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All Journal JURNAL AGRONIDA Asian Journal of Agriculture
Wini Nahraeni
Universitas Djuanda
Agriculture, Biological Sciences & Forestry

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DISTRIBUTION OF PUMMELO {Citrus maxima (Burm.) Merr.} ACCESSIONS IN MAGETAN REGENCY Rizky Yora; Arifah Rahayu; Wini Nahraeni; Nur Rochman
JURNAL AGRONIDA Vol. 3 No. 1 (2017)
Publisher : Universitas Djuanda Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1549.085 KB) | DOI: 10.30997/jag.v3i1.1016

Abstract

Pummelo plants in Magetan Regency were found to spread over several villages and their accessions have their own morphological and chemical characteristics.  This study was aimed at assessing the distribution and the number of pummelo accessions in Magetan Regency.  The study was conducted in Magetan Regency East Java from May to July 2015.  Observation was conducted on distribution marking and accession characteristics by using a survey method.  Results showed that the accessions of pummelo plants grown by farmers in Tambak Mas Village were varied but they were not evenly distributed.  Meanwhile, pummelo plants grown by farmers in Dukuh Village had uniform accessions with uneven distribution.  Results of  field observation obtained 13 pummelo accesions, namely Adas Duku, Adas Nambangan, Bali Putih, Bali Merah 1, Bali Merah 2, Gulung 1, Gulung 2, Gulung 3, Magetan, Jawa 1, Jawa 2, Jawa 3, dan Sri Nyonya.  The most commonly pummelo accessions found in Tambak Mas Village were Adas Nambangan and Adas Duku.  Meanwhile the most accessions planted in Bendo Village were Adas Duku and Sri Nyonya. Key words: pummelo, Adas Nambangan, Tambak Mas, Dukuh, survey method
MORPHOLOGICAL AND CHEMICAL CHARACTERISTICS OF VARIOUS PUMMELO (Citrus maxima (Burm.) Merr.) ACCESSIONS FROM MAGETAN REGENCY Arifah Rahayu; Wini Nahraeni; Nur Rochman; Rizki Yora Ardiansyah
JURNAL AGRONIDA Vol. 3 No. 2 (2017)
Publisher : Universitas Djuanda Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (721.785 KB) | DOI: 10.30997/jag.v3i2.1043

Abstract

Magetan Regency was the production centre of pummelo that have many accessions  with various morphological and chemical characteristics, but only a few of them were identificated. This study was aimed at identifying morphological and chemical characteristics of pummelo fruits in Magetan Regency.  The study was conducted in the Biology Laboratory of Djuanda University, Bogor from May to July 2015.  Results showed with regard to their morphological characteristic, pomelo plants in this region were found to have spheroid and spheroid-pyriform fruits and the weight of their fruit parts, fruit core width, mesocarp thickness, fruit circle before peeling, fruit circle after peeling, number of fruit segments, number of developed seeds, and edible parts of the fruit were varied.  Chemical characteristics were also found to be varied with vitamin C content of 29.80−44.66 mg/100g, total soluble solids (TSS) content of 8.10−9.72°Brix, total titratable acidity (TAA) of 0.31−0.53 g/100 ml, and TSS/ TAA ratio of 17.69−28.58. Key words: production centre of pummelo, spheroid, vitamin C, TSS
Effects of fermented cow urine on the growth and quality of katuk (Sauropus androgynus) accessions from West Java, Indonesia ARIFAH RAHAYU; NUR ROCHMAN; WINI NAHRAENI; YULIAWATI YULIAWATI
Asian Journal of Agriculture Vol. 9 No. 2 (2025)
Publisher : Smujo International

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/asianjagric/g090249

Abstract

Abstract. Rahayu A, Rochman N, Nahraeni W, Yuliawati. 2025. Effects of fermented cow urine on the growth and quality of katuk (Sauropus androgynus) accessions from West Java, Indonesia. Asian J Agric 9: 831-843. This study examined the growth, yield, and nutritional quality of katuk using local germplasm and natural nitrogen sources. The objective was to evaluate the performance of ten katuk accessions from West Java, Indonesia, and to assess the potential of fermented cow urine as a supplementary nitrogen source relative to urea. A factorial completely randomized design with three replications was employed, consisting of ten accessions (Sarampad, Maleber1, Maleber2, Kadudampit1, Kadudampit2, Gegerbitung, Dramaga, Cinangneng1, Cinangneng2, and Katulampa) and six fertilizer compositions (0% cow urine + 100% Urea; 100% cow urine + 0% Urea; 75% cow urine + 25% Urea; 50% cow urine + 50% Urea; 25% cow urine +75% Urea; 0% cow urine + 0% Urea). Sarampad, Maleber1, and Maleber2 exhibited superior fresh and dry harvest weight, vitamin C, chlorophyll a and b content, while maintaining low nitrate accumulation. Plant height under 100% cow urine, shoot number and vitamin C under 25% cow urine + 75% urea, and chlorophyll a, b, and total chlorophyll under 50% cow urine + 50% Urea were higher than under 100% Urea, with superiority values of 14.7%, 19.0%, 20.2%, 14.6%, 18.2%, and 15.9%, respectively. These findings indicate that fermented cow urine may serve as a low-cost supplementary nitrogen source for katuk; however, its use as a full replacement for synthetic nitrogen fertilizer requires further validation under field conditions.
Co-Authors Nur Rochman Rahayu, Arifah Rizki Yora Ardiansyah Rizky Yora Yuliawati