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Zahlul Ikhsan
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Redaksi Jurnal Riset Perkebunan.Program Studi Agroekoteknologi, Kampus III Fakultas Pertanian. Jl. Sungai Kambut, Kec. Pulau Punjung, Kab. Dharmasraya, Provinsi Sumatera Barat.
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Jurnal Riset Perkebunan (JRP)
Published by Universitas Andalas
ISSN : 2723780X     EISSN : 28289285     DOI : 10.25077
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Jurnal Riset Perkebunan (JRP) merupakan wadah untuk mempublikasi hasil-hasil penelitian di bidang perkebunan. JRP berada dibawah Jurusan Budidaya Perkebunan Fakultas Pertanian Universitas Andalas. Specific topics of interest include: 1. Agronomi 2. Pemuliaan Tanaman 3. Perlindungan Tanaman 4. Ilmu Tanah 5. Pengelolaan Sumber Daya Lahan 6. Pengelolaan Sumber Daya Lingkungan 7. Pascapanen 8. Sosial Ekonomi Perkebunan
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Agronomi dan Ilmu Tanaman
Articles 120 Documents
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Genotypic Responses of Patchouli (Pogostemon cablin Benth) to Water Stress: Implications for Drought-Resistant Cultivation Sri Nurmayanti; Muhammad Tahir; Dimas Prakoswo Widiyani; Dimas Prayoga
Jurnal Riset Perkebunan Vol. 6 No. 1 (2025): Jurnal Riset Perkebunan (JRP)
Publisher : Jurusan Budidaya Perkebunan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrp.6.1.11-17.2025

Abstract

Patchouli is one of the C3 plants that can grow without full sunlight. Photosynthesis in C3 plants is greatly influenced by CO2 content. Unpredictable climate fluctuations can affect the productivity of this plant. Continuous rain or long droughts can affect the photosynthesis process of patchouli plants.  This study aims to evaluate the effect of water stress on the morphological and physiological characteristics of patchouli plants (Pogostemon cablin Benth). The study used a Factorial Randomized Block Design (RBD) consisting of two factors. The first factor was four genotypes of mutated patchouli: Genotypes 7, 8, 9, and 10 (as a control). The second factor was different field capacity treatments (60%, 80%, 100%, and 120%).  Observation parameters include physiological parameters, namely the number of leaves, and morphological parameters, namely main stem diameter and number of branches.  The results showed that water stress significantly affected the number of leaves, main stem diameter, and branches.  Genotype 7 showed the best growth in the parameters of main stem diameter and number of branches. Genotype 7 showed a 25% larger main stem diameter and 10% more branches at 100% field capacity than other genotypes.
Microfungi Associated with Leaf Spot of Cocoa in Pahang, Malaysia Mohd Zainudin, Nur Ain Izzati; Rosli , Muhamad Najmi Haikal; Wan Ahmad Kamal, Wan Halimah As-Sa’adiah; Azahar, Nuráin; Nordin, Nor Aisyah; Salleh, Suhaida; Yusof, Mohd Termizi; Ikhsan, Zahlul
Jurnal Riset Perkebunan Vol. 6 No. 1 (2025): Jurnal Riset Perkebunan (JRP)
Publisher : Jurusan Budidaya Perkebunan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrp.6.1.36-44.2025

Abstract

Crop diseases caused by fungal infections have significantly impacted cocoa production, leading to substantial economic losses due to ineffective disease management strategies. Leaf spot disease, in particular, threatens cocoa yield and quality, necessitating accurate identification of its causal agents for effective control measures. This study aimed to isolate, identify, and assess the pathogenicity of fungal species associated with cocoa leaf spot disease. A total of 45 microfungal isolates were obtained from infected cocoa leaves and identified to the genus level, including Aspergillus, Clonostachys, Colletotrichum, Curvularia, Diaporthe, Fusarium, Lasiodiplodia, and Nigrospora species. Pathogenicity tests revealed that 12 isolates induced lesions on cocoa leaves, confirming their pathogenic potential. Molecular identification using internal transcribed spacer (ITS) sequence analysis verified the species identity of the pathogenic isolates, with Lasiodiplodia theobromae (B3418) exhibiting the highest virulence, producing lesions of 3.17 ± 0.76 mm. These findings highlight the diverse pathogenic fungi associated with cocoa leaf spot disease. This study provides valuable insights into fungal pathogenicity and can contribute to the development of effective disease management strategies, which can reduce fungal infections and improving cocoa productivity.
Comparison of Various Control Techniques for Clove Stem Borer (Nothopeus hemipterus) in Samigaluh, Kulon Progo Sidiq, Muhamad Fajar; Wisnubroto, Muhammad Parikesit; Handru, Alan; Avianto, Yovi; Putri, Diyona
Jurnal Riset Perkebunan Vol. 6 No. 1 (2025): Jurnal Riset Perkebunan (JRP)
Publisher : Jurusan Budidaya Perkebunan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrp.6.1.25-35.2025

Abstract

The clove stem borer (Nothopeus hemipterus) is a major pest causing significant economic losses in clove cultivation. In Samigaluh, most farmers rely on chemical pesticides for control. However, essential oils and entomopathogenic fungi offer safer and more sustainable alternatives. This study aimed to evaluate their effectiveness and determine the most suitable control method. The research was conducted in Kayugedhe Hamlet, Samigaluh, Kulon Progo, Yogyakarta, from April to September 2022. A randomized completely block design was used with different pest control treatments, including chemical pesticides (fipronil, acephate, and profenofos), botanical pesticides (10% neem oil and 10% citronella oil), biological pesticides (Beauveria bassiana at 1 × 10⁸ CFU/mL), and a control. The pesticides were applied using a hydraulic pump and a wax-sealing method on larval entry holes. Larval mortality was recorded weekly for four weeks. The results showed that the application of entomopathogenic fungi (Beauveria bassiana) and citronella oil led to larval mortality rates of 78% and 75%, respectively, which were comparable to the effectiveness of fipronil (80%) and acephate (81%). In contrast, N. hemipterus larvae exhibited lower susceptibility to profenofos, with a mortality rate of only 47%, suggesting potential resistance. These findings indicate that B. bassiana and citronella oil extract could serve as effective and environmentally friendly alternatives for controlling the clove stem borer.
Weeds Vegetation in Rubber Plantations at Different Altitudes in Indragiri Hulu District, Riau Province, Indonesia Dinny Cahyantika; Novita Hera; Irwan Taslapratama
Jurnal Riset Perkebunan Vol. 6 No. 1 (2025): Jurnal Riset Perkebunan (JRP)
Publisher : Jurusan Budidaya Perkebunan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrp.6.1.45-55.2025

Abstract

The rubber plantations owned by smallholders in Indragiri Hulu Regency are inseparable from management problems, especially the management of weeds. This study identifies and analyzes dominant weed types at two different heights, namely 6 m asl and 28 m asl. In this study, the parameters of the observations and calculations are important value indexes such as density, frequency, dominance, and significant values. Then, there is the diversity index or diversity index and similarity index. The method used in this study is a field survey method with different altitude levels, employing purposive sampling in rubber plantation areas in Sekip Hulu Village, Rengat District, Indragiri Hulu Regency. The results showed that based on the SDR value, the 3 most dominating weeds in rubber plantations at an altitude of 6 m asl were Asystasia gangetica, Eleusine indica and Syzygium polyanthum which each obtained SDR values of 50.05%, 12.11% and 8.01%. , while at an altitude of 28 m asl, it was dominated by Ottochloa nodosa, Clidemia hirta, and Melastoma malabathricum, which respectively obtained SDR values of 56.34%, 15.39%, and 9.97%. Based on the value of diversity or diversity value, it shows that, as the altitude increases, the number of weed species found decreases from a height of 6 masl to 28 m asl. The importance of this weed vegetation study lies in selecting the most appropriate control method, whether mechanical, chemical, or biological, in Rubber plantations.
Monitoring of Pests on Palm Oil (Elaeis guineensis Jacq.) in Kuantan Singingi Regency, Indonesia Sigalingging, Govand; M. Amrul Khoiri; Pajri Ananta Yudha
Jurnal Riset Perkebunan Vol. 6 No. 2 (2025): Jurnal Riset Perkebunan (JRP)
Publisher : Jurusan Budidaya Perkebunan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrp.6.2.65-73.2025

Abstract

The oil palm plant is one of the plantation commodities that plays an important role in economic activities in Indonesia. Cultivating oil palm plants as monocultures causes the environment to be favorable for insect pests to attack the plants. To overcome this, it is necessary to observe the types and populations of pests on palm oil plants. This research aimed to obtain information and data regarding the types and populations of pests and insects on palm oil plants (Elaeis guineensis Jacq.) in Kuantan Singingi Regency. The research was conducted from June to August 2024. The research method was a survey method, and plant samples were taken randomly (purposive random sampling). There were 9 sample plots, where each plot was observed on 13 plants, and the total number of plants observed was 117. The observed parameters were the condition of the agroecosystem, the type of pest on the palm oil plants, the percentage of attacked clumps, the percentage of attacked plants, and the intensity of pest attack. The result showed that the found pests were Metisa plana, Orgyia sp., Oryctes rhinoceros, Setora nitens, and Tirathaba mundella. The dominant pests were Metisa plana (208 individuals), Setora nitens (98 individuals), Orgyia sp (129 individuals), and Tirathaba mundella (42 individuals). There were also non-pest insects, Spinaria spinator, Utethesia pulchelliodes, and Creatonotos gangis.
Analysis of the Impact of Rubber Latex Price Decline on the Welfare of the Community in Surulangun Village, Rawas Ulu Subdistrict, Indonesia Febrina Nur Annisa; Widya Analisa
Jurnal Riset Perkebunan Vol. 6 No. 2 (2025): Jurnal Riset Perkebunan (JRP)
Publisher : Jurusan Budidaya Perkebunan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrp.6.2.56-64.2025

Abstract

The price of rubber latex is one of Indonesia’s leading plantation commodities. This phenomenon directly affected the welfare of farmers, particularly in Surulangun Village, North Musi Rawas Regency, where the majority of residents depend on rubber plantations for their livelihood. This study aims to analyze the impact of falling rubber prices on farmers’ income, consumption patterns, and adaptation strategies, while also providing relevant policy recommendations. The research employed a mixed-methods approach. Quantitative data were collected through a survey of 40 household heads of rubber farmers, while qualitative data were obtained through in-depth interviews, field observations, and documentation. The sampling technique used was purposive sampling, with the criteria of farmers who had been working for at least five years. Quantitative data were analyzed using the Wilcoxon Signed-Rank Test to examine the differences before and after the price decline, whereas qualitative data were analyzed thematically with triangulation validation. The results revealed a significant decline in three main welfare indicators. The average income of farmers decreased from IDR 3,000,000–5,000,000 to IDR 1,500,000–2,000,000 per month. Food consumption dropped by up to 37.5%, with a shift toward cheaper staple foods. Non-food consumption, such as education and healthcare, also declined drastically. Most farmers coped with the situation by engaging in side jobs, such as daily labor or small-scale trading. The study concludes that the decline in rubber prices has had a serious impact on farmers’ household welfare. Policy implications include the need for income diversification, the establishment of a minimum rubber price, food subsidies, and the strengthening of farmers’ institutional capacity to build more sustainable rural economic resilience.
Impact of Sawdust and Chicken Manure Compost Mixture on The Growth and Yield of Sallot (Allium ascalonicum L.) Silvia, Silvia Permata Sari; Herawati, Netti; Nurfalah, Resti; Kusumawati, Aries; Hervani, Dini
Jurnal Riset Perkebunan Vol. 6 No. 2 (2025): Jurnal Riset Perkebunan (JRP)
Publisher : Jurusan Budidaya Perkebunan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrp.6.2.74-84.2025

Abstract

Shallot (Allium ascalonicum L.) is a high-value horticultural commodity in Indonesia, with demand increasing annually. To meet this demand, enhancing both the quality and quantity of shallot production through optimal fertilization is crucial. This study investigates the effect of a compost combination of sawdust and chicken manure on shallot growth and yield. The research was conducted in Nagari Koto Laweh, X Koto Sub-district, Tanah Datar Regency, from May to August 2025. A Randomized Complete Block Design (RCBD) with five treatments and three replications was used in the experiment. Data were analyzed using the F-test and Duncan’s New Multiple Range Test (DNMRT). The results revealed that a 1:3 sawdust-to-chicken manure ratio was the most effective, significantly increasing plant height (41.50 cm), leaf number (45.75 pieces), bulbs count (10.83 bulbs), bulb diameter (29.65 mm), fresh and dry bulb weight per clump (97.15 g/clump), dry bulb weight per hectare (18.11 tons/ha), and pest and diseases (Thrips tabaci, Spodoptera exigua, Delia antiqua, Fusarium oxysporum, Peronospora destuctor, Alternaria porri). These findings indicate that the compost combination not only boosts shallot production but also has the potential for broader application in other crops such as oil palm, sugar palm, and cocoa, offering an eco-friendly alternative to chemical fertilizers and contributing to sustainable agriculture practices by improving soil fertility.
Comparison of Fresh Palm Fruit Bunch Production Estimates using The Black Bunch Fruit Census Method Between The Costarica and Sriwijaya Varieties Maulana, Abbi; Afriani, Siti Rakhmi; Junainah; Yusticia, Stenia Ruski; M. Rezky Galang; Bagas Saputra
Jurnal Riset Perkebunan Vol. 6 No. 2 (2025): Jurnal Riset Perkebunan (JRP)
Publisher : Jurusan Budidaya Perkebunan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrp.6.2.85-91.2025

Abstract

Palm oil is a strategic commodity that plays an important role in supporting Indonesia's economic growth. In several companies, different oil palm varieties are cultivated, including Costarika and Sriwijaya 1. Production fluctuations among these varieties underscore the importance of applying the black bunch census method in yield estimation. This study aims to estimate the future production of Fresh Fruit Bunches (FFB) between the Costarika and Sriwijaya 1 varieties. The research method employed was the black bunch census conducted on both varieties (Costarica and Sriwijaya 1). The observed parameters included the average bunches per palm and tonnage of the two varieties. Data analysis was performed using normality tests and independent t-tests. The results showed that the Sriwijaya 1 variety had the highest average bunches per palm at 4.36 and the highest production tonnage at 181,684 kg. However, further independent t-tests indicated that there was no significant difference between the Costarika and Sriwijaya 1 varieties in terms of average bunches per palm and total tonnage produced.
Inheritance Pattern and Cross-Resistance Assessment of Flonicamid Resistance in the Biological Control Agent Chrysoperla carnea (Neuroptera: Chrysopidae) Khan, Arbaz; Sarfraz Ali Shad
Jurnal Riset Perkebunan Vol. 6 No. 2 (2025): Jurnal Riset Perkebunan (JRP)
Publisher : Jurusan Budidaya Perkebunan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrp.6.2.92-103.2025

Abstract

A field-collected laboratory population of Chrysoperla carnea, a polyphagous predator important in integrated pest management, was subjected to flonicamid selection pressure for three generations using a micro-droplet topical bioassay. Following selection, the flonicamid-selected strain exhibited 6.83-fold resistance (LC50 = 260,730 ppm; 95% FL = 148,090–1,561,600 ppm) compared with the unselected strain (LC50 = 38,122 ppm; 95% FL = 23,259–138,440 ppm). Reciprocal crosses between resistant and susceptible parents produced overlapping 95% FLs, demonstrating autosomal inheritance with no detectable maternal or sex-linked effects. Dominance metrics indicated incomplete to partial dominance of resistance (DLC = 0.60 for F1; DLC = 0.55 for F2). Effective dominance estimates at four diagnostic doses (27,875; 62,500; 125,000; 272,000 ppm) yielded ED values of 0.53, 0.79, 0.91, and 0.88, respectively, showing increased dominance at higher doses. Chi-square goodness-of-fit tests rejected the null hypothesis of monogenic inheritance (p < 0.05), confirming a polygenic resistance model. Cross-resistance bioassays further revealed substantial co-selection effects, with resistance ratios of 24.35-fold for acetamiprid, 23.58-fold for triazophos, and 15.17-fold for deltamethrin, comparing initial and final LC50 values that showed non-overlapping 95% FLs. These results indicate that flonicamid resistance in C. carnea is a polygenic, autosomal, and incompletely to partially dominant trait. The findings provide genetic foresight for incorporating resistant predator populations into insecticide-compatible IPM programs and highlight the importance of mode-of-action-based chemical rotation to mitigate resistance co-selection in beneficial predator populations.
Land Suitability Evaluation for Sugar Palm (Arenga pinnata Merr.) in Nagari Labuah Gunuang, West Sumatra, Indonesia Syahputri, Rispiza; Ikhsan, Zahlul; Rezki, Dewi
Jurnal Riset Perkebunan Vol. 6 No. 2 (2025): Jurnal Riset Perkebunan (JRP)
Publisher : Jurusan Budidaya Perkebunan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrp.6.2.104-118.2025

Abstract

An evaluation of the suitability of land for sugar palm cultivation was conducted to assess the land's ability to support maximum growth and production. Palm cultivation in Nagari Labuah Gunuang, Limapuluh Kota Regency, has not been optimal because the plants still grow wild without regard to land suitability. This study aims to determine the actual and potential land suitability classes and map land suitability for palm cultivation development. This study employed a field survey using the purposive sampling method on four land units, with sample point criteria selected based on overlay results and representing each land map unit. Additionally, soil sampling was conducted at a depth of 0–60 cm, followed by laboratory analysis. Land suitability was evaluated using a matching method that matched land characteristics with the requirements for palm tree growth. Spatial analysis was then performed using ArcGIS software to produce a land suitability map. The results showed that land suitability classes in Nagari Labuah Gunuang varied. Land units 1 and 4 were classified as unsuitable because they had a slope of more than 40%, while land units 2 and 3 were classified as marginally suitable with a slope of 15–25%. The main limiting factor on land units 2 and 3 is the risk of erosion. After improvement measures such as terrace construction and planting of ground cover crops, the potential suitability class of land units 2 and 3 can be upgraded to moderately suitable. The development of sugar palm cultivation in Nagari Labuah Gunuang can be carried out on land units 2 and 3.

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