scholarly journals KEEFEKTIFAN EKSTRAK DAUN SIRIH DAN DAUN BABADOTAN MENGENDALIKAN PENYAKIT ANTRAKNOSA PADA BUAH CABAI (Capsicum annum L.)

2014 ◽  
Vol 2 (3) ◽  
Author(s):  
Indah Fajar Wati ◽  
Efri Efri ◽  
Tri Maryono
Keyword(s):  
Piper Betle ◽  
Ageratum Conyzoides ◽  
Capsicum Annum ◽  
Colletotrichum Spp

Antraknosa pada cabai yang disebabkan oleh Colletotrichum spp. merupakan penyakit penting pada saat tanaman di lapangan maupun pascapanen. Daun sirih (Piper betle L.) dan babadotan (Ageratum conyzoides L.) berpotensi sebagai fungisida nabati. Tujuan penelitian ini adalah untuk mengetahui keefektifan tingkat fraksi ekstrak daun sirih dan daun babadotan hasil seleksi untuk mengendalikan penyakit antraknosa pada cabai. Percobaan disusun dalam rancangan acak kelompok (RAK) dengan delapan perlakuan dan tiga ulangan. Perlakuan terdiri atas kontrol, propineb, fraksi ekstrak daun sirih+n-Heksana 10%, 50% dan 90%, fraksi ekstrak daun babadotan+n-Heksana 10%, 50%, dan 90%. Data dianalisis dengan sidik ragam dan diuji dengan uji Duncan pada taraf nyata 5%. Hasil penelitian menunjukkan bahwa keseluruhan perlakuan fraksi ekstrakefektif menekan antraknosa. Fraksi ekstrak daun babadotan 50% dan 90% paling efektif dalam menekan penyakit antraknosa.

scholarly journals PENGARUH BERBAGAI TINGKAT FRAKSI EKSTRAK DAUN SIRIH (Piper betle L.) dan DAUN BABADOTAN (Ageratum conyzoide) TERHADAP Colletotrichum capsici PENYEBAB PENYAKIT ANTRAKNOSA PADA CABAI (Capsicum annum L.) SECARA IN VITRO

2013 ◽  
Vol 1 (3) ◽  
Author(s):  
Intan Rahayu Ningtyas ◽  
Efri Efri ◽  
Titik Nur Aeny
Keyword(s):  
Piper Betle ◽  
Ageratum Conyzoides ◽  
Capsicum Annum ◽  
Colletotrichum Capsici

Salah satu kendala untuk meningkatkan produktivitas cabai, baik dari segi kualitas maupun kuantitas adalah penyakit antraknosa, yang disebabkan oleh jamur Colletotrichum capsici. Penelitian ini bertujuan untuk mengetahui pengaruh berbagai tingkat fraksi ekstrak daun sirih (Piper betle L.) dan daun babadotan (Ageratum conyzoides) terhadap pertumbuhan C. capsici secara in vitro. Percobaan terdiri dari dua sub percobaan, masing-masing sub percobaan disusun dalam rancangan acak lengkap (RAL) dengan sebelas perlakuan dan tiga ulangan. Perlakuan sub percobaan pertama terdiri dari kontrol (PDA tanpa perlakuan ekstrak daun sirih), ekstrak daun sirih dengan pelarut aquades, ekstrak daun sirih dengan pelarut alkohol 10% (daun sirih + alkohol 10%), pelarut alkohol 50% (daun sirih + alkohol 50%), pelarut alkohol 90% (daun sirih + alkohol 90%), pelarut etil asetat 10% (daun sirih + etil asetat 10%), pelarut etil asetat 50% (daun sirih + etil asetat 50%), pelarut etil asetat 90% (daun sirih + etil asetat 90%), pelarut  n-heksana 10% (daun sirih + n-heksana 10%), pelarut n-heksana 50% (daun sirih + n-heksana 50%), dan pelarut n-heksana 90% (daun sirih + n-heksana 90%). Sub percobaan kedua adalah ekstrak daun babadotan dengan perlakuan yang sama dengan ekstrak daun sirih.  Data hasil pengamatan dianalisis menggunakan sidik ragam dan perbedaan nilai tengah antar perlakuan diuji dengan Uji Jarak Berganda (Duncan) pada taraf nyata 5%. Hasil penelitian menunjukkan bahwa perlakuan ekstrak daun sirih pada fraksi ekstrak n-heksana 50%, n-heksana 90%, n-heksana 10% dan etil asetat 90% menunjukkan pengaruh penghambatan terhadap pertumbuhan C. capsici. Pada daun sirih, fraksi ekstrak n-heksana 50%, n-heksana 90%, nheksana 10% dan etil asetat 90 dapat berpengaruh dalam menghambat pertumbuhan jumlah spora. Pada ekstrak daun babadotan, fraksi ekstrak n-heksana 10%, n-heksana 50%, n-heksana 90% dapat menghambat pertumbuhan C. capsici. Tetapi, pada jumlah spora daun babadotan, tidak berpengaruh terhadap pertumbuhan spora.

scholarly journals IDENTIFICATION OF ANTHRACHNOSE DISEASE ON STRAWBERRY FRUIT (Fragraria vesca L.) AND ITS CONTROL BY BETEL (Piper betle L.) LEAF EXTRACT

2015 ◽  
Vol 2 (1) ◽  
pp. 458
Author(s):  
Rina Sri Kasiamdari ◽  
Umi Sangadah
Keyword(s):  
Disease Severity ◽  
Leaf Extract ◽  
Piper Betle ◽  
Strawberry Fruit ◽  
Pathogen Infection ◽  
Anthracnose Disease ◽  
Betel Leaf ◽  
Colletotrichum Spp

<p>In Indonesia, strawberry is one of fruits which has high economic values. The growth of strawberry has increased significantly, but its productivity is still low because of disease attack. Disease that attacks strawberry started from nursery to post harvest is anthracnose that can be caused by Colletotrichum spp. Control efforts of anthracnose disease up to now has been done with application of synthetic chemicals which are known to be hazardous to the environment and human health. Betel leaf (Piper betle L.) is natural plant that potentially used as phytofungicide. Essential oils on betel leaf extract is reported can decrease the growth of pathogenic fungi. The objectives of the research were to identify Colletotrichum spp. in strawberry fruit that showed anthracnose symptoms, to test the potency of betel leaf extract as phytofungicide, and to evaluate the effect of betel leaf extract in inhibiting infection and disease severity of Colletotrichum in strawberry. Samples were taken from strawberry nursery in Magelang, Indonesia. The disease symptoms were isolated on Potato Dextrose Agar, followed by identification of fungal colony and morphology by semi permanent slide preparation. Betel leaves were extracted with water to get a concentration of 20, 40, 60, 80 and 100%, respectively. An in vitro experiment was done to evaluate the inhibition rate of betel leaf extract to the growth of Colletotrichum spp. colony. An in vivo experiment was done by submersion of strawberry to betel leaf extract before (preventive method) and after antrachnose attack (curative method), then disease infection and disease severity were measured after 7 days. The result of the research showed that anthracnose disease in strawberry was caused by C. gloeosporioides (Penz.). Twenty percent of betel leaf extract in an in vitro test had potential as phytofungicide and concentration of 100% betel leaf extract was the best concentration to inhibit the growth of C. gloeosporioides (Penz.) colony by 70.26±0,61%. In an in vivo experiment, submersion of strawberry before pathogen infection (preventive) with 100% betel leaf extract decreased disease infection by 40% and disease severity by 16%, respectively. While treatment of submersion of strawberry after pathogen infection (curative) decreased disease infection by 33,4% and disease severity by 17%. </p><p>Keywords: strawberry, anthrachnose, disease, betel leaf</p>

scholarly journals Antioxidant activity of some natural essential oils in Vietnam: Comparison between QSAR simulation and experimental study

2020 ◽  
Vol 129 (1D) ◽  
Author(s):  
Tran Thi Ai My ◽  
Le Trung Hieu ◽  
Nguyen Thi Thanh Hai ◽  
Ton Nu My Phuong ◽  
Huynh Thi Phuong Loan ◽  
...  
Keyword(s):  
Essential Oils ◽  
Antioxidant Activities ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Qsar Model ◽  
Piper Betle ◽  
Scavenging Activity ◽  
Dpph Radical ◽  
Ageratum Conyzoides ◽  
Dpph Radical Scavenging

Antioxidant activities of essential oils from leaves of Piper betle L. (T) and Cleistocalyx operculatus L. (V), and aerial parts of Ageratum conyzoides L. (H) natively grown in Thua Thien Hue province of Vietnam were investigated.Quantitative structure–activity relationship (QSAR) model was constructed from the 27 compounds including 4-hydroxy-chromene-2H-one and its derivatives. DPPH (1,1-diphenyl-2-picrylhydrazyl) radical scavenging activity was applied to estimate the antioxidant property of these essential oils through IC50 (mg/mL) values. QSAR model is used to predict the radical scavenging activity IC50 mg/mL of T, V, and H. The results indicate that there is a good agreement between the experimental data and the predicted values using the QSAR model. The three essential oils display the DPPH radical scavenging activities with the IC50 values being in the order of T > H > V of 3.71 mg/mL,596.44 mg/mL and 637.03 mg/mL, respectively. The essential oil of T exhibits the strong DPPH radical scavenging activity that is close to the reference compound ascorbic acid (IC50 value of 3.03 mg /mL).

scholarly journals Allelopathy and allelochemical quantitative analysis in Pinto peanut (Arachis pintoi)

2021 ◽  
Vol 63 (12) ◽  
pp. 41-46
Author(s):  
Khanh Linh Phan ◽  
◽  
Ngoc Hai Trieu Phong ◽  
Le Van Nguyen ◽  
Le Thi Ho ◽  
...  
Keyword(s):  
Coumaric Acid ◽  
Ageratum Conyzoides ◽  
Bidens Pilosa ◽  
Arachis Pintoi ◽  
Capsicum Annum ◽  
Liquid Liquid Extraction ◽  
Stem Extract ◽  
Perennial Legume ◽  
Soil Fertility Improvement ◽  
Different Parts

Pinto peanut (Arachis pintoi) considered as a perennial legume animal fed plant with good soil fertility improvement was uesed for its allelopathy that had been reported on the germination of Ageratum conyzoides L, Comnyza canadensis L. Cronq., Bidens pilosa L., Solanum lycopersicum and Capsicum annum. through the solutions extracted from different parts of pinto peanut on mustard greens (Brassica juncea), barnyardgrass (Echinochloa crus-galli) and junglerice (Echinochloa colonum). Consideration of the growth of hypocotyls and rootlets at 48 hours after incubation with pinto peanut extracts, results showed that 1.0 g/ml of the methanolic pinto peanut stem extract greatly inhibited 100% mustard greens growth, 77.7% and 93.5% the hypocotyls and rootlets growth of barnyardgrass, 57.2% and 92.7% the hypocotyls and rootlets growth of junglerice, respectively. The allelopathic activity after liquid-liquid extraction of the ethyl acetate phase greater than the aqueous phase. Allelopathic extract loading from C18 chromatographic column was purified by HPLC to obtain 6 phenolic compounds with the contents in 1 g fresh pinto peanut weight were 0.214 μg (cinamic acid), 0.8344 μg (caffeic acid), 7.7676 μg (coumaric acid), 2.2354 μg (ferullic acid), 0.045 μg (2-4 dimehydroxy benzoic) and 32.1162 μg (salicylic acid). These results should be accordingly considered in the production of biological herbicides.

scholarly journals UJI KEEFEKTIFAN EKSTRAK DAUN JARAK DAN DAUN NIMBA TERHADAP INTENSITAS PENYAKIT ANTRAKNOSA PADA TANAMAN CABAI (Capsicum annum L.)

2014 ◽  
Vol 2 (3) ◽  
Author(s):  
Tivanny Sherrin Wanda ◽  
Efri Efri ◽  
Titik Nur Aeny ◽  
Hasriadi Mat Akin
Keyword(s):  
Capsicum Annum ◽  
Colletotrichum Spp

Penyakit antraknosa yang disebabkan oleh Colletotrichum spp. merupakan salah satu kendala dalam usaha budidaya cabai. Kerugian akibat penyakit ini di lapangan dapat mencapai 65%. Salah satu alternatif pengendalian penyakit ini yaitu menggunakan fungisida nabati. Tanaman jarak dan nimba merupakan tanaman yang berpotensi sebagai fungisida nabati. Tanaman jarak dan nimba memiliki senyawa-senyawa aktif yang dapat membunuh jamur dan tidak toksik terhadap manusiadan hewan. Penelitian bertujuan untuk menguji keefektifan ekstrak daun jarak dan daun nimba terhadap intensitas penyakit antraknosa pada tanaman cabai (Capsicum annum L.). Penelitian dilaksanakan di Laboratorium Lapang Terpadu Fakultas Pertanian Universitas Lampung pada bulan Juni sampai September 2013. Penelitian disusun dengan menggunakan Rancangan Acak Kelompok (RAK) dengan 5 perlakuan dan 5 ulangan sehingga didapatkan 25 satuan percobaan, setiap satuan percobaan terdiri dari 2 tanaman cabai. Lima perlakuan tersebut adalah kontrol (F 0 ), ekstrak daun jarak fraksi alkohol 10% (F 1 ), ekstrak daun jarak fraksi Etil asetat 10% (F 2 ), ekstrak daun nimba fraksi alkohol 90% (F 3 ) dan perlakuan fungisida pembanding (F 4 ). Data yang diperoleh kemudian dianalisis menggunakan sidik ragam yang dilanjutkan dengan uji BNT pada taraf nyata 5%. Hasil penelitian menunjukkan bahwa ekstrak daun jarak fraksi alkohol 10%, ekstrak daun jarak fraksi etil asetat 10% dan ekstrak daun nimba fraksi alkohol 90% dapat menekan intensitas penyakit antraknosa pada tanaman cabai, ekstrak daun jarak fraksi alkohol 10% dan fraksi etil asetat 10% lebih baik dalam menekan intensitas penyakit antraknosa pada cabai dibandingkan dengan ekstrak daun nimba fraski alkohol 90% dan fungisida sintetik, dan kemampuan ekstrak daun nimba fraksi alkohol 90% tidak berbeda dengan kemampuan dari fungisida sintetik dalam menekan intensitas penyakit antraknosa pada tanaman cabai.

UJI PESTISIDA NABATI TERHADAP HAMA DAN PENYAKIT TANAMAN

2016 ◽  
Vol 6 (2) ◽  
pp. 39
Author(s):  
MOKHAMAD IRFAN
Keyword(s):  
Allium Sativum ◽  
Crop Productivity ◽  
Plant Diseases ◽  
Piper Betle ◽  
Ageratum Conyzoides ◽  
And Control ◽  
Chemical Pesticides

The Loss of crop productivity can reach 30-35% if not use pesticide. The other hand, to use of pesticides can be caused environmental problems and human healthy. This research aims to develop biopesticides for pests and plant diseases. It was conducted at the PEM laboratory UIN Suska Riau and on land, from July to November 2015. The sourches were extracts from Andropogon nardus, Annona muricata leaves, Ageratum conyzoides, Piper aduncun fructus, Nicotiana tabacum leaves, Tinospora crispa, Azadirachta indica leaves, Allium sativum and Piper betle leaves. Each the source was macerated in alcohol 50% for 24 hours and then distilled at a temperature of 60 °C until all the alcohol evaporates. The experimental Design was complete random design with 7 treatments (control, 20%, 40%, 60%, 80%, 100% and chemical pesticides as positif control) and 3 replicates. Parameters of the test biopesticides to disease performed in vitro with measure the resistance zones and for mealybugs and Gryllus assimilis in vivo with the pest mortality. Biopesticide test in vitro for the bacteria that causes carrot root rot has not been able to kill microbes. The mortality rate mealybugs begins before 1 hour observation at the treatment biopesticide concentration of 80%, 100% and control positif.  Provision of different concentrations of biopesticides, does not the increased mortality of Gryllus assimilis. This shows that the power to kill biopesticide still well below chemical pesticides, but the pest is still alive no appetite as antifeedant effect of the biopesticide. So biopesticide application does not have to kill the target pest. Need  follow-up and development of this research and other pests.

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