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Cassowary
Published by Universitas Papua
ISSN : 26148900     EISSN : 26226545     DOI : 10.30862
Core Subject : Agriculture, Social,
Agriculture, Biological Sciences & Forestry Environmental Science
Cassowary is a Scientific Journal of Management of Natural Resources and Environment, aims to disseminate research findings on environmental and natural resource management. The writings can be published in this journal can be shaped dissertations, theses, research reports, scientific papers and book reviews. Published every 2 (two) times a year, every April, and Augustus.
Arjuna Subject : Ilmu Lingkungan (semua ketegori) - Ilmu Lingkungan (Lain-Lain)
Articles 156 Documents
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Keragaman dan daya hasil lima aksesi ubi kayu lokal (Manihot esculenta Crantz) asal Kampung Yammua Arso 6, Distrik Arso Barat, Kabupaten Keerom, Papua Wibawati, Zarima; A. Merahabia, Paskalius; Lenda Mawikere, Nouke; Prabawardani, Saraswati; Litaay, Gabriela Welma
Cassowary Vol 8 No 4 (2025): Oktober
Publisher : Program Pascasarjana Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30862/casssowary.cs.v8.i4.488

Abstract

ABSTRACT: This study aims to identify and analyze the diversity and yield potential of several local cassava accessions originating from Yammua Village, Arso 6. The research was conducted in Yammua Village, Arso 6, West Arso District, Keerom Regency, Papua Province, from July 2023 to March 2024. Evaluation of cassava germplasm was carried out using a Randomized Block Design (RBD) with five cassava accessions and three replications, resulting in a total of 15 experimental units. Observations were made on three samples from each experimental unit based on the description by Fukuda (2010). Agronomic variables observed included plant height, stem diameter, tuber diameter, tuber length, number of tubers per plant, tuber weight per plant, number of commercial tubers, commercial tuber weight, number of tubers per ridge, tuber weight per ridge, and harvest index. Data analysis included Analysis of Variance (ANOVA), Principal Component Analysis (PCA), Cluster Analysis, and Correlation Coefficient analysis. The results showed significant differences among the five evaluated accessions in terms of plant height, tuber diameter, number of tubers per plant, tuber weight per plant, number of commercial tubers, commercial tuber weight, number of tubers per plot, tuber weight per plot, and harvest index. The similarity coefficient among accessions ranged from 0.07 to 0.33. Two principal components successfully explained 89.7% of the total variation. A significant positive correlation was found between harvest index, tuber diameter, tuber weight per plant, number of commercial tubers, and commercial tuber weight with yield.
Eksplorasi dan deskripsi keanekaragaman morfologi aksesi ubi jalar (Ipomoea batatas L.) di Distrik Nabire dan Nabire Barat Kabupaten Nabire Yanti Wasti, Tris; Mawikere, Nouke Lenda; Prabawardani, Saraswati; Abbas, Barahima; Wibawati, Zarima; Dare, Darius; Moeljono, Soetjipto
Cassowary Vol 8 No 4 (2025): Oktober
Publisher : Program Pascasarjana Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30862/casssowary.cs.v8.i4.490

Abstract

The purpose of this study was to explore and describe the morphological diversity of sweet potato accessions in Nabire and West Nabire Districts, Nabire Regency. The study was conducted in several villages in Nabire and West Nabire Districts, with altitudes ranging from 3 to 10 m above sea level. The study lasted for 2 months, from December 2024 to January 2025. The study was conducted using a descriptive method with direct observation techniques in the field. The determination of the research location was intentional (purposive sampling), by selecting areas where farmers cultivate sweet potatoes. Observations of plant morphological characters were carried out by the description guide by Huaman (1997). Observations on sweet potato accessions included morphological characters of stems or tendrils, leaves, and tubers. The results of the observations were analyzed, tabulated, and presented in tables and figures. The results of exploration in Nabire District (Sanoba, Kalimangga, Kalibobo, Wonorejo Village) and West Nabire District (Bumiraya, BR-Menou, Kalimerah, Gerbangsadu Village) obtained 70 sweet potato accessions. The number of sweet potato accessions cultivated in Nabire District is more (37 accessions) compared to West Nabire District (33 accessions). From the results of the study, a description of the morphology of the stems, leaves, and tubers of sweet potato plants in Nabire and West Nabire Districts was obtained with a fairly high level of diversity, such as: Stem (tendrils) character from non-twisting to twining, upright type to very creeping type, dominant tendril color from green to dark purple, and from hairless to thickly hairy. Leaf characteristics range from heart-shaped to almost separate, serrated leaf curve type to deep (finger-like), the number of leaf curves varies from 1,3,5,7,9, and the color of the leaves ranges from greenish yellow to purple on both the upper and lower leaves. The tuber characteristics range from round to irregular/curved length, and the dominant color of the tuber skin ranges from white to dark purple.
Pengaruh dosis bokashi pupuk Kambing terhadap tingkat serangan hama pada tanaman kacang hijau (Vigna radiata L.) Nurlailah; Parari, Trisday Yiin; Wibawati, Zarima
Cassowary Vol 8 No 4 (2025): Oktober
Publisher : Program Pascasarjana Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30862/casssowary.cs.v8.i4.492

Abstract

One of the limiting factors in mung bean cultivation is the presence of pest attacks that can attack. Chemical pest control is dangerous for the environment and vegetation so it needs biological control. Based on the results of research, potassium nutrient content is able to maintain plant resistance to pest and disease attacks. The purpose of this study was to test the level of pest attacks on mung bean plants given various doses of goat waste bokashi. The research method used a single factor randomized block design with six treatment levels L0 = No bokashi treatment (Control), L1 = Treatment dose 2.4 kg (6 tons/ha), L2 = Treatment dose 4.8 kg (12 tons/ha), L3 = Treatment dose 7.2 kg (18 tons/ha), L4 = Treatment dose 9.6 kg (24 tons/ha), L5 = Treatment 12 kg (30 tons/ha). Observation variables were the number of perforated leaves, the number of torn leaves, the number of flowers, the number of flowers that successfully formed pods, the number of infected pods and productivity. Observation data were analyzed using analysis of variance (ANOVA) and further test LSD 0.05. The research results showed that 7.2 kg (18 tons/ha) of goat waste bokashi was the optimal dosage for increasing plant resistance to pest attacks and achieving optimal yield. The number of flowers formed and the number of flowers that successfully formed pods were positively correlated with increased yield. Keywords: Goat Waste Bokashi, Pests, Mung Beans
Analisis permintaan telur ayam ras di Kabupaten Manokwari Suawa, Elfira; Sitanggang, Fransiska Rianti Verawati; Widayati, Trisiwi W.; Manik, Hotlan
Cassowary Vol 8 No 4 (2025): Oktober
Publisher : Program Pascasarjana Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30862/casssowary.cs.v8.i4.493

Abstract

Demand analysis is essential for providing information that serves as a reference in formulating government policies for managing livestock products. This study aimed to analyze the factors influencing the demand for chicken eggs in Manokwari Regency. Secondary data covering the period 2013–2022 were obtained from the Manokwari Class II Agricultural Quarantine Station and several agencies in West Papua Province, including the Central Bureau of Statistics (BPS), the Department of Industry and Trade, the Department of Fisheries and Marine Affairs, and the Department of Animal Husbandry and Animal Health. The data were analyzed using linear regression with the Ordinary Least Squares (OLS) method. The results showed that the demand for chicken eggs in Manokwari Regency was influenced by the price of chicken eggs, the price of free-range chicken eggs, the price of duck eggs, the price of beef, the price of rice, the price of tempeh, and the population size.
Optimasi flotasi bijih nikel laterit menggunakan depresan pati singkong karet (Manihot glaziovii) dengan variasi konsentrasi pati dan pH terhadap recovery nikel Rantang, Cornelia Kesia; Almi Lestari, Mirna; Yoretno Y, Putri; Caludia Rony, Putri; Imanuel Tikupadang, Ruberto; Sira Sarungallo, Rosalia
Cassowary Vol 8 No 4 (2025): Oktober
Publisher : Program Pascasarjana Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30862/casssowary.cs.v8.i4.503

Abstract

ABSTRACT: This research aims to characterize the chemical composition of laterite nickel ore and analyze the effect of variations in the mass of cassava rubber starch depressant (Manihot glaziovii) and the pH of the flotation solution on nickel recovery and the content of gangue minerals (Fe2O3 and SiO2) in the flotation process. The laterite nickel ore used was obtained from Southeast Sulawesi. The research was conducted experimentally in the laboratory with pH variations of 5, 7, and 9 and starch depressant masses of 0, 0.1, 0.3, and 0.5 g. The collector used was sodium oleate, and pine oil was used as a frother. The results showed that the laterite nickel ore used as raw material has typical characteristics of laterite ore with a low Ni content and high gangue content. Variations in the mass of cassava rubber starch depressant and pH affected nickel recovery and the selectivity of separation toward gangue minerals. Under acidic conditions (pH 5), increasing the starch mass up to 0.3 g decreased nickel recovery from 58.26% to 36.75%. At neutral pH (pH 7), a recovery of 69.62% was obtained, while at basic pH (pH 9) and a starch mass of 0.5 g, the highest nickel recovery of 76.61% was achieved. However, the use of cassava rubber starch has not yet shown optimal selectivity in reducing Fe2O3 and SiO2 contents. Research using cassava rubber starch has potential as a natural, economical, and environmentally friendly depressant to improve nickel recovery in the flotation process of laterite nickel ore, although further optimization is still needed to improve selectivity toward gangue minerals.
Analisis perilaku konsumen: frekuensi pembelian dan preferensi ter-hadap jenis sembako di Ayamaru Raya, Kabupaten Maybrat isir, Yunike; Sagrim, Meky; Theresia Wambrauw, Ludia
Cassowary Vol 8 No 4 (2025): Oktober
Publisher : Program Pascasarjana Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30862/casssowary.cs.v8.i4.504

Abstract

ABSTRACT: This study aims to analyze consumer behavior in purchasing nine essential food commodities (sembako) in Ayamaru Raya, Maybrat Regency, West Papua Province. A descriptive quantitative approach was used involving 30 consumer respondents. The results revealed that most consumers were aged 26–55 years, dominated by females, and primarily consisted of housewives and unemployed individuals. Most consumers purchase sembako three to five times per month, focusing on main commodities such as rice, sugar, cooking oil, eggs, and salt. Brand preferences indicate a tendency toward locally accessible and trusted products such as Merapi and Semangka rice, local sugar, Bimoli cooking oil, Segitiga Biru flour, and Cap Kapal salt. Price, quality, and accessibility are the main factors influencing purchasing decisions. Although prices are relatively high and often fluctuate, purchasing access remains easy as physical stores are located near residential areas. The study recommends strengthening price stability, improving local distribution networks, and empowering traders and consumers to enhance sustainable food security in Ayamaru Raya, Maybrat Regency.

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