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Rustam Abd Rauf
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Gedung Fakultas Pertanian, Universitas Tadulako, Jl. Soekarno Hatta No.KM. 9, Tondo, Mantikulore, Kota Palu, Sulawesi Tengah 94148
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INDONESIA
AGROLAND: The Agricultural Sciences Journal
Published by Universitas Tadulako
ISSN : 24077585     EISSN : 24077593     DOI : https://doi.org/10.22487/agroland
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Agroland: The Agricultural Sciences Journal (Agroland: The Agr. Sci. J.) is an Open Journal System published by Tadulako University and Indonesian Society for Major in Agriculture (PISPI), is published twice a year in June and December. This journal provides a multi-disciplinary and international platform in which young and senior researchers can present their work on all aspects of tropical agriculture to other researchers, policymakers, and professionals. The journal welcomes primary research papers, reviews, and short communications on tropical Agriculture research. Subject areas suitable for publication include, but are not limited to the following fields: Agronomy & Crop Science, Agribusiness, Agriculture economics, Agriculture Engineering, Agriculture genomics, Genetics & Plant Breeding, Horticulture, Hydrology, Bioclimatology, Plant protection, Plant biochemistry and biotechnology, Seed technology and research, Soil science research, Soil restoration, Weed biology, Water management.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Agronomi dan Ilmu Tanaman
Articles 5 Documents
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Search results for , issue "vol 12 no 2 (2025): december" : 5 Documents clear
Analysis of Cost Structure Allocation Against Financial Feasibility in the Bumi Mutiara Industry in Palu City Adam, Adinda Elfara Rizki Adam Fara
AGROLAND The Agricultural Sciences Journal (e-Journal) Vol 12 No 2 (2025): December
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/agroland.v12i2.2724

Abstract

Ground coffee, as a processed product of coffee beans, stands as an agricultural commodity with significant market prospects, driven by the proliferation of cafes, coffee stalls, and modern coffee beverage trends. The sales potential of this processed coffee offers attractive profitability, fostering the growth of the coffee processing sector, one example being the Bumi Mutiara Industry. This research focuses on evaluating the financial feasibility of the Bumi Mutiara Ground Coffee Industry in Palu City. The aspects reviewed include capital structure, financing composition, production techniques, raw material procurement strategy, and product marketing. The financial analysis results indicate a very promising outlook for this venture. The calculated Net Present Value (NPV) is a positive Rp187,500,267.00. The Internal Rate of Return (IRR) of 24% significantly exceeds the benchmark interest rate (24% > 12%). Furthermore, the Net Benefit-Cost Ratio (Net B/C) is 1.41, which is greater than 1. Concurrently, the Payback Period (PP) for the business is recorded at 3 years and 3 months. Based on all these financial feasibility indicators, it is concluded that the Bumi Mutiara Ground Coffee Industry in Palu City is financially viable for both continuation and future development.
Detection Trend of Meteorological Drought Using Standardized Precipitation Index (SPI) in The Dolago Watershed, Central Sulawesi Sutapa, I Wayan; Arafat, Yassir; Rustiati, Nina Bariroh; Patricia, Ayu
AGROLAND The Agricultural Sciences Journal (e-Journal) Vol 12 No 2 (2025): December
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/agroland.v12i2.2708

Abstract

Drought events worldwide are increasingly becoming a critical issue due to their negative impacts on water resources. Therefore, it is necessary to understand the characteristics of drought to plan disaster mitigation measures. This study detected meteorological drought in the trend domain using the Standardized Rainfall Index (SPI) in the Dolago River Basin. Monthly rainfall data for 20 years (2003-2022) from two meteorological stations (Dolago Bendung and Dolago Padang) were used in this study. SPI was used to reconstruct drought events and characterize the trend of drought events. Drought frequency was estimated as the ratio of the specified severity to the total number of events. Changes in drought events were detected using the non-parametric Man-Kendall trend test. The main drought conditions detected by SPI are severe drought, moderate drought, near normal, moderate wet, very wet, and very wet conditions. From these results, the SPI value fluctuated greatly from month to month. In the first decade (2003-2012), many normal conditions occurred, and changes from wet to dry months did not occur suddenly. In contrast to the second decade (2013-2022), the normal conditions are reduced from the first decade and the weather conditions change rapidly. The SPI value, which represents seasonal conditions, shows that dry conditions in various categories are more prominent in the second decade, while wet conditions are almost the same between the first and second decades. Trend analysis shows that most SPI values ??experience a decreasing/negative trend, but not all are significant at the 90% level. The SPI value is significant in April (-1.65) and December (-3.41). It is recommended that these findings be adopted for decision-making related to the drought early warning system in the watershed
Resistance of Ten Local Rice Cultivars From Central Sulawesi to Nephotettix virescens (Hemiptera: Cicadellidae) Asrul, Asrul; Wahid, Abd.; Zulkifly, Zulkifly; Arsih, Desi Wahyuni
AGROLAND The Agricultural Sciences Journal (e-Journal) Vol 12 No 2 (2025): December
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/agroland.v12i2.2663

Abstract

The green leafhopper (Nephotettix virescens) is the primary vector of the tungro virus, posing a significant threat to rice productivity in Indonesia. The utilization of local cultivars with natural resistance represents a sustainable strategy to mitigate such biotic constraints. This study aims to evaluate the resistance levels of ten local rice cultivars from Central Sulawesi against N. virescens using the International Rice Research Institute (IRRI) standard evaluation. The assessment covers parameters such as incubation period, symptom severity, and disease index (DI) to classify phenotypes and recommend priority genotypes. The research was conducted from April to September 2025 at the Plant Pest and Disease Green House, Faculty of Agriculture, Tadulako University, utilizing a Randomized Block Design (RBD) with three replications. The ten cultivars tested originated from Ampana (Gondu, Masai, Kamba Bulili, and Kalendeng), Sigi (PM and Kas), and Banggai (Habo, Sampara, Dongan, and Uva Buya). Results indicated that the symptom incubation period ranged from 5 to 7 days after infection (DAI). Based on the disease index (DI) observed from 14 to 56 DAI, significant genetic response diversity was found among the cultivars. The cultivar Kamba Bulili was classified as resistant with the lowest DI value of 3.8. In contrast, the cultivars Kas (DI 7.4) and PM (DI 7.0) were categorized as susceptible. The remaining seven cultivars exhibited a rather resistant response.
A Study on Mapping the Potential of Rice Production in Banggai Regency Rumangkang, Olivia Esther Caroline; Effendy, Effendy; Antara, Made; Rauf, Rustam Abd.; Christoporus, Christoporus
AGROLAND The Agricultural Sciences Journal (e-Journal) Vol 12 No 2 (2025): December
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/agroland.v12i2.2715

Abstract

The background of this research is the need to improve regional food security amidst conditions where land degradation, land use changes, and reduced labor can disrupt the proper exploitation of agricultural resources. This study aims to analyze the potential of rice as a food crop in Banggai Regency, Central Sulawesi, which is focusing on the harvested area, production, productivity, and production base by sub-district. Research data were collected from the Central Statistics Agency (BPS, 2024) and the Food Crops, Horticulture, and Plantation Service of Banggai Regency. The analytical approach uses descriptive statistics to describe the harvested area, production, and productivity of rice, and the Location Quotient (LQ) to determine the main production base. The results of this study indicate that West Toili District has the largest harvested area (12,035 hectares), followed by Toili (11,605 hectares) and Moilong (5,038 hectares). Toili is the largest rice-producing district (67,309 tons) with an average productivity of 5.80 tons/ha. Toili, West Toili, Moilong, and Masama are the main rice production bases with LQ values ​​> 1.00, with other sub-districts contributing to lower distribution. Less productive sub-districts need to improve cultivation technology and irrigation networks, thereby providing production facilities. Mapping can be used as a strategic reference for local governments in developing agricultural policies to achieve sustainable food security.
The Effect of Nutrition Supply Duration and KNO3 Concentration on Melon Growth and Yield Susna, Susna; Mahfudz, Mahfudz; Rauf, Abdul
AGROLAND The Agricultural Sciences Journal (e-Journal) Vol 12 No 2 (2025): December
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/agroland.v12i2.2789

Abstract

This study aimed to evaluate the effect of the interaction between the duration of AB-Mix nutrient solution application and the concentration of Potassium Nitrate (KNO3) on the growth and yield of melon plants. The decrease in the sweetness of melon fruit is often associated with the use of low potassium NPK fertilizers. KNO3 is known to play an important role in improving fruit quality, especially sweetness. This study used a split-plot design with four levels of nutrient application duration (D1, D2, D3, D4) as the main plot and three levels of KNO3 concentration (K0=control, K1=850 ppm, K2=1000 ppm) as subplots, replicated four times to produce 48 experimental units. The results showed that the treatment of nutrient solution application interval (D) significantly affected plant height at 2 and 3 WAP and the number of leaves at 2, 3, 4, and 7 WAP, and the number of female flowers. The application of KNO3 (K) fertilizer significantly affected plant height at 2, 3, and 5 WAP, as well as the level of fruit sweetness (Brix). The interaction between the two treatments showed no significant effect on growth parameters and yield. Treatment D4 (the longest watering duration) resulted in a significant increase in plant height, while D3 produced the highest number of leaves and female flowers. A concentration of 1000 ppm KNO3 (K2) alone increased fruit sweetness.

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