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Journal : Journal of Tropical Crop Science

Improvement of Shelf Life and Sensory Quality of Pummelos by Fruit Waxing and Wrapping Aji, Titistyas Gusti; Susanto, Slamet; Sukma, Dewi; Ardie, Sintho Wahyuning
Journal of Tropical Crop Science Vol 4 No 1 (2017): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (197.349 KB) | DOI: 10.29244/jtcs.4.1.13-20

Abstract

The aims of this study were to evaluate the physical and chemical change of pummelo fruit during storage with waxing and wrapping, and to determine the effect of waxing and wrapping and their  its interaction in affecting shelf life of pummelo fruits. This research was arranged in a randomized complete block design with two factors and three replications. The first factor was waxing consisted of without waxing, 10% beeswax, 5% beeswax, and chitosan. The second factor was wrapping consisted of without wrapping and wrapping using either transparent yellow or white plastic wrap. Pummelo fruits experience weight loss, reduced total soluble solid (TSS), decrease in firmness and total acidity during 48 days of storage in room temperature. Waxing using beeswax or wrapping using plastic wraps significantly suppressed weight loss and maintained fruit firmness compared to those without waxing and wrapping. However, waxing and wrapping did not significantly affect the quality of pummelo fruits. Based on the fruit’s weight loss, firmness, and panelist preferences, 5% or 10% bees wax can be used as waxing. Both transparent yellow and white plastic wraps can be used to maintain fruit weight, firmness, and appearances during storage. 
Sources and Rates of Potassium for Drip Irrigation of Polyethylene-mulched Bean Production Hulu, Versi Putra Jaya; Purnamawati, Heni; Susila, Anas Dinurrohman; Susanto, Slamet
Journal of Tropical Crop Science Vol 6 No 03 (2019): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (259.94 KB) | DOI: 10.29244/jtcs.6.03.182-192

Abstract

Common bean is a type of vegetable that can be consumed in the form of young pods. Potassium is one of the macronutrients needed to achieve maximum yield in common bean. Therefore this research is aimed at determining a suitable potassium source as well as an appropriate rate for drip irrigation in common bean using polyethylene mulch. The study was conducted from January to May 2018 at University Farm, IPB University. This experiment was set up as a nested randomized block design with two factors i.e. potassium sources as the main factor ( KCl, ZK, and NPK), and potassium rates (0, 37.5, 75, 112.5, 150 kg of K2O per ha). Fertilizer rates were nested in the main factor and fertilizers were applied Fertilization through a drip irrigation fertigation system with emitters placed close to the roots of plants. Fertilizer sources had significant effects on the variables of growth and bean yields. NPK resulted in a better growth and yield compared with KCl and ZK. Fertilizer sources that have very significant effect were likely related to the shape and solubility of the fertilizers, the ease of application, and also completeness of nutrient content in fertilizer. Based on the pod weight per plot, the productivity per hectare of bean pods produced in this study reached 7.52 ton.ha-1. Potassium (K2O) rate did not have significant effects on the variables of growth and yields of the bean.
Fruit Scar Incidence and Its Effect on Guava ‘Kristal’ Fruit Quality (Psidium guajava L.) at Low- and Middle-altitude Orchards in Bogor, Indonesia Neni Musyarofah; Slamet Susanto; Sandra Arifin Aziz; Ketty Suketi; Dadang Dadang
Journal of Tropical Crop Science Vol. 8 No. 02 (2021): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.8.02.101-109

Abstract

Information on scar incidence and its effect on fruit quality of ‘Kristal’ guava (Psidium guajava L.) grown on different altitudes is currently limited. The aim of this study was to evaluate the fruit scar incidence and fruit quality of 'Kristal' guava var. grown on low- and middle-altitude orchards. The research was conducted by collecting 50 samples of fruit harvested from each orchard from January to June 2019. Fruit quality evaluation was carried out at Postharvest Laboratory, Department of the Agronomy and Horticulture, IPB University, whereas scarring pest observation was conducted at Insect Biosystematics Laboratory, Department of Plant Protection, IPB University. Our results showed that the low-altitude orchard produced more fruits with medium, high, and very high scar intensity, while the middle-altitude orchard produced more fruits with low and very low scar intensity. Fruit scar was caused by fruit scarring pests, especially thrips and mites. Fruit tissue damage only occurred on the epidermis of fruit pericarps where the tissue turned brownish and thickened. Additionally, there was no expansion of the damage into the pulp. The peel damage did not affect the fruit taste as indicated in the level of total soluble solids (TSS), titratable acidity (TA), TSS/TA ratio, vitamin C, and total flavonoids content. Fruit external quality was varied in response to altitude, where middle-altitude orchard produced a heavier, a bigger and a lower fruit softness than low-altitude ones. Present findings could be the baseline information for determine the best growth site and adjustment of pest control to maintain fruit quality.
Leaf and Flower Characterization of Abiu (Pouteria caimito Radlk.) at Two Locations in Bogor Region, West Java, Indonesia. Muhamad Ramdan; Slamet Susanto; Deden Derajat Matra; Dhika Prita Hapsari
Journal of Tropical Crop Science Vol. 10 No. 01 (2023): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.10.1.1-7

Abstract

Abiu is a species introduced into Indonesia from the tropics of the Amazon and has been developing for several years. Information on the characteristics of the abiu plant are still limited compared to other introduced fruit species. This research aims to identify the characteristics of the abiu plants in two locations in the Bogor region, West Java, Indonesia. The research was conducted at Balumbang Jaya village, the sub-district of Dramaga, the village of Mekarsari, the sub district of Cileungsi, Bogor, West Java. Further observation was conducted at Post-harvest Laboratory and Micro Technic Laboratory, Department of Agronomy and Horticulture IPB. The field study was conducted in January to July of 2018. This research was descriptive and no treatment was applied on the plant samples. Sampling was done randomly with as many as 15 plants at each location. Observations and measurements were conducted on the number of branches, leaves and flowers on 10 samples per plants. The results showed that there is morphological diversity of flowers and leaves at the two locations. The length, width, and weight of leaves and flowers in Balumbang Jaya were larger than those in Mekarsari. Different environments may contribute to the diversity of abiu leaves and flowers in the two locations.
Effects of Pruning, Branch Bending, and Biofertilizer Application on Flowering and Fruiting of Guava “Crystal” Natalia, Cristina Evi; Susanto, Slamet; Suketi, Ketty; Hapsari, Dhika Prita
Journal of Tropical Crop Science Vol. 12 No. 01 (2025): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.12.01.185-194

Abstract

Guava “Crystal” is one of Indonesia’s most popular varieties; its demand continues to increase, so it is important to examine methods to increase fruit production. This research aims to increase the flowering and fruiting of guava “Crystal” through branch-bending and application of biofertilizer. The results showed that pruning + bending significantly increased the number of shoots by 15.8%, shoot length by 11.16%, and leaf number by 15.09%. This treatment also increased flower number by 88.84%, fruit number by 77.9%, and double the fruit weight. Biofertilizers significantly increased vegetative growth in the form of the number of shoots (5.12%), shoot length (9.21%), and number of leaves (10.29%). Pruning + bending and biofertilizer did not significantly affect weight per fruit, fruit diameter, fruit volume, fruit firmness, total soluble solids, total titratable acids, and vitamin C content.
Co-Authors , Hariyadi , Hariyadi3 , Hasnam , Mukhlas , Sakhidin , Setyono . Santosa . Saputera . Strisno . Sutrisno A. S. Abidin Abdullah Bin Arif Abdullah Bin Arif Agus Purwito Ahmad Junaedi AHMAD JUNAEDI Ahmad S. Abidin Aji, Titistyas Gusti Ali Husni Ali Husni Ali Husni Ali Husni Amin Rejo Anas Dinurrohman Susila Ani Kurniawati Antik Siti Latifah Arifah Rahayu Asniwita Asniwita Atika Romalasari Bambang B. Santoso Bambang Budi Santoso Bambang Pramudya Bambang Pramudya Bambang S . Purwoko Bambang S. Purwoko Bambang Sapta Purwoko Bhayu Hartanti Dadang Dadang Dadang Hermansyah Dadang Hermansyah Deden Derajat Matra Delys Inkorisa Dewi Sukma Dewi, Iswari Saraswati Dhika Prita Hapsari DJUMALI DJUMALI DJUMALI DJUMALI, DJUMALI Dona Rustani DWI ANDREAS SANTOSA Dyah Retno Wulandari Dyah Retno Wulandari Edi Minaji Pribadi Edi Santosa Efendi, Darda Endro Priherdityo Erniawati Diningsih Erniawati Diningsih Erniawati Diningsih Evan Yonda Pratama Faqih Udin Fidya Novita Fiki, Ainun Gede Suastika Gede Suastika Gede Suastika GEDE SUASTIKA Giyanto, Giyanto Habibi, Irfan Hadi K. Purwadaria Handian Purwawangsa Hariyadi Hariyadi Harliani Sri Utami Henny Nurpa Anggriani Herik Sugeru Hermansyah, Dadang Hilda Susanti Hulu, Versi Putra Jaya I Wayan Budiastra Indriati Husain Iswari S Dewi Iswari S. Dewi Iswari Saraswati Dewi Jamhari Jamhari Karmanah, Karmanah Kartika Ning Tyas Kartika Ning Tyas Kartika Ning Tyas Ketty Suketi Kikin H Mutaqin Kosmaryadi, Nandi Kristriandiny, Oktiadewi Kudang B Seminar Kudang B. Seminar Leo Mualim M. Wahyudin Nasrulloh, M. Wahyudin Nasrulloh Matra, Deden Derajat Maya Dewi Sulistyningrum Maya Melati Moeljarno Djojomartono Moeljarno Djojomartono Moh Nailun Ni'am MOHAMMAD CHOLID MOHAMMAD CHOLID, MOHAMMAD Muhamad Ramdan Muhammad Syukur Muhammad Thamrin Nafi’ Kurniawan Natalia, Cristina Evi Neni Musyarofah Neni Musyarofah Nurul Khumaida Nurul Khumaida Oktiadewi Kristriandiny Parameswara, Yosephine Sista Pratama, Evan Yonda Priherdityo, Endro Purwoko, Bambang Sapto R. Poerwanto Raden Ajeng Diana Widyastuti Rahayu, Arifah Renaldy Susanto Resti Putri Septyani Resti Putri Septyani Retty Nurfazizah Roedhy Poerwanto Roedy Poerwanto Rustam, Rustam Rustani, Dona Sakhidin Sakhidin Salsabila, Unik Hanifah Sandra A. Aziz Sandra Arifin Azis Sandra Arifin Aziz Santosa Santosa Sintho Wahyuning Ardie Siregar, Shella Elvira Siti Aisyah Rohmatus Sa’adah Siti Mariana Widayanti SRI HENDRASTUTI HIDAYAT Sri Minten Sriani Sujiprihati Sudirman Yahya Sukma, Dewi Suroso Suroso Suryo Wiyono Sutrisno Sutrisno Sutrisno Sutrisno Suyanto Kartosoewarno Thamara, Aria Titistyas Gusti Aji TRI ASMIRA DAMAYANTI Tri Muji Ermayanti Tri Muji Ermayanti Tri Muji Ermayanti Ummu Kalsum Wahyu Fikrinda Widyaswara, Muhammad Heraldi Garda Willy Bayuardi Suwarno Winarso D. Widodo Wulandari, Dyah Retno Yosephine Sista Parameswara Yudi Chadirin Yul Y Nazaruddin