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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
Ketty Suketi
Departemen Agronomi dan Hortikultura, Fakultas Pertanian, Institut Pertanian Bogor (IPB University), Jl. Meranti, Kampus IPB Darmaga, Bogor 16680, Indonesia
Agriculture, Biological Sciences & Forestry Economics, Econometrics & Finance

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Pemanfaatan Khamir Antagonis untuk Memperpanjang Umur Simpan dan Mengendalikan Penyakit Antraknosa Buah Pepaya Mutiara Dwi Lestari; Ketty Suketi; Winarso Drajad Widodo; Suryo Wiyono
Indonesian Journal of Agronomy Vol. 48 No. 3 (2020): 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 (356.533 KB) | DOI: 10.24831/jai.v48i3.32167

Abstract

Papaya is one of the climacteric fruits that has a short shelf life and potential for postharvest anthracnose disease disorders caused by the pathogen Colletotrichum gloeosporioides. The purpose of this study was to investigate the effectiveness of several antagonistic yeast species to extend shelf life and controlling anthracnose disease in postharvest of Callina papaya. This research was conducted at the Papaya field in Kanaga Village, Lebak Regency, Banten from November 2018 to July 2019, and Postharvest Laboratory AGH, IPB University from March to July 2019. The experiment was arranged in a randomized complete block design with the treatment of five types of yeasts, i.e., Cryptococcus albidus Yp, Aureobasidium pullulans Dmg 30 DEP, Rhodotorula minuta Dmg 16 BEP, Candida tropicalis Lm 13 BE, and Pseudozyma hubeiensis Dmg 18 BEP, a fungicide treatment with active ingredient azoxystrobin as a standard, and without treatment as a control. The results showed that the use of Candida tropicalis, Aureobasidium pullulans, and Cryptococcus albidus extended the shelf life of Callina papaya fruit to 12.6, 12.4, dan 12.2 days, respectively, longer than the control that was only 7 days, and effectively prevented anthracnose disease with suppression rates of 58.33%, 54.17%, and 50.00%, respectively, during storage. The use of yeast antagonists did not affect the physical and chemical quality of Callina papaya. Keywords: climacteric fruit, Colletotrichum gloeosporioides, postharvest
Studi Degreening, Kesegaran, dan Daya Simpan Buah Naga Merah (Hylocereus polyrhizus (Weber) Britton & Rose) untuk Menentukan Kriteria Panen Optimum Winarso Drajad Widodo; Ketty Suketi; Farah Maulida
Indonesian Journal of Agronomy Vol. 48 No. 3 (2020): 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 (528.099 KB) | DOI: 10.24831/jai.v48i3.33065

Abstract

Red dragon fruit is a non-climacteric fruit with a photosynthetic crassulacean acid metabolism pathway. The optimum maturity is characterized by a 100% red skin color. The aim of the experiment was to study the changes in color, freshness, and shelf life of red dragon fruit to determine the optimum harvest criteria. The fruits were harvested from Sabisa Farm, Sindang Barang, Bogor (60 35 ‘16“ S, 1,060 46” E; elevation 219 m above sea level). The experiment used a complete randomized block design with 5 levels of harvesting age, namely 30, 32, 34, 36, and 38 days after anthesis (DAA) with 5 replications. The results showed that the skin of 30 DAA fruit has a color scale of 2 (1-25% red) and 32 DAA fruit has a color scale of 4 (26-50% red). Fruit 34, 36, and 38 DAA had reached a color scale of 6 (100% red) when harvested. The skin of 30 DAA fruit takes 6 days after harvest (DAH) and 32 DAA fruit takes 3 DAH to reach a color scale of 6 (100% red). On the 6 color scale, the fruits of 30 to 38 DAA had a total soluble solids content of 11.7 to 13.5 oBrix which still meets the dragon fruit marketing standard of 11.0 oBrix. The total titrated acid content decreased, but the vitamin C content increased with increasing harvest age. Keywords: CAM, fruit freshness, heat unit, long-day plant, postharvest ripeness
Co-Authors Farah Maulida Mutiara Dwi Lestari Suryo Wiyono Winarso D. Widodo