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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Agrohorti Bulletin (e-Journal) Jurnal Ilmu Pertanian Indonesia Jurnal Fitopatologi Indonesia Jurnal Hortikultura Indonesia Jurnal Keteknikan Pertanian Jurnal Hortikultura Jurnal Pengkajian dan Pengembangan Teknologi Pertanian Jurnal Penelitian Tanaman Industri AGRIVITA, Journal of Agricultural Science Buletin Kebun Raya agriTECH JSDH EnviroScienteae Jurnal Penelitian Pertanian Tanaman Pangan ANNALES BOGORIENSES JURNAL PERTANIAN PRESISI (JOURNAL OF PRECISION AGRICULTURE) Journal of Tropical Crop Science ZIRAA'AH MAJALAH ILMIAH PERTANIAN Jurnal Penelitian Tanaman Industri (Littri) Jurnal Tanah dan Iklim

Slamet Susanto

Departemen Agronomi Dan Hortikultura, Fakultas Pertanian, Institut Pertanian Bogor

Author-ID : 484015

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Medicine & Pharmacology

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Karakteristik Lahan Bera Dengan Umur Berbeda dan Pengaruhnya Terhadap Dekomposisi Serasah di Manokwari, Papua Barat Susanto, Slamet Arif; Qayim, Ibnul; Triadiati, Triadiati
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) Vol 45, No 2 (2021)
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v45n2.2021.117-132

Abstrak. Karakteristik umur lahan bera memiliki peran penting dalam pengembalian hara melalui proses dekomposisi. Penelitian dekomposisi serasah dan cadangan karbon pada beberapa umur lahan bera telah dilakukan di Manokwari, Provinsi Papua Barat dari Juli 2020 sampai Januari 2021. Penelitian bertujuan menganalisis proses dekomposisi in situ serasah daun vegetasi lokal pada beberapa umur lahan bera, serta mengukur cadangan karbon dari vegetasi masing-masing lahan bera. Setiap umur lahan bera dipasang sebanyak 18 kantung serasah yang masing-masingnya berisi 20 g serasah daun dari vegetasi lokal lahan bera. Sebanyak tiga kantung serasah diambil setiap bulan dari masing-masing umur lahan bera, kemudian dikeringkan hingga bobot kering konstan. Cadangan karbon biomassa vegetasi dianalisis menggunakan persamaan alometrik berdasarkan diameter pohon setinggi dada (dbh). Hasil penelitian menunjukkan bahwa kehilangan bobot serasah setelah 6 bulan dekomposisi pada lahan bera 5, 10, dan 15 tahun masing-masing mencapai 92,62%; 94,00%; dan 97,12%. Konstanta dekomposisi (tetapan kehilangan bobot serasah) pada lahan bera 5 dan 10 tahun tergolong rendah yakni 0,65 dan 0,94. Lahan bera 15 tahun memiliki konstanta dekomposisi yang tergolong sedang yakni 1,18. Cadangan karbon pada lahan bera 5, 10, dan 15 tahun masing-masing sebesar 7,57; 32,63; dan 141,33 ton/ha. Penurunan rasio C/N setelah 6 bulan dekomposisi pada lahan bera 5, 10, dan 15 tahun masing-masing sebesar 66,67%; 56,25%; dan 39,39%. Dekomposisi serasah pada lahan bera 5 tahun dipengaruhi oleh curah hujan, sedangkan pada lahan bera 15 tahun dipengaruhi oleh kelembapan tanah. Penelitian ini mengindikasikan bahwa umur lahan bera menyebabkan perbedaan komposisi vegetasi, sehingga berpengaruh pada proses dekomposisi dan banyaknya cadangan karbon.Â Abstract. The characteristics of the fallow land have an important role in the return of nutrients through decomposition process. Research on litter decomposition and carbon stock on different ages of fallow has been carried out in Manokwari, West Papua from July 2020 to January 2021. The aim of the study was to analyze the in situ decomposition process of leaves litterfall from local vegetation at several ages of fallow, and also measure the biomass carbon stock of each fallow land. A total 18 litterbags were installed, each containing 20 g leaves litterfall from the local vegetation of the fallow land. Three litter bags from each age fallow were taken every month and dried to constant mass. Biomass carbon stocks were analyzed using an allometric equation based on the diameter of the trees at breast height (dbh). The results showed that the litter mass loss at fallow 5, 10, and 15 years were 92.62%; 94.00%; and 97.12% respectively after 6-month decomposition. The slowest decay constants (constants of litter mass loss) were 0.65 and 0.94 at fallows 5 and 10 years respectively, whereas at fallow 15 years with k 1.18. Carbon stocks in fallow land of 5, 10, and 15 years were 7.57; 32.63; and 141.33 ton/ha, respectively. The decrease of C/N ratios at fallow 5, 10, and 15 years were 66.67%; 56.25%; and 39.39% respectively after 6 month decomposition. Litter decomposition was influenced by local rainfall on fallow land at 5 years old and soil moisture at 15 years old. This study indicates that the age of fallow lands lead to differences in the composition of vegetation, so that it affects decomposition process and the amount of carbon stocks.

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.

Kandungan Beberapa Zat Endogen pada Buah Retensi dan Buah akan Rontok pada Mangga Sakhidin Sakhidin; Bambang S. Purwoko; Sudirman Yahya; R. Poerwanto; Slamet Susanto; A. S. Abidin
Indonesian Journal of Agronomy Vol. 34 No. 2 (2006): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The aim of this research was to study the relationship between fruit drop and contents of auxin, polyamines, ACC, total sugar, and starch. Cultivars of mango used were Gadung 21 and Lalijiwo.The persisting fruit and abscising fruits were used to quantify auxin, polyamine, ACC, total sugar, and starch. The content of polyamine and ACC was determined on pericarp, auxin on seed, whereas the content of starch and total sugar was determined on mesocarp. The result of research showed that fruit drop was preceded by low content of auxin that increased the sensitivity of abscission zone to ethylene. The increased sensitivity of abscission zone to ethylene was supported by low content of polyamine and high content of ACC. The abscising fruit has high content of starch, but low in total sugar content. Key words : Mango, persisting fruit, abscising fruit, auxin, polyamine, ACC, total sugar, starch

Respon Tanaman Pegagan (Centella asiatica L. Urban) Terhadap Pemberian Pupuk Alami di Bawah Naungan Neni Musyarofah; Slamet Susanto; Sandra A. Aziz; Suyanto Kartosoewarno
Indonesian Journal of Agronomy Vol. 35 No. 3 (2007): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The objectives of this experiment was to study the growth, yield and qualitative bioactive compounds of Indian pennyworth (Centella asiatica L. Urban) under different shading levels and biofertilizers. Field experiment was conducted from February until May 2006 at Kuntum Nurseries Bogor. Split plot design was used in this experiment. The main plot was shading level: 55, 65 and 75%. The sub plot was biofertilizer types: Fertifort Super, Fertifort Fine and NPK Novelgro fertilizer. The result of this experiment showed that plants under the 65% shading level significantly showed better growth, biomass weight and qualitative bioactive compounds (tanin, flavonoid, steroid and triterpenoid) than those of 75% shading level. The 75% shading level was unsuitable because all plants were dead at 10 weeks after fertilizer application; the 55% shading level gave the best growth responses but 55 and 65% shading level gave no significant differences in biomass weight. Biofertilizer gave no significant differences in leaf and stolon numbers, biomass weight and physiological characteristics except NPK content in plant tissue. Significant difference occured only in N plant tissue content because of interaction with shading level. The different effect in qualitative bioactive compound showed that saponin was found in 55% shading level but not in 65% shading level. Key words: Shading, biofertilizer, qualitative bioactive compound, Centella asiatica.

Perbanyakan Vegetatif Tanaman Jarak Pagar (Jatropha curcas L.) dengan Stek Batang: Pengaruh Panjang dan Diameter Stek Bambang Budi Santoso; , Hasnam; , Hariyadi; Slamet Susanto; Bambang Sapta Purwoko
Indonesian Journal of Agronomy Vol. 36 No. 3 (2008): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Since physic nut (Jatropha curcas L.) is heterozygous, sexual propagation results in great genotypic and phenotypic variability. Development of efficient techniques for asexual propagation would benefit the nursery industry as this would lead to selection and production of particular clones with desirable characteristics. Therefore, two following studies were conducted from September until December 2007. The objective was develop a protocol for vegetative propagation of physic nut by stem cutting in different size of cutting. The first experiment was dealt with stem cutting length (20 cm, 25 cm, and 30 cm) at the same size of diameter (2.5-3.0 cm), and the second experiment was dealt with diameter of stem cutting (3 cm, 2.5-2.9 cm, 2.0-2.4 cm, and 1.5-1.9 cm) at the same size of length (30 cm). Each of experiment was designed in Completely Randomized Design with three replications. Each experimental unit consisted of 25 seedlings. The result showed that cutting growth varied depending on length and diameter of stem cutting. However, better seedling growth and better survival of young plant of physic nut can be obtained from stem cutting with 20-30 cm in length and stem cutting with 2.0-2.9 cm in diameter. Key words: cutting diameter, cutting length, Jatropha, survival, transplanting

Efektivitas Strangulasi terhadap Pembungaan Tanaman Jeruk Pamelo ‘Cikoneng’ (Citrus grandis (L.) Osbeck) pada Tingkat Beban Buah Sebelumnya yang Berbeda Muhammad Thamrin; Slamet Susanto; Edi Santosa
Indonesian Journal of Agronomy Vol. 37 No. 1 (2009): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Biannual bearing fruit is a common phenomenon in tropical fruit trees. However, effectiveness of flowering induction on those fruits is still lack of study. The ojective of the research was to study the effectiveness of flowering induction on pummelo of different fruit load on previous year. Field experiment was conducted at farmer's orchad Bantarmara village, Cisarua, Sumedang Region, West Java (300 m above sea level) from August 2007 to April 2008. Experiment was carried out using Completely Randomize Block Design. Experiment was combination of high crop load and less crop load with strangulation position at main stem and primary branches. The results showed that crop load of previous year (higher and less) with strangulation position at primary branches had significant response to the number of flower clusters, flower buds, bloming flower, fruits formed, and fruit sets as compared to control, when strangulated at primary branches. Nevertheless, amount of fruit sets, level of greenness leaf and leaf area seened were not determined by fruit load non position of strangulation. This finding implies that fruit load management is an important factor in determining the success of flowering induction using strangulation. Key words: fruit load, strangulation, pummelo, flowering induction

Pengaruh Pemangkasan Cabang dan Penjarangan Bunga Jantan terhadap Pertumbuhan dan Produksi Gherkin dengan Budidaya Hidroponik Slamet Susanto; Edi Minaji Pribadi
Indonesian Journal of Agronomy Vol. 32 No. 1 (2004): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The objective of the research was to evaluate the effect of branch pruning and male flower thinning on growth and production of gherkin. The research was conducted in a plastic house at Pasir Sarongge Research Station of IPB, Cipanas, from December 1999 to February 2000. A Complete Random Design with two factors was used in this experiment. The first factor was branch pruning consisted of three intensity levels i.e. without branch pruning (CO), a part of branch pruning (CI), and total branch pruning (C2). The second factor was male flower thinning i.e. without thinning (BO), and with thinning (BI). Each treatment was replicated three times. Gherkin variety used in this experiment was SMR 58. The treatments were applied after el1lerging of male flower at 5 weeks after planting, and then it was replicated in every 3 days. Vegetative growth variables observed were length of stem and number of node per plant, while production components observed were number of female flower, number and weight of total fruit, and number and weight of marketable fruit. There was no interaction between branch pruning and male flower thinning treatments on all vegetative and generative variables. Both treatments did not show significant effect on vegetative growth as shown on stem length and node number. At the end of experiment (82 days after planting) the average of stem length was 230.4 - 247.6 cm and node number was 30.2 - 31.0 per plant. The treatments also did not show significant effect on production variable components, except for marketable fruit weight. Number of female flower was 19.0 - 20.3 per plant, while number of fruit was 15.2 - 16.3 per plant. The marketable fruit weight resulted from the total branch pruning treatment was 94% of the total fruit weight, showed significantly higher than that of the control plant (83%). There was a tendency for male flower thinning treatment to result higher marketable fruit as compared with that of the control ones. Key words.. Gherkin, Branch pruning, Male flower thinning, Hydroponics

Pola Kerontokan Buah Tiga Kultivar Mangga , Sakhidin; Bambang S . Purwoko; Roedhy Poerwanto; Slamet Susanto; Sudirman Yahya; Ahmad S. Abidin
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

Information on the pattern of fruit drop of mango is required to determine the appropriate method and time in reducing fruit drop. By this methodf, fruit retention or number of harvested fruit of mango can be increased.The aim of this research was to determine the pattern of fruit drop of Gadung 21, Manalagi 69 and Golek 3 I . The results of this researchs howedt hat the pattern of fruit drop of Gadung2 1, Golek 31 and Manalagi 69 was similar. All cultivars I showed that there was one peak (the highest number of fruit drop) in fruit drop. It occurred at 6 days after anthesis (DAA). After 24 DAA, the number offruit drop was constant, namely near to zero. It occurred until harvest.Key words: Mango, Fruit drop, Fruit set

Penampilan Pertumbuhan Jeruk Besar (Citrus grandis (L.) Osbeck) cv. Cikoneng pada Beberapa lnterstock Slamet Susanto; Ketty Suketi; , Mukhlas; Lia Rachmawati
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

Kualitas dan Daya Simpan Buah Jeruk Fremont (Citrus reticulate var. Fremont) yang Dipanen dari Tingkat Ketinggian Lahan yang Berbeda. Maya Dewi Sulistyningrum; Slamet Susanto
Indonesian Journal of Agronomy Vol. 32 No. 3 (2004): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The experiment was aimed to study the quality and shelflife of Fremont fruit harvested from different land elevation. Fruit were harvested according to orchard harvest criteria. The experiment used Randomized Complete Design, with the treatment of land elevation level i.e. 500 - 600 m, 600 - 700 m, 700 - 800 m above sea level. Land elevation level influence peel color, at the higher land elevation level the orange color on peel was more appeared. Land elevation level in the range of 500 - 800 m above sea level did nor affect firmness and total soluble solids (TSS) content in fruit juice at harvest time, however there was a tendency that higher acid and vitamin C content were observed in fruit of tree grown in the higher land elevation. The decrease on weight of fruit, fruit firmness, acid and vitamin C contents and increase of TSS content were observed during storage. The fruit of Fremont not be stored more than four weeks, because in this experiment, the fruit at four week after harvest experienced significant weight loss and severe peel shrinkage they resulted in unmarketable fruit.

Co-Authors , Hariyadi , Hariyadi3 , Hasnam , Mukhlas , Sakhidin , Setyono , Triadiati . Santosa . Saputera . Strisno . Sutrisno A. S. Abidin 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 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 Dianti Mayadika Putri 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 Gede Suastika Gede Suastika GEDE SUASTIKA Gede Suastika Giyanto, Giyanto Hadi K. Purwadaria Hariyadi Hariyadi Harliani Sri Utami Herik Sugeru Hermansyah, Dadang Hilda Susanti Hulu, Versi Putra Jaya I Wayan Budiastra IBNUL QAYIM Ilma Rahmawati 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 Kristriandiny, Oktiadewi Kudang B Seminar Kudang B. Seminar Leo Mualim Lia Rachmawati Made Ari Sanjaya Maya Dewi Sulistyningrum Maya Melati Moeljarno Djojomartono Moeljarno Djojomartono Moh Nailun Ni'am MOHAMMAD CHOLID MOHAMMAD CHOLID, MOHAMMAD Muhammad dan Heni Purnamawati Haryadi Danang Faqihhudin Muhammad Syukur Muhammad Thamrin Neni Musyarofah Nurul Khumaida Nurul Khumaida Nurul Khumaida 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 Resti Putri Septyani Resti Putri Septyani Retty Nurfazizah ROEDHY POERWANTO Roedy Poerwanto Rustam, Rustam Rustani, Dona Sakhidin Sakhidin Sandra A. Aziz Sandra Arifin Azis SANDRA ARIFIN AZIZ Santosa Santosa Sintho Wahyuning Ardie 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 Suyanto Kartosoewarno Titistyas Gusti Aji TRI ASMIRA DAMAYANTI Tri Muji Ermayanti Tri Muji Ermayanti Tri Muji Ermayanti Ummu Kalsum Ummu Kalsum Ummu Kalsum Ummu Kalsum Ummu Kalsum Wahyu Fikrinda Winarso D. Widodo Wulandari, Dyah Retno Yosephine Sista Parameswara Yudi Chadirin Yul Y Nazaruddin

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