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All Journal Jurnal Ilmu Pertanian TERRA : Journal of Land Restoration PERTANIAN TROPIK
Alfassabiq Khairi
Universitas Teknologi Sumbawa
Agriculture, Biological Sciences & Forestry

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Influence of Organic Fertilizer Application on Durian (Durio zibethinus L.) Seedling Growth and Soil Nutrient Dynamics in Sumbawa Regency Alfassabiq Khairi; Ayu Purnamasari
Jurnal Ilmu Pertanian Vol 11, No 1 (2026): April
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.87207

Abstract

Durian is an economically important tropical fruit in Southeast Asia; however, its productivity remains low in dryland areas such as Sumbawa Regency due to poor soil fertility and suboptimal cultivation practices. This study aimed to evaluate the effect of organic fertilizer application on the growth performance of durian seedlings and soil nutrient status. The experiment was arranged in a Randomized Complete Block Design (RCBD) with eight replications and eight treatments, consisting of organic fertilizer doses ranging from 0 to 100 g/plant. Growth variables were observed at early (12 days after planting, DAP) and vegetative stages (30–90 DAP), including hypocotyl and epicotyl characteristics, root development, plant height, number of leaves, and stem diameter. Soil chemical properties (pH, N, P, K, Ca, and Mg) were analyzed before planting and after harvest. The results showed that organic fertilizer significantly improved seedling growth and soil nutrient status. At 12 DAP, moderate fertilizer application (40 g/plant) produced optimal hypocotyl and epicotyl development, while the highest dose (100 g.plant-1) enhanced root biomass and total plant weight. During the vegetative stage, 100 g.plant-1 consistently resulted in the highest plant height, number of leaves, and stem diameter. Soil analysis indicated that organic fertilizer significantly increased the availability of essential nutrients (N, P, K, Ca, and Mg), although soil pH remained stable across treatments. Correlation analysis revealed strong positive relationships between plant growth variables and nutrient availability, particularly nitrogen and phosphorus. In conclusion, the application of organic fertilizer, especially at 100 g.plant-1, effectively improves durian seedling growth and soil fertility. This approach represents a sustainable strategy for enhancing durian cultivation in dryland environments such as Sumbawa Regency. 
The effect of turmeric extract on the physiological responses of golden dragon fruit during postharvest storage Handoko; Ayu Purnamasari; Alfassabiq Khairi
Jurnal Online Pertanian Tropik Vol. 13 No. 1 (2026): JURNAL ONLINE PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jpt.v13i1.24431

Abstract

Golden dragon fruit (Hylocereus megalanthus L.) is an economically important tropical fruit belonging to climbing cacti, which are well adapted to tropical and subtropical environments and exhibit high drought tolerance. Despite its commercial value and nutritional benefits, postharvest quality deterioration remains a major challenge, leading to significant losses in texture, flavor, aroma, and shelf life. Turmeric (Curcuma longa L.) extract has been reported to possess antimicrobial and bioactive compounds, particularly curcuminoids, which may contribute to the preservation of fruit quality during storage. This study aimed to determine the optimal concentration of turmeric extract and to evaluate its effects on the postharvest quality of golden dragon fruit. The experiment was conducted in March 2025 at PT Daya Semesta Agro Persada, Banyuasin Regency, South Sumatra, Indonesia. Fruits were harvested at 30 days after anthesis and stored under controlled conditions at 26.50 ± 1.02 °C and 75.77 ± 5.45% relative humidity, with individual weights ranging from 350 to 500 g. A Completely Randomized Design with four replications was employed, and treatments consisted of turmeric extract dissolved in distilled water at concentrations of 0, 5, 10, and 15 g L⁻¹. Observed parameters included fruit texture, flavor, aroma, physiological weight loss, fruit decay (rotting), and shelf life. Results indicated that golden dragon fruits treated with the highest concentration of turmeric extract (15 g L⁻¹) and stored for nine days exhibited superior retention of texture, flavor, and aroma. Furthermore, this treatment significantly reduced physiological weight loss and fruit decay while effectively extending shelf life compared with lower concentrations and the control. The findings suggest that turmeric extract at 15 g L⁻¹ is an effective postharvest treatment to maintain quality and prolong the shelf life of golden dragon fruit, providing practical implications for commercial production and storage management.
Effects of Chicken Manure Rates on Growth and Yield of Tomato Varieties in Sumbawa Drylands Winda Suratin; Muamar Kadafi; Fahmi Dwilaksono; Ni Wayan Rusmawati; Nur’aini; Ayu Purnamasari; Alfassabiq Khairi
TERRA : Journal of Land Restoration Vol. 9 No. 2 (2026)
Publisher : BPFP Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/terra.9.2.61-69

Abstract

Tomato is an economically important horticultural crop valued for its nutritional quality and widespread consumption. The application of organic fertilizers, particularly fermented chicken manure, offers a sustainable approach to improving crop productivity and soil quality. This study aimed to evaluate the effects of tomato variety and fermented chicken manure dosage on growth, flowering, and yield performance. The experiment was conducted from October to December 2025 in Sumbawa Regency, Indonesia, using a split-plot design with three replications. Two tomato varieties(Gustavi F1 and Servo F1) were evaluated as the main plot factor, while four fermented chicken manure dosages (0, 50, 100, and 150 g plant⁻¹) were assigned as the subplot factor. Data were analyzed using analysis of variance (ANOVA), followed by Tukey’s HSD test at the 5% significance level. Tomato variety significantly influenced growth and yield performance, with Servo F1 showing superior early growth and yield attributes, whereas Gustavi F1 produced higher yield performance during the final harvest period. Fermented chicken manure application improved vegetative growth and yield components compared with the unfertilized control, with 100 g plant⁻¹ providing the most favorable response. Significant interactions between variety and fertilizer dosage were observed for several growth and yield parameters, indicating different varietal responses to fertilizer application. The combination of appropriate tomato varieties and fermented chicken manure application, particularly at 100 g plant⁻¹, enhanced tomato productivity and provides a sustainable nutrient management strategy under tropical growing conditions.
Co-Authors Ayu Purnamasari Ayu Purnamasari Fahmi Dwilaksono Handoko Muamar Kadafi Ni Wayan Rusmawati Nur’aini Winda Suratin