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Journal : Journal of Tropical Crop Science

A Review of Root Pruning to Regulate Citrus Growth Budiarto, Rahmat; Poerwanto, Roedhy; Santosa, Edi; Efendi, Darda
Journal of Tropical Crop Science Vol 6 No 01 (2019): Journal of Tropical Crop Science
Publisher : Journal of Tropical Crop Science

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Abstract

Root is the important plant organ hiding below the soil that serves as plant supporting structure, water and nutrient supplier and assimilates storage. Root growth occurs in turn with shoot part, forming repeated cyclic pattern because of the photosynthate competition. Root growth regulation is one of the promising practices to boost the yield of fruit tree, especially citrus that is economically important and highly demanded fruit. Root pruning varied based on the scale of intensity and plant growth stage, including air root pruning, knife root pruning and modern pruning using root pruner machine mounted to a tractor. Root pruning to induce the growth of more fi brous root system and to correct root deformation at seedling stage have potentials to improve post-transplant growth. Besides, it has a potential to replace the use of chemical plant growth regulator for a more environmentally friendly practice. The pruning of root impeded the canopy growth, altered the plant water status leading to fl ower promotion. In addition, it is also a promising practice to overcome the alternate bearing on fruit tree, including citrus, through the suppressing of excessive growth and restricting the high fruit load during the ‘on year’ and allowing a better carbohydrate storage for the improvement of yield during the ‘off year’.
The Potentials of Limau (Citrus amblycarpa Hassk. Ochse) as A Functional Food and Ornamental Mini Tree Based on Metabolomic and Morphological Approaches Budiarto, Rahmat; Poerwanto, Roedhy; Santosa, Edi; Efendi, Darda
Journal of Tropical Crop Science Vol 4 No 2 (2017): Journal of Tropical Crop Science
Publisher : Journal of Tropical Crop Science

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Abstract

Limau (Citrus amblycarpa (Hassk.) Ochse) is one of the native Citrus species of West Java that is grown in the local backyard, thus is easily found in local cuisines. Limau has great potentials for use as a potted plant in home gardens for its aesthetic value and fragrance. The objective of this research was to describe the metabolites fingerprint and morphology of Limau as a potential functional and ornamental mini tree. Methanol leaf extracts from one-year-old Limau originated from Bogor were analyzed using untargeted Gas Chromatography Mass Spectrometry (GCMS). Methanol leaf extract was dominated by vitamin E and composed of other 18 metabolites including phytosterols, fatty acids and terpenes. The major portion of fruit extract consisted of 6-octadecenoic acid, palmitate and various fragrance compounds such as alpha sinensal, alpha limonene, beta citronellal, citronellol, and sabinene. Limau fruits are also a functional food due to its rich antioxidant and aromatic content in the fruits. The morphology of limau tree is suitable as a potted ornamentals or mini-fruits tree for its small crown, sparse branching with unifoliate aromatic leaves and small spines, and plentiful aromatics mini fruits with the diameter of around 2-4 cm.  
Production, Post-Harvest and Marketing of Kaffir Lime (Citrus hystrix DC) In Tulungagung, Indonesia Budiarto, Rahmat; Poerwanto, Roedhy; Santosa, Edi; Efendi, Darda; Agusta, Andria
Journal of Tropical Crop Science Vol 6 No 02 (2019): Journal of Tropical Crop Science
Publisher : Journal of Tropical Crop Science

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Abstract

Kaffir lime (Citrus hystrix DC) is one of the Citrus species that is popular as food spices in Indonesia. This study was aimed at describing the production system, post-harvest handling, marketing and evaluating the product variation of kaffir lime cultivated in the Tulungagung district, East Java Province, Indonesia. Data was collected through a survey by interviewing kaffir lime farmers, distributors and customers in June 2018. Kaffir lime is cultivated by local farmers using traditional and conventional agriculture practices. The farmer used good quality seedlings as planting materials and applies animal manure or compost to the trees. Kaffir lime is grown on rain-fed land; fertilizers and pesticides are applied sparingly. The kaffir lime leaves could be harvested twice a year in different seasons. Better leaf quality can be obtained during the rainy seasons. The leaf production per tree is estimated at about 100 gram per plant per season. Post-harvest handling involved sorting, packing and marketing without any cooling treatment. The standard gate price of kaffir lime leaf in June 2019 was IDR 6,000-7,000, IDR 9,000-10,000 at the collector level, IDR 11,000-12,000 at wholesaler, and IDR 14,000-16,000 at small retailers. Leaves were distributed to traditional market in Tulungagung, neighbouring districts such as Kediri, Trenggalek and Blitar, and also to capital cities such Jakarta. The main product of kaffir lime is the fresh leaf for food seasoning and as a raw material to produce essential oil and dry leaf powder. The stems have been used for fuel in home industries. The fruits of kaffir lime are rarely found in the market and have great potentials for essential oil production and recently, a promising commodity for export.
Study of Incubation Duration After Degreening and Storage Methods on the Quality of Tangerine "Garut" (Citrus reticulata B.) Tiara, Dede; Poerwanto, Roedhy; Poerwanto, Roedhy; Efendi, Darda
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 (358.35 KB) | DOI: 10.29244/jtcs.6.03.193-200

Abstract

Ripened citrus fruits with an orange rind have a higher market demand relative to unripen citrus with a green rind. This research was aimed to evaluate the combination of post-degreening incubation duration before storage with the type of storage to increase orange rind color and storage life of citrus fruit. A randomized block design with two factors was used; the first factor was post-degreening incubation duration before storage that comprised of without incubation, incubation for two and four days. The second factor was storage method that comprised of storage at room temperature (29 ± 1oC), at 18 ± 1oC, waxing and storage at room temperature, waxing and storage at 18 ± 1oC. The result shows that post-degreening incubation duration that increased orange color of citrus rind was four days. The citrus which was stored at 18 ± 1oC had the smallest fruit weight loss. The best treatment combination which increased orange color formation and had lower percentage of fruit weight loss was a combination of 4 days incubation after degreening and storage at 18± 1oC.
Study of Incubation Duration After Degreening and Storage Methods on the Quality of Tangerine "Garut" (Citrus reticulata B.) Tiara, Dede; Poerwanto, Roedhy; Poerwanto, Roedhy; Efendi, Darda
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 (358.35 KB) | DOI: 10.29244/jtcs.6.03.193-200

Abstract

Ripened citrus fruits with an orange rind have a higher market demand relative to unripen citrus with a green rind. This research was aimed to evaluate the combination of post-degreening incubation duration before storage with the type of storage to increase orange rind color and storage life of citrus fruit. A randomized block design with two factors was used; the first factor was post-degreening incubation duration before storage that comprised of without incubation, incubation for two and four days. The second factor was storage method that comprised of storage at room temperature (29 ± 1oC), at 18 ± 1oC, waxing and storage at room temperature, waxing and storage at 18 ± 1oC. The result shows that post-degreening incubation duration that increased orange color of citrus rind was four days. The citrus which was stored at 18 ± 1oC had the smallest fruit weight loss. The best treatment combination which increased orange color formation and had lower percentage of fruit weight loss was a combination of 4 days incubation after degreening and storage at 18± 1oC.
Co-Authors , Dorly , Lizawati , Sakhidin , Sobir , Sudarsono , Trikoesoemaningtyas , Yudiwanti - Juanasri . DARMAWAN . SUDARSONO . SUHARSONO ABDUL MUNIF Abdul Qadir Achmad Surkati AGUS PURWITO Ahmad Ghozi Manshuri Ahmad Ghozi Mansyuri Ahmad S. Abidin Akmal, Ajmir Ali Nurmansyah Anas D Susila Anas D. Susila Anas Dinurrohman Susila ANDRIA AGUSTA Ansyori, . Asmini Budiani Bambang S . Purwoko Bambang S. Purwoko Bambang Sapta Purwoko Cenra Intan Hartuti Tuharea CICIK SURIANI D Fatria Darda Efendi DEDY DURYADI DEWI SUKMA DIDY SOPANDIE Djoko Santoso DORLY DORLY E Efendi, E Edi Santosa Eko Setiawan Endah Retno Palupi Endang Gunawan Fahrianty, Dian Fauziyah Harahap Fumio Fukuda H., Nian Rimayanti HAJRIAL ASWIDINNOOR Hanifah Muthmainnah, Hanifah Heni Purnamawati Hiroshi Inoue I Hidayati, I I MADE ARTIKA I NYOMAN RAI Iman Rusmana Inanpi Hidayati Sumiasih, Inanpi Hidayati Indah Wulandari Iskandar Lubis Jawal Muhammad Anwarudinsyah JULIARNI JULIARNI Jumawati, Riana Kasutjianingati . Ketty Suketi Kuniyuki Saitoh Kurniadinata, Odit F. Kurniawan, Vandra La Ode Safuan Latifah K. Darusman LATIFAH KOSIM DARUSMAN Lukman Liferdi Maulana, Mohamad Akhbar Maulana, Mohamad Akhbar Memen Surahman Muhammad Arif Nasution Muhammad Darmawan, Muhammad Nadhirah Karimatul Ilmi, Nadhirah Karimatul Naohiro Kubota Nobuo Sugiyama Nono Sutrisno Nur Wahyu Sariningtias, Nur Wahyu Nurfitri Ramadhani, Nurfitri Nurul Khumaida Odit Ferry Kurniadinata, Odit Ferry Rahmat Budiarto Ramdan Hidayat Rd. Selvy Handayani Resa Sri Rahayu, Resa S Susanto SAMANHUDI, . Septirosya, Tiara Slamet Susanto Soaloon Sinaga Sobir Sobir SOEKISMAN TJITROSEMITO Sri Astuti Rais Sri Yuliani SRIANI SUJIPRIHATI Suci Rahayu SUDIRMAN YAHYA SURYO WIYONO Sutrisno sutrisno T Purnama Tanari, Yulinda Taruna Shafa Arzam, Taruna Shafa Tetty Chaidamsari, Tetty Tiara, Dede Titin Purnama Tri Muji Ermayanti Widodo . Widya Sari Winarso D. Widodo Winarso D.Widodo, Winarso Winarso Dradjad Widodo Winarso Drajad Widodo Y A Purwanto, Y A Yunita, Roza Yunus, Ismadi