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Suskandini Ratih Dirmawati
Jurusan Agroteknologi Fakultas Pertanian Universitas Lampung
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT

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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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (427.494 KB) | DOI: 10.23960/j.hptt.11796-103

Abstract

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.
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (0.036 KB) | DOI: 10.25181/jaip.v6i2.977

Abstract

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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (277.843 KB) | DOI: 10.23960/j.hptt.218151-159

Abstract

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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (169.383 KB) | DOI: 10.23960/j.hptt.218119-126

Abstract

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)

Abstract

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 ‘California’ 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

Abstract

‘California’ 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.  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 ºC). 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 ‘California’ 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

Abstract

‘California’ 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.  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 ºC). 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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (0.036 KB) | DOI: 10.25181/jaip.v6i2.977

Abstract

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
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (107.696 KB) | DOI: 10.23960/j.hptt.1954-57

Abstract

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.
SISTEM PAKAR UNTUK MENDIAGNOSIS PENYAKIT TANAMAN KUBIS DENGAN METODE FORWARD CHAINING Irwan Adi Pribadi; Suskandini Ratih Dirmawati; Febi Eka Febriansyah; Novenda Novenda
Jurnal Pepadun Vol. 1 No. 1 (2020): December
Publisher : Department of Computer Science, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (789.869 KB) | DOI: 10.23960/pepadun.v1i1.4

Abstract

Vegetables are essential food for Indonesian people in their daily lives. One of them is the cabbage plant. Cabbage is one type of vegetable that is widely consumed because it contains sources of vitamins A, B, C, minerals, carbohydrates, and proteins beneficial for health. Cabbage has perishable properties, seasonal production, and can not be stored for long. Cabbage leaves are soft, and the water content is quite a lot, thus easily penetrated by agricultural tools as well as pests and pathogens. Cited from the data of the Central Statistics Agency, cabbage production in 2017 in Indonesia reached 1.44 million tons from the previous year. One factor that causes this is cabbage plant disease. One factor that causes this is cabbage plant disease. The lack of disease control information and the limited number of experts causes these problems to be resolved to the maximum. Therefore in this study, an expert system that could diagnose cabbage plant diseases based on knowledge obtained from the expert directly was built. The expert system is built based on the web using the PHP programming language and MySQL database. The inference method used is the Forward Chaining, which can diagnose the disease by adjusting the facts experienced with the rules that have been declared. This study processed 7 diseases and 24 data symptoms. Test results show that: (1) Functional testing using the Black Box Equivalence Partitioning (EP) method gets the results as expected in the test scenarios in each test class. (2) Expertise testing by comparing the results of expert diagnoses, and the system is appropriate and running well. (3) External testing using a questionnaire involving 20 respondents from the faculty of agriculture shows that the system built has a total percentage value of an average of 83% with the category "Very Good".
Co-Authors A.A. Ketut Agung Cahyawan W adawiah adawiah, adawiah Adi Setiawan Agus Karyanto Agus Karyanto Agus M Hariri Agus Muhammad Hariri Agus Muhammad Hariri, Agus Muhammad Agus Pranyata Ali, Mufty Anak Agung Gede Sugianthara Andi Irwansyah Andi Setiadi Anise Wulandari Annisa Fitri, Annisa Annisa Lesmana Ari Saputra Cipta Ginting Cipta Ginting Cipta Ginting Ginting Cipta Ginting, Cipta Dad Resiworo Jekti Sembodo Dad Resiworo Sembodo, Dad Resiworo Deciana Deciana Denny Marini Sihite Dermiyati Dermiyati Dermiyati, Dermiyati Dini Aprilia Dini, Aci Prima Efri Efri Efri Efri Erni Aslinda Fajryah, Jeanette Febi Eka Febriansyah Fembriarti Erry Prasmatiwi Fitria Fitria Franciscus Xaverius Susilo, Franciscus Xaverius Galih Prasetyo Geraldo Sandy Hardy Muhammad Ridwan Hasriadi Mat Akin I GEDE SWIBAWA, I GEDE Indah Puspita Dewi Indriyati . Irwan Adi Pribadi Islamika, Nur Ivayani Ivayani Ivayani Ivayani Ivayani Ivayani Ivayani Ivayani Ivayani, Ivayani Jayanti, Watini Hefri Joko Prasetyo Kristina Hayu Herwidyarti Kus Hendarto Kushendarto Kushendarto Lambang Kawilarang Lestari Wibowo Lestari Wibowo Lestari Wibowo Mareli Telaumbanua Maya Gusmarini Maya Gustina Muhammad Imam Suryadi Muhammad Nurdin Muhammad Nurdin Muhammad Nurdin Muhammad Nurdin Muhammad Nurdin Muhammad Nurdin Novenda Novenda Nyimas Sadiyah Oryza Wahyu Setiawan Prasojo, Ibnu Pratiwi Iswari Purnomo Purnomo Purnomo Purnomo Radix Suharjo Radix Suharjo Radix Suharjo Ramasta Nesya Elvara Reny Destya Angrum Reza Baharsyah Reza Putri Ristya Irma Wardhani Rosma Hasibuan, Rosma Rudianto Butarbutar Rugayah Rugayah Ruruh Anjar Rwandini, Ruruh Anjar Rusdi Evizal Sa'diyah, Nyimas Sadiyah, Nyimas Saraswati, Kadek Dwi Sari, Ni Nengah Yulyani Purnami Selvi Anasari Selviani, Zakiah Septiana Septiana SEPTIANA SEPTIANA Septiana Septiana Septiana, Liska Mutiara Setyo Dwi Utomo Setyo Widagdo Setyo Widagdo Solikhin ., Solikhin Solikhin Solikhin Solikhin Solikhin Sri Yusnaini Sri Yusnaini Sudi Pramono Sudiono Sudiono Sugiatno Sugiatno Sugiatno Sugiatno Suputa Suputa Titik Nur Aeny Titik Nur Aeny Titik Nur Aeny Tri Maryono Wahyudi Wahyudi Wardhana, Rachmansyah A. Wati, Tri Agus Setiya Widodo, Soesiladi Esti Yohan Yogaswara Yohannes C Ginting Yohannes Cahya Ginting Yuktika Yuktika Yulida Sarif Hidayat Yunita Fitri Astuti YUSNITA YUSNITA Yuyun Fitriana Zulferiyenni, Zulferiyenni