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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Jurnal Hortikultura JURNAL PERTANIAN PRESISI (JOURNAL OF PRECISION AGRICULTURE) JURNAL PERTANIAN QARDHUL HASAN: MEDIA PENGABDIAN KEPADA MASYARAKAT JURNAL AGRONIDA Asian Journal of Agriculture
Rahayu, Arifah
Universitas Djuanda
Agriculture, Biological Sciences & Forestry Economics, Econometrics & Finance Education Languange, Linguistic, Communication & Media Social Sciences Veterinary Other

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Karakter Morfologi dan Kimia Kultivar Pamelo (Citrus maxima (Burm.) Merr.) Berbiji dan Tanpa Biji Arifah Rahayu
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 40 No. 1 (2012): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (339.041 KB) | DOI: 10.24831/jai.v40i1.14943

Abstract

The objective of this study was to evaluate morphological and chemical characteristics of seeded and seedless pummelofruit. The study was carried out during April 2009 to July 2010. The pummelo fruits were harvested from the productioncenter of Sumedang, Pati, Kudus, Magetan, Bireun (Aceh) and Pangkep (South Sulawesi). Some of seeded cultivars havespherical and ellipsoid form, while the seedless one shown pyriform shape. The edible portion of the fruits (juice vesicles)mainly affected by peel thickness and fruit shape. The edible portion of seedless cultivars (57.22%) were not sigificantlydifferent with seeded (57.07%) and potentially seedless cultivars (59.35%). Generally fruit taste of seedless cultivars weresweet to sweet-bitter, meanwhile seeded and potentially seedless pummelo cultivars have sour-sweet. Pummelo juice tastewas affected by TSS (total soluble solids), TA (titratable acidity), TSS/TA ratio and naringin content. Seedless pummelocultivars have higher pH, TSS, TSS/TA ratio, vitamin C and naringin, but lower in TA content than seeded and potentiallyseedless fruit juice. ‘Jawa 1’ and ‘Bali Merah 2’ pummelos can be further developed as seedless superior cultivars.Keywords: fruit shape, edible portion, TSS/TA, naringin, vitamin C
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

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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 Affandy Sahala Tua Marpaung Dewi, Iswari Saraswati Dona Ramdani Sidiq Ghani Hendrika Hera Herawati Ilham Fahrizal Indah Ayu Lestari Intan Apriani Sutandi Lukman Fahmi M Ginanjar Mutiara Yaumalika Nani Yulianti Nur Rochman Nur Rochman OL Tobing Purwoko, Bambang Sapto Revianto Revianto Rizki Yora Ardiansyah Rizky Yora Setyono Sjarif Avitidjadi Adimihardja Slamet Susanto Sumarni Ulfa Khaerunnisa Wiellda Novia Sania Wini Nahraeni Yanyan Mulyaningsih Yuliawati Yusuf Bachtiar