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THE WHITE-BELLIED PLANTHOPPER (HEMIPTERA: DELPHACIDAE) INFESTING CORN PLANTS IN SOUTH LAMPUNG, INDONESIA Susilo, Franciscus Xaverius; Swibawa, I Gede; ., Indriyati; Hariri, Agus Muhammad; ., Purnomo; Hasibuan, Rosma; Wibowo, Lestari; Suharjo, Radix; Fitriana, Yuyun; Dirmawati, Suskandini Ratih; ., Solikhin; ., Sumardiyono; Rwandini, Ruruh Anjar; Sembodo, Dad Resiworo; ., Suputa
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 17, No 1 (2017): MARET, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

The White-Bellied Planthopper (Hemiptera: Delphacidae) Infesting Corn Plants in South Lampung, Indonesia. Corn plants in South Lampung were infested by newly-found delphacid planthoppers. The planthopper specimens were collected from heavily-infested corn fields in Natar area, South Lampung. We identified the specimens as the white-bellied planthopper Stenocranus pacificus Kirkaldy (Hemiptera: Delphacidae), and reported their field population abundance.

PENGARUH BEBERAPA JENIS EKSTRAK TUMBUHAN TERHADAP PENYAKIT ANTRAKNOSA PADA TANAMAN CABAI BESAR (Capsicum annuum L.) DI LAPANGAN Gusmarini, Maya; D., Suskandini Ratih; Nurdin, Muhammad; Akin, Hasriadi Mat
Jurnal Agrotek Tropika Vol 2, No 2 (2014)
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Antraknosa adalah penyakit terpenting dalam budidaya cabai besar karena menyebabkan kehilangan hasil di lapangan mencapai sekitar 75%. Penelitian ini bertujuan untuk mengetahui pengaruh ekstrak babadotan, tumbuhan siam, alang-alang, dan teki sebagai alternatif pengendalian penyakit antraknosa pada tanaman cabai yang ramah lingkungan. Penelitian ini dilaksanakan di Laboratorium Penyakit Tanaman dan Laboratorium Lapangan Terpadu Fakultas Pertanian Universitas Lampung pada bulan November 2012 sampai dengan Maret 2013. Rancangan yang digunakan dalam penelitian ini adalah Rancangan Acak Lengkap (RAL) terdiri dari 5 perlakuan dengan 5 ulangan. Setiap unit percobaan terdiri atas 2 tanaman cabai (dalam satu polibag). Perlakuan terdiri atas air steril sebagai kontrol (M0), ekstrak Ageratum conyzoides (babadotan) 100 g/100 ml air (M1), ekstrak Chromolaena odorata (tumbuhan siam) 100 g/100 ml air (M2), ekstrak Imperata cylindrica (alang-alang) 100 g/100 ml air (M3), dan ekstrak Cyperus rotundus (teki) 100 g/100 ml air (M4). Pengamatan dilakukan dengan selang waktu tujuh hari sekali. Adapun peubah yang diamati adalah keparahan penyakit pada daun, pada buah, bobot buah cabai sehat, dan bobot buah cabai sakit. Data dianalisis ragam dan dilanjutkan dengan uji Beda Nyata Terkecil (BNT) pada taraf nyata 5 %. Hasil penelitian menunjukkan bahwa (1) ekstrak A. conyzoides (babadotan), C. odorata (tumbuhan siam), I. cylindrica (alangalang), dan C. rotundus (teki) berpengaruh dalam menekan keparahan penyakit antraknosa (2) pengaruh ekstrak A. conyzoides (babadotan), C. odorata (tumbuhan siam), I. cylindrica (alang-alang), dan C. rotundus (teki) berbeda-beda namun ekstrak C. odorata (tumbuhan siam) dan C. rotundus (teki) lebih efektif dari pada A. conyzoides (babadotan), I. cylindrica (alang-alang) dalam menekan keparahan penyakit antraknosa pada daun dan buah cabai.

Kajian Kitosan Sebagai Agens Pengendali Penyakit Busuk Buah Kakao (Phytophthora megakarya L.) Septiana, Septiana; Dirmawati, Suskandini Ratih; Evizal, Rusdi
Jurnal Agro Industri Perkebunan Volume 6 No. 2, Oktober 2018
Publisher : Politeknik Negeri Lampung

Indonesia is a cocoa producing country with production of 425 thousand tons per year. However, production continues to decline, among others, caused by Phytopthora megakarya cause of fruit rot disease of cocoa, therefore it is necessary effective control of cacao fruit rot disease. This study aims to determine the effect of chitosan concentration on the growth of P. megakarya cause of fruit rot disease in vitro. The research was conducted at Plant Disease Laboratory, Department of Agrotechnology, Faculty of Agriculture, University of Lampung, from November 2012 to January 2013. V8 media research as a medium of growing P. megakarya. The workshops are arranged in a complete randomized design (CRD) consisting of (1) V8 media without chitosan (2) V8 media 0,2%, (3) V8 media 0,4%, (4) V8 media 0,6%, (5) ) V8 media 0,8% (6) medium V8 fungicided copper oxide 56%, and replicated six times. The results showed that the colonies growth of P. megakarya 6 days after incubation in V8 media 0,4%, 0,6%, 0,8% more depressed than growth on the V8 without chitosan media. Keywords: concentration, disease control, in vitro, V8 media

GENOTYPIC SELECTION ON RED CHILI PLANTS RESISTANT TO ANTHRACNOSE DISEASE AT M2 GENERATION Sa'diyah, Nyimas; Adawiah, Adawiah; Prasojo, Ibnu; Rugayah, Rugayah; Ratih Dirmawati, Suskandini
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 18, No 2 (2018): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Genotypic selection on red chili palnts resistant to anthracnose disease at m2 generation. A superior anthracnose resistant cultivar was sought to overcome the low production due to anthracnose in red chili. For the development of superior cultivars, it was necessary to select genotypes that were resistant to anthracnose. Selection effectiveness was determined by wide diversity and high reliability. The purpose of this study was to see the diversity and heritability of agronomic characters and resistance to anthracnose on chili plants, and to select genotypes that were resistant to anthracnose. This research was conducted with a design without repetition. The plant material used was the seed of the results of gamma ray mutations in generation M2. The results of this study were: the broad diversity of phenotypes found in all characters observed, while all characters of the genotype observed had broad criteria except plant height at flowering and harvest, and at seedling period. The genotype that should be planted in the next generation was genotype number 136. Genotype number 136 was very resistant to anthracnose infection.

EFFECTIVENESS OF THE APPLICATION OF ORGANIC MATTER AND TRICHODERMA VIRIDE FROM SUPPRESIVE SOIL TO CONTROL FUSARIUM WILT ON BANANA PLANT Ivayani, Ivayani; Ginting, Cipta; Yusnita, Yusnita; Dirmawati, Suskandini Ratih
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 18, No 2 (2018): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Effectiveness of the application of organic matter and Trichoderma viride from suppresive soil to control fusarium wilt on banana plant. Fusarium wilt disease caused by Fusarium oxysporum f.sp. cubense is one of the problems in banana production. This research was aimed to evaluate the effect of Trichoderma viride isolated from suppresive soil and organic matter on controlling fusarium wilt on banana plant. The efficcacy trial consisted of 12 treatments and four replications within each treatment. Each experimental unit consisted of 10 plants. Organic matters used were rice straw, cassava peel, and compost. Treatments were arranged in a randomized complete block design. Data obtained were analyzed by analysis of variance followed by orthogonal analysis (P?0.05). Application of T. viride suppressed disease incident up to 65%. The highest disease incident occurred in plants treated without T. viride and organic matter and in plants treated with organic matter only (78.33%). Disease incidence in plants treated with T.viride was lower than those treated with the combination of T. viride and organic matter. Different application times (in nursery or soil medium) did not significantly affect fusarium wilt incidence. The type of organic matter did not significantly affect the incidence and severity of fusarium wilt.

PENGARUH FUNGISIDA METALAKSIL-M TERHADAP KETERJADIAN PENYAKIT BULAI DAN PRODUKSI POPULASI JAGUNG LAGALIGO X TOM THUMB Utomo, Setyo Dwi; Islamika, Nur; Dirmawati, Suskandini Ratih; Ginting, Cipta
JURNAL AGROTROPIKA Vol 15, No 2 (2010): Agrotropika Vol.15 No.2 2010
Publisher : JURNAL AGROTROPIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (226.482 KB)

The objective of this study was to evaluate the effect of the application of Metalaksil-M on the disease incidence of downy mildew (Peronosclerospora maydis) and the yield of early-maturing corn genotype LL/TT-1. The experiment was arranged in randomized complete block design with three replications. Treatments consisted of Metalaxyll-M (300 ml in 1000 ml water) applied to the seeds (soaked for 1 minute), applied by spraying to the plants 7 days after planting, and the control. The results showed that the genotype LL/TT-1 was not resistant to downy mildew. The dry weight of ear and seeds per 12 plants harvested from plants were 70 and 72% higher than those of control respectively. The dry weight of ear and seeds per 12 plants harvested from plants sprayed with Metalaxil-M were also significantly higher than those of control.Key words: Peronosclerospora maydis, metalaxyl, seed treatment, Zea mays L.

Effects of Fruit Coatings, Fungicide, and Storage Temperature on Fruit Shelf-Life and Qualities of â€˜Californiaâ€™ Papaya Widodo, Soesiladi Esti; Dirmawati, Suskandini R.; Zulferiyenni, Zulferiyenni; Wardhana, Rachmansyah A.; Fitria, Fitria; Fitri, Annisa; Fajryah, Jeanette
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 6, No 1 (2018)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.2018.074.1-8

â€˜Californiaâ€™ papaya is a newly released papaya cultivar in Indonesia that has a very short shelf-life. Increasing demands in both local and export markets warrant the need for a proper postharvest technology to prolong its shelf-life. This research was conducted to study the effects of fruit coatings (chitosan, KD-112, plastic wrapping), fungicide Prochloraz, and storage temperatures on its fruit shelf-life and quality. Three parallel experiments were conducted with treatments arranged in a completely randomized design of a 2 x 2 x 2 factorial design.Â The first factor was chitosan (with and without 1.25% chitosan), or KD-112 (with and without 14% KD-112), or plastic wrapping (with and without one layer plastic wrapping), the second was Prochloraz (with and without 0.67 mL/L Prochloraz), and the third was storage temperature (27-28 and 16-18 ÂºC). While Prochloraz did not affect fruit variables, cooler temperature and coatings lengthened fruit shelf-life with the best effect shown by plastic wrapping which lengthened fruit shelf-life by 13 days, without affecting fruit qualities. Significant effects of coating and cooler temperature determined their combined effects, with the best effect achieved by applying the three factors that lengthened fruit shelf-life by 11-23 days longer.

Effects of Fruit Coatings, Fungicide, and Storage Temperature on Fruit Shelf-Life and Qualities of â€˜Californiaâ€™ Papaya Widodo, Soesiladi Esti; Dirmawati, Suskandini R.; Zulferiyenni, Zulferiyenni; Wardhana, Rachmansyah A.; Fitria, Fitria; Fitri, Annisa; Fajryah, Jeanette
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 6, No 1 (2018)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.2018.074.1-8

â€˜Californiaâ€™ papaya is a newly released papaya cultivar in Indonesia that has a very short shelf-life. Increasing demands in both local and export markets warrant the need for a proper postharvest technology to prolong its shelf-life. This research was conducted to study the effects of fruit coatings (chitosan, KD-112, plastic wrapping), fungicide Prochloraz, and storage temperatures on its fruit shelf-life and quality. Three parallel experiments were conducted with treatments arranged in a completely randomized design of a 2 x 2 x 2 factorial design.Â The first factor was chitosan (with and without 1.25% chitosan), or KD-112 (with and without 14% KD-112), or plastic wrapping (with and without one layer plastic wrapping), the second was Prochloraz (with and without 0.67 mL/L Prochloraz), and the third was storage temperature (27-28 and 16-18 ÂºC). While Prochloraz did not affect fruit variables, cooler temperature and coatings lengthened fruit shelf-life with the best effect shown by plastic wrapping which lengthened fruit shelf-life by 13 days, without affecting fruit qualities. Significant effects of coating and cooler temperature determined their combined effects, with the best effect achieved by applying the three factors that lengthened fruit shelf-life by 11-23 days longer.

Kajian Kitosan Sebagai Agens Pengendali Penyakit Busuk Buah Kakao (Phytophthora megakarya L.) Septiana Septiana; Suskandini Ratih Dirmawati; Rusdi Evizal
Jurnal Agro Industri Perkebunan Volume 6 No. 2, Oktober 2018
Publisher : Politeknik Negeri Lampung

Indonesia is a cocoa producing country with production of 425 thousand tons per year. However, production continues to decline, among others, caused by Phytopthora megakarya cause of fruit rot disease of cocoa, therefore it is necessary effective control of cacao fruit rot disease. This study aims to determine the effect of chitosan concentration on the growth of P. megakarya cause of fruit rot disease in vitro. The research was conducted at Plant Disease Laboratory, Department of Agrotechnology, Faculty of Agriculture, University of Lampung, from November 2012 to January 2013. V8 media research as a medium of growing P. megakarya.Â The workshops are arranged in a complete randomized design (CRD) consisting of (1) V8 media without chitosan (2) V8 media 0,2%, (3) V8 media 0,4%, (4) V8 media 0,6%, (5) ) V8 media 0,8% (6) medium V8 fungicided copper oxide 56%, and replicated six times. The results showed that the colonies growth of P. megakarya 6 days after incubation in V8 media 0,4%, 0,6%, 0,8% more depressed than growth on the V8 without chitosan media.Â Â Keywords: concentration, disease control, in vitro, V8 media

IDENTIFIKASI SURFAKTIN PADA PSEUDOMONAS FLUORESCENS ST1 PENGENDALI EFEKTIF PENYAKIT PUSTUL KEDELAI Suskandini Ratih Dirmawati .
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 9 No. 1 (2009): MARET, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Identification of surfactin in Pseudomonas fluorescens ST1 which effectively suppres soybean bacterial pustule. Identification of surfactin in Pseudomonas fluorescens ST1 filtrate was conducted in Plant Pest and Disease Laboratory, Bogor Agriculture University. The 48 hours cultured suspension of P. fluorescens ST1 with 108 CFU/ml density was centrifuged to obtain the supernatant. The supernatant was analyzed for its surfactin content by High Performance Liquid Chromatography with Colum ODS-5 and eluen acetonitril and acetat acid. The result showed that surfactin was producted by P. fluorescens ST1 and this bioactive substance could suppres the bacterial pustule on soybean.

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