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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Buletin Agrohorti Jurnal Fitopatologi Indonesia Jurnal Hortikultura Indonesia (JHI) Jurnal Hortikultura Journal of Tropical Crop Science

Ketty Suketi

Departemen Agronomi Dan Hortikultura, Fakultas Pertanian, Institut Pertanian Bogor. Program Studi Agronomi Dan Hortikultura, Sekolah Pascasarjana Institut Pertanian Bogor, Jl. Meranti Kampus IPB Dramaga, Bogor 16680, Indonesia.

Author-ID : 390299

Agriculture, Biological Sciences & Forestry Economics, Econometrics & Finance Medicine & Pharmacology

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Karakter Fisikokimia Buah Melon Cantaloupe (Cucumis melo L. var. Cantaloupe) yang Dipanen Awal: Physicochemical Characteristics of Early Harvested Cantaloupe Melon (Cucumis melo L. var. Cantaloupe) Nidya Putri Zulia Kusuma Wardani; Suketi, Ketty; Arif, Abdullah Bin
Jurnal Hortikultura Indonesia (JHI) Vol. 16 No. 1 (2025): Jurnal Hortikultura Indonesia (JHI)
Publisher : Indonesian Society for Horticulture / Department of Agronomy and Horticulture

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jhi.16.1.17-23

Melon cantaloupe (Cucumis melo L var. Cantaloupe) merupakan buah klimakterik sehingga cepat mengalami kemunduran kualitas setelah buah dipanen. Buah melon cantaloupe yang dipanen awal setelah matang fisiologi dapat memperpanjang umur simpannya. Penelitian ini bertujuan untuk menganalisis pengaruh fisikokimia buah melon cantaloupe yang dipanen awal selama penyimpanan. Penelitian dilakukan di greenhouse Kebun Tajur, Pusat Kajian Hortikultura dan Tropika, Institut Pertanian Bogor (PKHT IPB) dan Laboratorium Pascapanen dan Biomassa Departemen Agronomi dan Hortikultura IPB. Pengamatan kualitas pascapanen dilakukan menggunakan metode nondestruktif dan destruktif. Parameter yang diamati meliputi laju respirasi, produksi etilen, perubahan kerutan kulit, PTT, ATT, dan kandungan vitamin C. Hasil penelitian menunjukkan bahwa buah melon cantaloupe yang dipanen 32 hari setelah antesis (HSA) mengalami puncak respirasi pada 7 hari setelah panen (HSP), puncak produksi etilen pada 9 HSP, pengerutan kulit buah pada 18 HSP, kandungan PTT tertinggi (6.99 oBrix), ATT (0.02 mL g-1), rasio PTT/ATT (493.75), dan kandungan vitamin C (20.65 mg (100 g)-1). Kata kunci: buah klimakterik, kualitas pascapanen, umur simpan, produksi etilen

The Effects of Different Rates of Chicken Manure and Harvest Intervals on the Bioactive Compounds of Bitter Leaf (Vernonia amygdalina Del.) Betty, Betty; Aziz, Sandra Arifin; Suketi, Ketty
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.8.02.80-88

Bitter leaf (Vernonia amygdalina Del.) is a valuable functional vegetable and traditional medicinal plant in many tropical countries including Indonesia. Bitter leaf is commonly used to remedy hypertension and diabetes among Indonesian people. The leaf extract comprises bioactive compounds such as sesquiterpene lactones, steroid glycosides, and flavonoids. Despite its growing market demand, there is insufficient data on agronomic practice in order to obtain optimum yield with high bioactive compounds. The experimental design used was a randomized complete block design with two factors namely chicken manure rates (0, 2.5, 5, and 7.5 kg per plant) and harvest intervals (2 and 3 months). There was a significant difference in fresh and dry weights of leaves, chlorophyll a and b, carotenoids, nitrogen concentration, anthocyanins, and flavonoids among different manure treatment. The highest concentration and production of bioactive compounds on the bitter leaf was found on the highest treatment of 7.5 kg chicken manure per plant. The harvest interval of three months significantly increased fresh and dry weights of leaves, concentration of anthocyanins, phosphorus, and potassium, uptake of phosphorus and potassium, and production of anthocyanins and flavonoids. Cultivation using chicken manure with frequent period of pruning can enhance the production of biomass as well as secondary metabolites in bitter leaf.

Fruit Scar Incidence and Its Effect on Guava ‘Kristal’ Fruit Quality (Psidium guajava L.) at Low- and Middle-altitude Orchards in Bogor, Indonesia Musyarofah, Neni; Susanto, Slamet; Aziz, Sandra Arifin; Suketi, Ketty; 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

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.

Effects of Chitosan and 1-MCP on the Physical and Chemical Quality of Salak “Pondoh” (Salacca edulis REINW.) Fruits Susanti, Lea; Suketi, Ketty; Kurniawati, Ani; Setyadjit
Journal of Tropical Crop Science Vol. 11 No. 01 (2024): 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.11.01.39-48

Salak, or snake fruit, is a tropical fruit with a short shelf life when stored at room temperatures. The fruit’s base, if injured or bruised, can serve as an entry point for microbes, leading to physical and chemical damage to the fruits. This research aims to determine if chitosan and 1-methylcyclopropene (1-MCP) treatment can prolong the shelf life of salak “Pondoh”. The study tested two factors, chitosan (0%, 0.5%, 1.0%, 1.5%) and 1-MCP concentrations (0, 0.5, 1.0, 1.5 µL.L-1). The findings indicate that the application of chitosan and 1-MCP treatments did not significantly extend the shelf life of the fruits on the 15th day of observation. However, 1.0% chitosan combined with 1.5 µL.L-1 1-MCP and 1.5% chitosan combined with 0.5 µL.L-1 1-MCP proved effective in enhancing the fruit’s overall quality and maintained low ethylene production, high water content, and enhanced the organoleptic attributes including ease of peeling, fruit flesh color, texture, aroma, and taste.

Pemanfaatan Khamir Antagonis untuk Memperpanjang Umur Simpan dan Mengendalikan Penyakit Antraknosa Buah Pepaya Lestari, Mutiara Dwi; Suketi, Ketty; Widodo, Winarso Drajad; Wiyono, Suryo
Jurnal Agronomi Indonesia (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

Pepaya adalah buah klimakterik yang memiliki umur simpan pendek dan potensi gangguan penyakit antraknosa pada saat tahap pascapanen yang disebabkan oleh patogen Colletotrichum gloeosporioides. Tujuan dari penelitian ini adalah mengkaji keefektifan beberapa spesies khamir antagonis untuk memperpanjang umur simpan dan mengendalikan penyakit antraknosa pada pascapanen buah pepaya Callina. Penelitian ini dilaksanakan di kebun pepaya Desa Kanaga, Kabupaten Lebak, Banten pada November 2018 sampai Juli 2019 dan Laboratorium Pascapanen AGH, IPB pada bulan Maret sampai dengan Juli 2019. Penelitian ini menggunakan rancangan kelompok lengkap teracak dengan perlakuan lima jenis khamir yaitu Cryptococcus albidus Yp, Aureobasidium pullulans Dmg 30 DEP, Rhodotorula minuta Dmg 16 BEP, Candida tropicalis Lm 13 BE, dan Pseudozyma hubeiensis Dmg 18 BEP, dan sebagai pembanding perlakuan fungisida berbahan aktif azoksistrobin serta tanpa perlakuan sebagai kontrol. Hasil penelitian menunjukkan penggunaan khamir Candida tropicalis, Aureobasidium pullulans, dan Cryptococcus albidus dapat memperpanjang umur simpan buah pepaya Callina masing-masing 12.6, 12.4, dan 12.2 hari, lebih lama dibandingkan kontrol yang hanya 7 hari, dan efektif mengendalikan penyakit antraknosa dengan tingkat penekanan secara berturut-turut 58.33%, 54.17%, dan 50.00%, selama penyimpanan. Penggunaan khamir antagonis tidak mempengaruhi mutu fisik dan kimia buah pepaya Callina. Kata kunci: buah klimakterik, Colletotrichum gloeosporioides, pascapanen

Studi Degreening, Kesegaran, dan Daya Simpan Buah Naga Merah (Hylocereus polyrhizus (Weber) Britton & Rose) untuk Menentukan Kriteria Panen Optimum Suketi, Ketty; Widodo, Winarso Drajad; Maulida, Farah
Jurnal Agronomi Indonesia (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

Buah naga merah adalah buah non klimakterik dengan lintasan fotosintesis crassulacean acid metabolism. Kematangan optimum ditandai dengan warna kulit buah merah 100%. Tujuan percobaan adalah mempelajari perubahan warna kulit terkait dengan kesegaran dan daya simpan buah naga merah untuk menentukan kriteria panen optimum. Bahan percobaan disiapkan di kebun Sabisa Farm, Sindang Barang, Bogor (60 35’ 16” LS, 1060 46’ BT; elevasi 219 m di atas permukaan laut). Percobaan menggunakan rancangan kelompok lengkap teracak dengan perlakuan 5 taraf umur panen, yaitu 30, 32, 34, 36, dan 38 hari setelah antesis (HSA) dengan 5 ulangan. Hasil percobaan menunjukkan bahwa kulit buah naga merah 30 HSA memiliki skala warna 2 (1-25% merah), buah 32 HSA memiliki skala warna 4 (26-50% merah), dan buah 34, 36, dan 38 HSA telah mencapai skala warna 6 (100% merah) ketika dipanen. Kulit buah 30 HSA memerlukan waktu 6 hari setelah panen (HSP) dan buah 32 HSA memerlukan waktu 3 HSP untuk mencapai warna merah 100%. Pada saat warna merah 100%, buah 30 - 38 HSA memiliki kandungan padatan terlarut total 11.7 hingga 13.5 oBrix yang masih memenuhi standard pemasaran buah naga sebesar 11.0 oBrix. Kandungan asam tertitrasi total menurun, tetapi kandungan vitamin C meningkat dengan meningkatnya umur panen. Kata kunci: CAM, kematangan pascapanen, kesegaran buah, satuan panas, tanaman hari-panjang

Evaluation of phosphorus fertilizer rate based on Upland Soil Test Kit analysis for tomato fertigation Alveno, Vitho; D. Susila, Anas; Suketi, Ketty; Maharijaya, Awang
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 52 No. 2 (2024): Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
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 | DOI: 10.24831/jai.v52i2.52177

Upland Soil Test Kit (PUTK) is a rapid soil analysis kit that estimates the nutrient availability in soil. From previous studies, tomato plant production showed a good correlation with available phosphorus (P) and potassium (K) analysis using the PUTK. This study aimed to find the optimal P fertilizer rate based on PUTK analysis for tomato fertigation. This experiment was carried out using a randomized complete block design, four replications with a single factor, namely P fertilizer rate comprising 0% X, 50% X, 100% X, 150% X, and 200% X, with X the recommended P fertilizer of PUTK on moderate P availability (175 kg ha1). The ANOVA showed that P fertilizer did not significantly affect the vegetative growth, production, and fruit quality of tomatoes. It means that PUTK analysis had low accuracy as a basis for determining the optimum P fertilizer rate for tomato fertigation. The low accuracy could be due to PUTK underestimating the status of soil P availability. Mechlich-1 analysis showed that the experimental field had high P availability (44.6 ppm), while PUTK analysis still indicates moderate P availability. This shows that PUTK needs to be developed further, especially quantifying the result to help make informed and accurate decisions. Keywords: precision farming; precision fertilization; Upland Soil Test Kit; FERADS; sustainable agriculture

Pengelolaan Peperomia (Peperomia sp.), Begonia (Begonia sp.), Bromelia (Neoregelia schultesiana), dan Hortensia (Hydrangea macrophylla) di Bogor, Jawa Barat Susanto, Renaldy; Suketi, Ketty; Susanto, Slamet
Buletin Agrohorti Vol. 12 No. 1 (2024): Buletin Agrohorti
Publisher : Departemen Agronomi dan Hortikultura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agrob.v12i1.51529

Kegiatan penelitian dilaksanakan pada bulan Maret–Juli 2021 di Bogor, Jawa Barat. Penelitian bertujuan untuk meningkatkan kemampuan dalam pengelolaan tanaman hias khususnya peperomia, bromelia, begonia, dan hortensia. Kegiatan pengelolaan tanaman hias mencakup jadwal produksi mulai dari persiapan tanam hingga siap panen dan kriteria panen tanaman. Pengamatan tanaman Peperomia obtusifolia, Neoregelia schultesiana, dan Hydrangea macrophylla meliputi jumlah daun dan tinggi tanaman. Pengukuran tanaman Peperomia argyreia dan Peperomia caperata meliputi jumlah tunas. Pengukuran Begonia ‘orococo’ meliputi panjang daun, lebar daun, dan jumlah daun. Kegiatan budidaya tanaman hias yang dilakukan meliputi persiapan media tanam, pembibitan, penyiraman, pemupukan, pengendalian hama penyakit, panen, dan pascapanen. Hasil pengamatan pada tanaman Peperomia obtusifolia, Neoregelia schultesiana, dan Begonia ‘orococo’ yang menggunakan metode perbanyakan stek batang tergolong cepat, sedangkan Peperomia caperata dan Peperomia argyreia yang diperbanyak dengan menggunakan metode stek daun memiliki pertumbuhan yang lambat sehingga selama penelitian tanaman tidak memenuhi kriteria pemasaran. Hydrangea macrophylla memiliki umur panen rata-rata sekitar 15 MST. Kemampuan teknis mahasiswa meningkat dalam pengelolaan tanaman hias. Hasil analisis usahatani dengan asumsi luasan 200 m2 pada Peperomia obtusifolia, Peperomia argyreia, Peperomia caperata, Begonia ‘orococo’, dan Neoregelia schultesiana menunjukkan hasil R/C rasio >1 yang berarti menguntungkan. Kata kunci: analisis usaha tani, kriteria panen, pembibitan tanaman hias, stek daun, stek batang

Optimizing the Application of Complete Microfertilizer in Fertigation for Cayenne Pepper (Capsicum frutescens L.) Azzuhdy, Muhammad Zakiyuddin Siroj; Suketi, Ketty; Susila, Anas Dinurrohman; Krisantini , Krisantini
Journal of Tropical Crop Science Vol. 13 No. 01 (2026): 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.13.01.61-74

Cayenne pepper (Capsicum frutescens) is one of the important horticultural commodities in Indonesia. According to Central Statistics Agency data, annual consumption has been rising amid fluctuating production, including a 37.68-thousand-ton decline in 2023 compared with 2022. Cayenne pepper requires a specific nutrient profile to achieve optimal yields. Micronutrients, including boron, copper, iron, manganese, molybdenum, and zinc, are vital for photosynthesis, flower development, and nutrient uptake; deficiencies impair growth, fruit quality, and disease resistance, underscoring the need for balanced fertilization. Micronutrient deficiencies can reduce plant growth, fruit quality, and disease susceptibility. Research on micronutrient provision in cayenne pepper plants remains limited. This research aims to determine the most effective method of nutrient application for cayenne pepper plants. The design used was a single-factor randomized group design. The results of the study demonstrate that micronutrient applications can increase the height and diameter of cayenne pepper stems, with foliar spray applications yielding the best response in terms of vegetative parameters. However, micro-nutrient application has not significantly affected the yield and yield components of cayenne pepper.

Penampilan Pertumbuhan Jeruk Besar (Citrus grandis (L.) Osbeck) cv. Cikoneng pada Beberapa lnterstock Slamet Susanto; Ketty Suketi; , Mukhlas; Lia Rachmawati
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 32 No. 2 (2004): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The purpose of the research was to study the growth performance of pummelo cv. Cikoneng grafted on several interstocks. Four interstock cultivars i.e. Flying Dragon (Poncirus trifoliata Var. Monstrosa), Troyer (Poncirus trifoliata x Citrus sinensis), Citrumelo (Citrus paradisi x Poncirus trifoliata) and Rangpur Lime (Citrus limonia Os beck x Troyer Citrange) weres ubjectedt o this experiment.A ll interstocksw ereg rafted on JapanscheC itroen rootstock.The experiment was arranged in a Randomized Block Design. All seedlings grew normal, no incompatibility symptom between scion and interstocks was observed. Rangpur Lime interstock tended to retard scion growth, inversely, Citrumelo interstock was the most promoted scion growth. Flying Dragon and Troyer had intermediate characteristic, their effect on scion growth was between Rangpur Lime andCitrumelo. Key words: Pummelo, Cikoneng, lnterstock

Co-Authors , Mukhlas Abdullah Bin Arif Aidil Fitriansyah Alveno, Vitho Anas Dinurrohman Susila Ani Kurniawati Arista, Mei Lianti Awang Maharijaya Azzuhdy, Muhammad Zakiyuddin Siroj betty betty Betty Tjhia Cenra Intan Hartuti Tuharea Chandi Tri Akbar DADANG DADANG Deli, Syekh Zulfadli Arofah Dhika Prita Hapsari Dian Pratanda Rizki Didy Sopandie Efendi, Darda Elke Camelia Halim Faqih Udin Farah Maulida Febjislami, Shalati Fidianinta , Fitria Andini Hamdani, Kiki Kusyaeri Imanda, Nandya Jamaluddin, Moh Agus Jian Ayu Pratiwi Juang G. Kartika Juang Gema Kartika Krisantini Krisantini , Krisantini Lestari, Mutiara Dwi Lia Rachmawati M. Luthfan Taris Mathias Pratama Mei Lianti Arista Moh Agus Jamaluddin Mohamad Rahmad Suhartanto Muhamad Noor Azizu, Muhamad Noor Muhamad Syukur Muhammad Syaifuddin Abdurrohim Mukdisari, Yurisqi Mustika Dwi Rahayu Muthi’ah Khairun Nisa Nadiyah Mawaddah Ayuningtyas Nandya Imanda Nasib, Samson Bin Natalia, Cristina Evi Neni Musyarofah Nian Rimayanti H. Nicha Muslimawati Nidya Putri Zulia Kusuma Wardani Nilam Mayasari Nur Asmah, Nur Nurkholis Nurkholis Purwono Purwono, Purwono Putra, Bagas Akmala Rahardjo, Rizky RAHMI YUNIANTI Rahmi Yunianti Rasmani, Rasmani Riana Jumawati Risna rusdan Rizki, Dian Pratanda Rizky Rahardjo Roedhy Poerwanto Samson Bin Nasib Sandra Arifin Aziz Septy Yurihastuti Setyadjit Shalati Febjislami Slamet Susanto Sobir Sobir Sriani Sujiprihati Sriani Sujiprihati Sriani Sujiprihati Suryo Wiyono Susanti, Lea Susanto, Renaldy Tanari, Yulinda Turi Handayani Winarso D. Widodo Winarso Drajat Widodo Yurihastuti, Septy Yusnita Sari

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