scholarly journals Potential of Beauveria bassiana Lowland Isolates against Spodoptera litura in Tobacco Plant

2018 ◽  
Vol 207 ◽  
pp. 012001
Author(s):  
D N Erawati ◽  
I Wardati ◽  
S Humaida
Keyword(s):  
Beauveria Bassiana ◽  
Spodoptera Litura ◽  
Tobacco Plant

scholarly journals Effect of the native strain of the predator Nesidiocoris tenuis Reuter and the entomopathogenic fungi Beauveria bassiana and Lecanicillium muscarium against Bemisia tabaci (Genn.) under greenhouse conditions in Tunisia

2021 ◽  
Vol 31 (1) ◽  
Author(s):  
Besma Hamrouni Assadi ◽  
Sabrine Chouikhi ◽  
Refki Ettaib ◽  
Naima Boughalleb M’hamdi ◽  
Mohamed Sadok Belkadhi
Keyword(s):  
Beauveria Bassiana ◽  
Bemisia Tabaci ◽  
Entomopathogenic Fungi ◽  
Tobacco Plant ◽  
Economic Losses ◽  
Native Strain ◽  
Lecanicillium Muscarium ◽  
Southern Tunisia ◽  
Significant Efficacy ◽  
Nesidiocoris Tenuis

Abstract Background The misuse of chemical insecticides has developed the phenomenon of habituation in the whitefly Bemisia tabaci (Gennadius) causing enormous economic losses under geothermal greenhouses in southern Tunisia. Results In order to develop means of biological control appropriate to the conditions of southern Tunisia, the efficacy of the native strain of the predator Nesidiocoris tenuis Reuter (Hemiptera: Miridae) and two entomopathogenic fungi (EPF) Beauveria bassiana and Lecanicillium muscarium was tested against Bemisia tabaci (Gennadius). Indeed, the introduction of N. tenuis in doses of 1, 2, 3, or 4 nymphs per tobacco plant infested by the whitefly led to highly significant reduction in the population of B. tabaci, than the control devoid of predator. The efficacy of N. tenuis was very high against nymphs and adults of B. tabaci at all doses per plant with a rate of 98%. Likewise, B. bassiana and L. muscarium, compared to an untreated control, showed a very significant efficacy against larvae and adults of B. tabaci. In addition, the number of live nymphs of N. tenuis treated directly or introduced on nymphs of B. tabaci treated with the EPF remained relatively high, exceeding 24.8 nymphs per cage compared to the control (28.6). Conclusions It can be concluded that the native strain of N. tenuis and the EPF tested separately were effective against B. tabaci. Their combined use appears to be possible.

scholarly journals PEMANFAATAN EKSTRAK DAUN TEMBAKAU (Nicotiana tabacum L) UNTUK MENGENDALIKAN ULAT GRAYAK (Spodoptera litura F) PADA TANAMAN SAWI (Brassica juncea L.) DI LAPANG

AGRICA ◽  
2019 ◽  
Vol 1 (2) ◽  
pp. 1-8
Author(s):  
Maria Goreti Firma
Keyword(s):  
Spodoptera Litura ◽  
Leaf Extract ◽  
Tobacco Plant ◽  
Block Design ◽  
Fresh Weight ◽  
Leaf Extracts ◽  
Tobacco Leaf ◽  
Randomized Block Design ◽  
Nicotiana Tabacum L ◽  
Mustard Plant

This study aims to determine the effect of tobacco plant extracts on mortality of armyworm pests (Spodoptera litura F.) and determine the optimum concentration of tobacco leaf extracts on mortality of armyworm caterpillars on mustard plants in the field. The design used in this study was a Randomized Block Design (RBD) consisting of 5 treatments and 4 replications namely T1: 175 ml/L concentration of tobacco leaf extract, T2: 350 ml/L concentration of tobacco leaf extract T3: Concentration of 525 ml/L tobacco leaf extract, T4: Concentration of 700 ml/L tobacco leaf extract, T5: Concentration of 875 ml/L of tobacco leaf extract. The observation variables in this study were pest mortality (%), damage intensity (%), plant fresh weight, and fresh weight per hectare (ton). The results showed that the concentration of tobacco leaf extracts significantly affected the mortality of Spodoptera litura F. At the concentration of T5 treatment (875 ml) were the lowest damage, pest mortality, fresh weight of the mustard plant, and fresh weight per hectare of was 9.75%, 88%, 109.25 gr, and27.31 tons respectively.

scholarly journals Karakterisasi Fisiologi Beberapa Isolat Cendawan Entomopatogen Beauveria bassiana Dan Virulensinya Terhadap Spodoptera litura

2017 ◽  
Vol 1 (1) ◽  
pp. 10
Author(s):  
Trizelia Trizelia ◽  
Novri Nelly
Keyword(s):  
Beauveria Bassiana ◽  
Spodoptera Litura ◽  
Hypothenemus Hampei ◽  
Leptocorisa Oratorius

Penelitian ini bertujuan untuk mempelajari karakter fisiologi isolat B. bassiana yang berasal dari berbagai inang dan virulensinya terhadap Spodoptera litura. Lima isolat B. bassiana yang diuji diisolasi dari hama Leptocorisa oratorius (F.) dan Hypothenemus hampei (Ferr.), rizosfer tanaman bawang daun buah kakao dan batang gandum. Karakter fisiologi yang diamati adalah daya kecambah konidia, pertumbuhan koloni, dan sporulasi, Cendawan diperbanyak pada media SDAY dan uji virulensi dilakukan terhadap larva instar II S. litura. Hasil penelitian menunjukkan bahwa daya kecambah konidia, pertumbuhan koloni dan sporulasi bervariasi antar isolat. Isolat B. bassiana yang diisolasi dari L. oratorius dan buah kakao memiliki karakter fisiologi yang lebih baik dibandingkan dengan isolat lain. Kedua isolat ini juga lebih virulen terhadap larva instar II S. litura dengan mortalitas sebesar 80 – 81,67%.

scholarly journals Spodoptera litura Fabr. Control Using Beauveria bassiana to Reduce Pest Damage Intensity and Maintain the Yield of Soybean

2021 ◽  
Vol 830 (1) ◽  
pp. 012069
Author(s):  
Yati Setiati Rachmawati ◽  
Dina Gustiana ◽  
Ayu Rosmiati ◽  
Cecep Hidayat ◽  
Efrin Firmansyah
Keyword(s):  
Beauveria Bassiana ◽  
Spodoptera Litura ◽  
Pest Damage

scholarly journals Biology of Armyworm, Spodoptera litura and Effect of Beauveria bassiana against Third Instar Larvae Under Laboratory

2021 ◽  
Vol 14 (4) ◽  
pp. 103-108
Author(s):  
Zohaib Afzal ◽  
Ahmad Abdul wahab ◽  
Muhammad Arshad ◽  
Usama Bin Tayyab ◽  
Muhammad Yousuf ◽  
...  
Keyword(s):  
Beauveria Bassiana ◽  
Spodoptera Litura ◽  
Third Instar Larvae

scholarly journals Insecticidal activity of culture filtrates from liquid medium of Beauveria bassiana isolates from South Sumatra (Indonesia) wetland soil against larvae of Spodoptera litura

2019 ◽  
Vol 20 (8) ◽  
Author(s):  
DWI RIZKI AYUDYA ◽  
Siti Herlinda ◽  
SUWANDI SUWANDI
Keyword(s):  
Liquid Medium ◽  
Beauveria Bassiana ◽  
Culture Filtrate ◽  
Insecticidal Activity ◽  
Spodoptera Litura ◽  
Wetland Soil ◽  
Liquid Media ◽  
Toxic Activity ◽  
Culture Filtrates ◽  
Beauveria Bassiana Isolates

Abstract. Ayudya DR, Herlinda S, Suwandi S. 2019. Insecticidal activity of culture filtrates from liquid medium of Beauveria bassiana isolates from South Sumatra (Indonesia) wetland soil against larvae of Spodoptera litura. Biodiversitas 20: 2101-2109. The obstacle in utilizing entomopathogenic fungi to control pest insects in wetlands is the inability of their isolates to survive during the saprophytic phase due to the soil being very acidic. Therefore, the exploration of fungi being able to survive in the acidic soil was utilized in the acidic ecosystem. This study aimed to test the toxic activity of Beauveria bassiana culture filtrates from liquid medium at pH 2.5 and 6 against Spodoptera litura larvae. Total of ten isolates collected from South Sumatra, Indonesia was grown in liquid media at pH of 2.5 and 6 for six weeks. The result showed that the culture filtrate from liquid medium at pH 6 was more toxic against the larvae than that at pH 2.5. The mortality of the larvae at pH 6 reached 92%, while that at pH 2.5 it reached 13.33% only. The findings of present study revealed that the culture filtrate isolates of BPdR, BJgTs, BSwTd2, BSwTd3, BSwTd4, BKKPp2 from pH 2.5 media still caused high larvae mortality (6.67-13.33%). These seven isolates are superior due to their toxic nature at pH 2.5. Consequently, present study has increased the chances of success in utilizing these isolates for biological control in acidic ecosystems, such as peatlands, tidal lowlands, and freshwater swamps.

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