level of use, increasing concentration of pesticides and high frequency of spraying, as well as mixing fungicides and insecticides 2 types of pesticides with different codes and active ingredients. The relationship of farmers' knowledge with their age, education and the length of farming experience significantly influenced the perception and attitude of using pesticides to control pest attacks in their lands of cultivation.

Keanekaragaman dan aktivitas serangga pengunjung pada bunga wortel Tarigan, Rasiska; Barus, Susilawati; Hutabarat, Rina C.; Sembiring, Perdinanta; Parhusip, Dorkas; Udiarto, Bagus Kukuh; Aryani, Dewi Sartika
Jurnal Entomologi Indonesia Vol 19 No 3 (2022): November
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.19.3.214

Pollinating insects act as agents for transferring pollen to the pistil that leads to the increase of quality seed production. Since carrot is propagation through seed, insect pollination are important in the reproduction of the crop. The purpose of this study was to observe the diversity and activity of pollinating insects on carrot flowers in the Experimental Garden of the Agricultural Technology Research and Assessment Installation (IP2TP) Berastagi. Scan sampling method was applied to record the pollinator diversity, while the foraging behaviour of the insects was observed using focal sampling. The number of insects were recorded, collected and preserved in ethanol 70%. Insect identification guideline book was used to identify the insects by comparing their morphology and physiology. The results showed that there were 8 insect species visiting the carrot flowers: Apis mellifera Linnaeus, Polyrachis sp., Coccinella sp., Rhagonycha sp., Muscidae sp., Chrysomya sp., Nephrotoma sp. and Tabanus sp. A. mellifera was found to have the highest intensity visiting the carrot flowers (21.6 ± 10.06)% while the lowest was demonstrated by Polyrachis sp. (12.6 ± 4.12)%. Also, A. mellifera was recorded to be the most active insect (11.84 ± 1.46 seconds/flower) with the number of flowers visited was 5,06 ± 1,46 flowers/minute. Polyrachis sp. has been revealed to have the longest stay on the flowers visited (49.24 ± 3.89 seconds/flower) with the number of flowers visited 1.21 ± 3.90 flowers/minute. The diversity of pollinating insect was found to be in intermediate level (H’ = 1.89).

Penerapan prosedur operasional standar budi daya tanaman jeruk ramah lingkungan untuk menekan infestasi kutu perisai merah Aonidiella aurantii (Maskell) (Hemiptera: Diaspididae): Implementation of environmentally friendly standard operational procedures for citrus plant cultivation to suppress infestation of red scale Aondiella aurantii (Maskell) (Hemiptera: Diaspididae) Wicaksono, Rudi Cahyo; Endarto, Otto; Istianto, Mizu; Budiarto, Kurniawan; Tarigan, Rasiska; Triasih, Unun; Wuryantini, Susi
Jurnal Entomologi Indonesia Vol 21 No 2 (2024): July
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.21.2.93

Citrus is a popular horticultural crop planted in different areas in Indonesia. The needs for fruits increases every year, yet production cannot fulfill market demand. One of the contraints are the red scale pest attacks Aonidiella aurantii (Maskel). The implemeintation of standard operating procedure (SOP) in citrus cultural practices is expected to have effects on the population and intensity of red scale attacks. The research was carried out from January to August 2020 on farmer's orchards located at the center of citrus production in Batu, East Java, Indonesia. This experimental study used the research design theory method. The plots were devided into 2 conditions; first, the plots applied SOP, such as regular pruning, sanitation, and organic fertilizer application. While, the second was the conventional plots representing the common farmer maintenance, farmer of not pruning and cleaning weeds throughout the garden, and using NKP inorganic fertilizer. Every evaluated plot covered 1,500 m2, and 10 plants were systematically sampled from every plot. The parameters included numbers of attacked fruits, the abundance of natural enemies and attack intensity of A. aurantii that were taken from the cardinal directions. The results of the study showed that the implementation of SOP was able to significantly reduce population density and intensity of A. aurantii pest attacks and was able to increase the abundance of natural enemies and the quality of citrus fruit when compared to conventional citrus cultivation methods.

Rice Husk Biochar and Foliar Fertilizer Application in Improving Growth and Production of Patchouli Plants (Pogostemon cablin Benth) Mayura, Eliza; Hariyanto, Bambang; Purnamasari, Neneng Ratna; Idris, Herwita; Tarigan, Rasiska; Hutabarat, Rina C.
Agro Bali : Agricultural Journal Vol 9, No 1 (2026)
Publisher : Universitas Panji Sakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37637/ab.v9i1.2619

Patchouli (Pogostemon cablin Benth) is a major essential oil crop widely used in pharmaceutical, perfumery, and aromatherapy industries. Despite Indonesia supplying most of the global demand, productivity and oil quality remain inconsistent across production regions. Although rice husk biochar and foliar fertilizers are individually known to enhance plant growth, their synergistic interaction and optimal combined dosage for patchouli production have not been clearly established, representing an important research gap. This study represents the first experimental attempt to determine the optimal combined dosage of rice husk biochar and foliar fertilizer for improving patchouli growth and oil yield. A Randomized Complete Block Design with two factors (three biochar levels and three foliar fertilizer levels) and 3 replicates was implemented from June to December 2023 in West Sumatra, Indonesia. Significant interaction effects were observed across major growth and yield parameters. The combination of 200 g plant⁻¹ biochar and 1 ml L⁻¹ foliar fertilizer produced the highest biomass accumulation and oil yield compared with other treatments. These findings provide empirical evidence of a synergistic fertilization effect and offer a cost-efficient nutrient management strategy to enhance patchouli productivity under smallholder farming conditions.

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