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Identifikasi Patogen Penyebab Busuk Pangkal Batang pada Tanaman Jeruk di Tanah Karo Marpaung, A E; Silalahi, Frit H; Purba, EIY
Jurnal Hortikultura Vol 20, No 3 (2010): September 2010
Publisher : Indonesian Center for Horticultural Research and Development

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

ABSTRAK. Pertanaman jeruk saat ini, di Kabupaten Karo, memperlihatkan produktivitas rendah dan umur tanamanyang pendek. Hal tersebut disebabkan oleh serangan Phytophthora spp. yang merupakan patogen penyebab penyakitbusuk pangkal batang pada tanaman jeruk. Penelitian bertujuan mengidentifikasi Phytophthora spp., patogen penyebabpenyakit busuk pangkal batang pada tanaman jeruk. Penelitian dilakukan di Laboratorium Penyakit, Kebun PercobaanTanaman Buah Berastagi dalam bulan Januari-Februari 2007. Daerah pengambilan sampel ialah di Desa SumbulKecamatan Kabanjahe, dan Desa Barusjahe Kecamatan Barusjahe. Hasil penelitian menunjukkan bahwa jamurPhytophthora palmivora, P. citrophthora, dan P. parasitica ditemukan di Desa Sumbul. Jamur P. citrophthora danP. parasitica juga diperoleh di Desa Barusjahe. Sporangia dan misellium P. palmivora di Desa Sumbul berwarnamerah jambu dan putih, P. citrophthora berwarna putih dan hijau kehitaman, serta P. parasitica berwarna putihdan kuning muda, sedangkan di Desa Barusjahe P. citrophthora berwarna putih dan merah jambu dan P. parasiticaberwarna putih. Ukuran (panjang x lebar) sporangia P. palmivora (33-45) x (30-50) μm, P. citrophthora di DesaSumbul (40-50) x (34-50) μm, dan di Desa Barusjahe (30-45) x (30-45) μm, P. parasitica di Desa Sumbul (33-35) x(29-30) μm, dan di Desa Barusjahe (30-40) x (28-30) μm. Ukuran sporangiofor P. palmivora pada umumnya sebesar6,25-250 μm, panjang sporangiofor P. citrophthora di Desa Sumbul antara 25-68,75 μm dan di Desa Barusjahe12,5-100 μm, sedangkan panjang sporangiofor P. parasitica di Desa Sumbul 43,75-162,5 μm dan di Desa Barusjahe6,25-150 μm. Spesies phytophthora yang paling banyak ditemukan di Desa Sumbul adalah P. palmivora, sedangkandi daerah Barusjahe adalah P. citrophthora. Hasil identifikasi yang diperoleh dari penelitian ini akan bermanfaatdalam menentukan cara pengendalian Phytophthora spp. pada tanaman jeruk.ABSTRACT. Marpaung, A.E., F.H. Silalahi, and E.I.Y. Purba. 2010. Identification of the Causal Agent ofBrown Rot Gummosis on Citrus in Karo Region. Citrus cultivation in Karo region has exhibited low yieldingand short plant lifetime. This condition was caused by the infection of Phytophthora spp., the causal agent of brownrot gummosis on citrus. The objectives of the research was to identify the occurence of Phytophthora spp. on citrusplants. The research was conducted in Berastagi Fruits Plant Research Farm, from January to February 2007. Thesamples were collected from Kabanjahe District at the viilage of Sumbul and Barusjahe. The results indicated, thatPhytophthora palmivora, P. citrophthora, and P. parasitica were obtained from Sumbul village, while P. citrophthoraand P. parasitica were also found in Barusjahe village. The color of sporangia and misellium of P. palmivora originatedfrom Sumbul Village was white, P. citrophthora was white and dark green, and P. parasitica were pink and yellow,meanwhile the color of at P. citrophthora obtained from Barusjahe village were white and pink and P. parasitica waswhite. The size of sporangia P. palmivora was (33-45) x (30-50) μm, P. citrophthora at Sumbul Village was (40-50)x (34-50) μm, and from Barusjahe Village was (30-45) x (30-45) μm, P. parasitica at Sumbul Village was (33-35)x (29-30) μm and Barusjahe Village was (30-40) x (28-30) μm. The general length of sporangiofor P. palmivorawas 6.25-250 μm. The length of sporangiofor P. citrophthora at Sumbul Village was 25-68.75 μm and at BarusjaheVillage was 12.5-100 μm, even though P. parasitica at Sumbul Village was 43.75-162.5 μm and Barusjahe Village was6.25-150 μm. The most species of phytophthora found at Sumbul Village was P. palmivora and at Barusjahe Villagewas P. citrophthora. The result of the identification wil beneficial for the development of easier control measures ofPhytophthora spp. disease on citrus.
Pengaruh Sistem Lanjaran dan Tingkat Kematangan Buah terhadap Mutu Markisa Asam Silalahi, F H; Hutabarat, R C; Marpaung, A E; Napitupulu, B
Jurnal Hortikultura Vol 17, No 1 (2007): Maret 2007
Publisher : Indonesian Center for Horticultural Research and Development

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

ABSTRAK. Markisa Siu merupakan buah yang banyak diusahakan di daerah dataran tinggi Sumatera Utara dan Sulawesi Selatan. Buah yang dihasilkan dapat dikonsumsi segar maupun sebagai bahan baku untuk pembuatan sirup. Penelitian bertujuan mengetahui pengaruh sistem lanjaran dan waktu panen terhadap kuantitas dan kualitas buah markisa asam ungu. Penelitian dilakukan di Kebun Percobaan Tamanan Buah Berastagi mulai bulan Januari sampai Desember 2004. Rancangan yang digunakan adalah petak terpisah dengan 3 ulangan. Sebagai petak utama adalah sistem lanjaran yang terdiri dari para-para dan pucuk bambu. Sebagai anak petak adalah tingkat kematangan buah terdiri dari (50, 75, dan 100% ungu). Hasil penelitian menunjukkan bahwa perlakuan sistem lanjaran dan interaksinya dengan tingkat kematangan buah tidak berpengaruh nyata terhadap bobot buah, bobot sari buah segar, padatan terlarut total, total asam, dan vitamin C. Tingkat kematangan buah berpengaruh nyata terhadap padatan terlarut total dan total asam, namun tidak berpengaruh nyata terhadap bobot buah, bobot sari buah, dan vitamin C pada buah petik segar. Buah markisa asam ungu sudah dapat dipanen pada tingkat kematangan 50% ungu untuk menghasilkan bobot buah, kandungan sari buah, padatan terlarut total, dan total asam yang tertinggi, masing-masing sebesar 54,73 g/buah, 29,87 g/buah, 12,12oBrix, dan 3,03%, namun kandungan vitamin C yang dihasilkan relatif rendah (71,28 mg/100 g bahan) dibandingkan dengan tingkat kematangan 75% (78,32 mg/100 g bahan) ungu dan 100% ungu (75,68 mg/100 g bahan).ABSTRACT. Silalahi, F.H., R.C. Hutabarat, A.E. Marpaung, and B. Napitupulu, 2007. The Effect of Trellis System and Fruit Maturity on Quality of Purple Passion Fruit. Purple passion fruit has been cultivated on highland in North Sumatera and South Sulawesi. The product is consumed as fresh fruit or syrup. The aim of this research was to find out the effect of trellis system and fruit maturity on quantity and quality of purple passion fruit. The research was conducted at Berastagi Experimental Garden on January to December 2004. Split plot design was used with 3 replications. The main plot was trellis system with 2 treatments para-para and bamboo shoot. The level of fruit maturity was used as subplot, purple 50, 75, and 100%. The results showed that the trellis system and it’s interaction with fruit maturity did not significantly affect fruit weight, juice content, total soluble solid, total acid, and vitamine C content of fresh fruit. The fruit maturity significantly affect total soluble solid, and total acid, but did not significantly affect fruit weight, juice, and vitamine C content of fresh fruit. Fruit maturity of purple 50% produced the highest fruit weight, fruit juice, total soluble solid, total acid content i.e. 54.73 g/fruit, 29.87 g/fruit, 12.12oBrix, and 3.03% respectively. Whereas the vitamine C content was lower (71.28 mg/100 g material) than fruit maturity of purple 75% (78.32 mg/100 g) and purple 100% (75.68 mg/100 g).
Pengaruh Sistem Lanjaran dan Tingkat Kematangan Buah terhadap Mutu Markisa Asam F H Silalahi; R C Hutabarat; A E Marpaung; B Napitupulu
Jurnal Hortikultura Vol 17, No 1 (2007): Maret 2007
Publisher : Indonesian Center for Horticulture Research and Development

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jhort.v17n1.2007.p%p

Abstract

ABSTRAK. Markisa Siu merupakan buah yang banyak diusahakan di daerah dataran tinggi Sumatera Utara dan Sulawesi Selatan. Buah yang dihasilkan dapat dikonsumsi segar maupun sebagai bahan baku untuk pembuatan sirup. Penelitian bertujuan mengetahui pengaruh sistem lanjaran dan waktu panen terhadap kuantitas dan kualitas buah markisa asam ungu. Penelitian dilakukan di Kebun Percobaan Tamanan Buah Berastagi mulai bulan Januari sampai Desember 2004. Rancangan yang digunakan adalah petak terpisah dengan 3 ulangan. Sebagai petak utama adalah sistem lanjaran yang terdiri dari para-para dan pucuk bambu. Sebagai anak petak adalah tingkat kematangan buah terdiri dari (50, 75, dan 100% ungu). Hasil penelitian menunjukkan bahwa perlakuan sistem lanjaran dan interaksinya dengan tingkat kematangan buah tidak berpengaruh nyata terhadap bobot buah, bobot sari buah segar, padatan terlarut total, total asam, dan vitamin C. Tingkat kematangan buah berpengaruh nyata terhadap padatan terlarut total dan total asam, namun tidak berpengaruh nyata terhadap bobot buah, bobot sari buah, dan vitamin C pada buah petik segar. Buah markisa asam ungu sudah dapat dipanen pada tingkat kematangan 50% ungu untuk menghasilkan bobot buah, kandungan sari buah, padatan terlarut total, dan total asam yang tertinggi, masing-masing sebesar 54,73 g/buah, 29,87 g/buah, 12,12oBrix, dan 3,03%, namun kandungan vitamin C yang dihasilkan relatif rendah (71,28 mg/100 g bahan) dibandingkan dengan tingkat kematangan 75% (78,32 mg/100 g bahan) ungu dan 100% ungu (75,68 mg/100 g bahan).ABSTRACT. Silalahi, F.H., R.C. Hutabarat, A.E. Marpaung, and B. Napitupulu, 2007. The Effect of Trellis System and Fruit Maturity on Quality of Purple Passion Fruit. Purple passion fruit has been cultivated on highland in North Sumatera and South Sulawesi. The product is consumed as fresh fruit or syrup. The aim of this research was to find out the effect of trellis system and fruit maturity on quantity and quality of purple passion fruit. The research was conducted at Berastagi Experimental Garden on January to December 2004. Split plot design was used with 3 replications. The main plot was trellis system with 2 treatments para-para and bamboo shoot. The level of fruit maturity was used as subplot, purple 50, 75, and 100%. The results showed that the trellis system and it’s interaction with fruit maturity did not significantly affect fruit weight, juice content, total soluble solid, total acid, and vitamine C content of fresh fruit. The fruit maturity significantly affect total soluble solid, and total acid, but did not significantly affect fruit weight, juice, and vitamine C content of fresh fruit. Fruit maturity of purple 50% produced the highest fruit weight, fruit juice, total soluble solid, total acid content i.e. 54.73 g/fruit, 29.87 g/fruit, 12.12oBrix, and 3.03% respectively. Whereas the vitamine C content was lower (71.28 mg/100 g material) than fruit maturity of purple 75% (78.32 mg/100 g) and purple 100% (75.68 mg/100 g).
Identifikasi Patogen Penyebab Busuk Pangkal Batang pada Tanaman Jeruk di Tanah Karo A E Marpaung; Frit H Silalahi; EIY Purba
Jurnal Hortikultura Vol 20, No 3 (2010): September 2010
Publisher : Indonesian Center for Horticulture Research and Development

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jhort.v20n3.2010.p%p

Abstract

ABSTRAK. Pertanaman jeruk saat ini, di Kabupaten Karo, memperlihatkan produktivitas rendah dan umur tanamanyang pendek. Hal tersebut disebabkan oleh serangan Phytophthora spp. yang merupakan patogen penyebab penyakitbusuk pangkal batang pada tanaman jeruk. Penelitian bertujuan mengidentifikasi Phytophthora spp., patogen penyebabpenyakit busuk pangkal batang pada tanaman jeruk. Penelitian dilakukan di Laboratorium Penyakit, Kebun PercobaanTanaman Buah Berastagi dalam bulan Januari-Februari 2007. Daerah pengambilan sampel ialah di Desa SumbulKecamatan Kabanjahe, dan Desa Barusjahe Kecamatan Barusjahe. Hasil penelitian menunjukkan bahwa jamurPhytophthora palmivora, P. citrophthora, dan P. parasitica ditemukan di Desa Sumbul. Jamur P. citrophthora danP. parasitica juga diperoleh di Desa Barusjahe. Sporangia dan misellium P. palmivora di Desa Sumbul berwarnamerah jambu dan putih, P. citrophthora berwarna putih dan hijau kehitaman, serta P. parasitica berwarna putihdan kuning muda, sedangkan di Desa Barusjahe P. citrophthora berwarna putih dan merah jambu dan P. parasiticaberwarna putih. Ukuran (panjang x lebar) sporangia P. palmivora (33-45) x (30-50) μm, P. citrophthora di DesaSumbul (40-50) x (34-50) μm, dan di Desa Barusjahe (30-45) x (30-45) μm, P. parasitica di Desa Sumbul (33-35) x(29-30) μm, dan di Desa Barusjahe (30-40) x (28-30) μm. Ukuran sporangiofor P. palmivora pada umumnya sebesar6,25-250 μm, panjang sporangiofor P. citrophthora di Desa Sumbul antara 25-68,75 μm dan di Desa Barusjahe12,5-100 μm, sedangkan panjang sporangiofor P. parasitica di Desa Sumbul 43,75-162,5 μm dan di Desa Barusjahe6,25-150 μm. Spesies phytophthora yang paling banyak ditemukan di Desa Sumbul adalah P. palmivora, sedangkandi daerah Barusjahe adalah P. citrophthora. Hasil identifikasi yang diperoleh dari penelitian ini akan bermanfaatdalam menentukan cara pengendalian Phytophthora spp. pada tanaman jeruk.ABSTRACT. Marpaung, A.E., F.H. Silalahi, and E.I.Y. Purba. 2010. Identification of the Causal Agent ofBrown Rot Gummosis on Citrus in Karo Region. Citrus cultivation in Karo region has exhibited low yieldingand short plant lifetime. This condition was caused by the infection of Phytophthora spp., the causal agent of brownrot gummosis on citrus. The objectives of the research was to identify the occurence of Phytophthora spp. on citrusplants. The research was conducted in Berastagi Fruits Plant Research Farm, from January to February 2007. Thesamples were collected from Kabanjahe District at the viilage of Sumbul and Barusjahe. The results indicated, thatPhytophthora palmivora, P. citrophthora, and P. parasitica were obtained from Sumbul village, while P. citrophthoraand P. parasitica were also found in Barusjahe village. The color of sporangia and misellium of P. palmivora originatedfrom Sumbul Village was white, P. citrophthora was white and dark green, and P. parasitica were pink and yellow,meanwhile the color of at P. citrophthora obtained from Barusjahe village were white and pink and P. parasitica waswhite. The size of sporangia P. palmivora was (33-45) x (30-50) μm, P. citrophthora at Sumbul Village was (40-50)x (34-50) μm, and from Barusjahe Village was (30-45) x (30-45) μm, P. parasitica at Sumbul Village was (33-35)x (29-30) μm and Barusjahe Village was (30-40) x (28-30) μm. The general length of sporangiofor P. palmivorawas 6.25-250 μm. The length of sporangiofor P. citrophthora at Sumbul Village was 25-68.75 μm and at BarusjaheVillage was 12.5-100 μm, even though P. parasitica at Sumbul Village was 43.75-162.5 μm and Barusjahe Village was6.25-150 μm. The most species of phytophthora found at Sumbul Village was P. palmivora and at Barusjahe Villagewas P. citrophthora. The result of the identification wil beneficial for the development of easier control measures ofPhytophthora spp. disease on citrus.
Co-Authors B Napitupulu EIY Purba F H Silalahi Frit H Silalahi R C Hutabarat