Enriched bioformulations of Lecanicillium lecanii (Zimmermann) Zare and Gams against sucking pests of yard long bean, Vigna ungiculata L. Walp sesquipedalis

Nithya, P.; Rani, O. P. Reji

doi:10.5958/0974-4576.2019.00078.1

Cited by 4 publications

(6 citation statements)

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“…The pre-probing time was increased significantly leading to reduced ingestion of sap on oil coated leaves than untreated leaves. Nithya and Rani [20] developed a chitin enriched groundnut oil based formulation of Lecanicillium lecanii Zare and Gams which was equally effective in controlling A. craccivora as chlorpyriphos 0.05%. the formulation offered 98.93% and 96.74% reduction at 5 and 50% level of infestation respectively.…”

Section: Resultsmentioning

confidence: 99%

Bio Efficacy of Microbial Formulations of Beauveria bassiana and SlNPV against Spodoptera litura F. and Aphis craccivora Koch. in Vegetable Cowpea

Sankar

Faizal

2022

JSRR

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The study was conducted in the Department of Agricultural Entomology, College of Agriculture, Vellayani in 2022 with an objective to test the bio efficacy of liquid and bait formulations of Beauveria bassiana Bb 6063 and SlNPV against two most damaging pests of vegetable cowpea Spodoptera litura F. and Aphis craccivora Koch. Emulsifiable suspension (ES) formulation (comprising of Bb 6063 conidia and SlNPV @1.78 x 1010 Conidia mL-1 and 5.24 x 108 POB mL-1 respectively, in 95% sesamum oil and 5% Span- 20 + Triton-X-100 (29:71)) and bait formulation (consisting of SlNPV @4.13 x 107 POB mL-1 in, 75% wheat flour + 25% chickpea flour base matrix) developed in the current study, was evaluated under field conditions. NPV bait when applied alone and in combination with ES formulation, recorded low population of S. litura (1.33, 1.00 larvae plot-1 respectively, after two rounds of application), though inferior to chemical check Flubendiamide 39.35 SC (0 larvae plot-1). However, the leaf damage intensity score in treatments with Flubendiamide (1.53), ES formulation applied along with NPV bait (1.73) and NPV bait alone (1.57) at 10 days after two rounds of treatments were statistically on par with each other and significantly lower than rest of the treatments. Treatments with ES formulation alone and in combination with NPV bait application recorded lowest Aphis craccivora population also (0.67, 0.33 aphids plot-1) as against 9.33 aphids plot-1 in untreated control. Thus, ES formulation of Bb 6063 and SlNPV as well as SlNPV bait can be employed in the management of S. litura, wherein the former treatment is effective in controlling A. craccivora as well.

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Section: Resultsmentioning

confidence: 99%

Bio Efficacy of Microbial Formulations of Beauveria bassiana and SlNPV against Spodoptera litura F. and Aphis craccivora Koch. in Vegetable Cowpea

Sankar

Faizal

2022

JSRR

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“…These conditions enhance the fungi germination on the insect's cuticle (Arnosti et al 2019). The surfactant's capacity to keep humidity and increasing viability of conidia optimize the fungi's metabolism, influencing the production of insects' cuticledegrading enzymes (Nithya andRani 2019, Ritika et al 2019;Ferreira and Soares 2023). Nguyen et al (2015) also discovered a 25% increase in chitinase enzymes in L. lecanii from adding Tween 20, Tween-80, and Triton X-100.…”

Section: Surfactantmentioning

confidence: 99%

“…Ten days of observation suggested that three strains of L. lecanii (NIPHM, MTCC 956, and MTCC 2056) with gliserol+tween 80 adjuvant showed 73.16, 66.63 and 45.23% efficacy, respectively, higher than the control (water). Nithya and Rani (2019) reported that addition of a surfactant combination (polyethylene glycol, polyoxyethylene, glycerol, and tween-80) on three formulations (I: chitin enriched groundnut oil/CGNO + adjuvant combination/AC 1; II: -CGNO + AC 2; and III: CGNO + AC 3) are capable of improving L. lecanii biopesticide efficacy toward Bemisia tabaci, Amrasca biguttula, and Tetranychus sp. Similar studies on the surfactant addition into the oil formulation to enhance the effectiveness of entomopathogenic fungi have also been extensively reported (Oliveira et al 2018;Arnosti et al 2019;Renkema et al 2020).…”

Section: Surfactantmentioning

confidence: 99%

“…These additives act as the UV protectant for conidia (Fernandes et al 2015;Wu et al 2020), allowing e conidia for longer survivability (Kaiser et al 2018). Several surfactants have been investigated for use along with L. lecanii bio-pesticides, such as glycerol, tween-20, tween-80, carboxy methyl cellulose, chitin-enriched groundnut oil, and several other surfactants (Nithya and Rani 2019;Ritika et al 2019). None of the available studies examined the potential surfactant with active alkylaryl polyglycol ether or alkyl glycerol phthalate for supporting the L. lecanii bio-pesticide efficacy.…”

Section: Introductionmentioning

confidence: 99%

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Efficacy of bio-pesticide Lecanicillium lecanii against soybean-sucking bugs Riptortus linearis during field application

MULYATI,

ZUBAIDAH,

PRAYOGO

2023

Biodiversitas

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Abstract. Mulyati Y, Zubaidah S, Prayogo Y. 2023. Efficacy of bio-pesticide Lecanicillium lecanii against soybean-sucking bugs Riptortus linearis during field application. Biodiversitas 24: 4829-4836. This study aimed to determine the effect of application time and surfactants on the efficacy of Lecanicillium lecanii strain Probolinggo in controlling the soybean pod-sucking bug Riptortus linearis in a field test. The study was conducted in a randomized block design consisting of two treatments, namely time of application (7 am, 10 am, 1 pm, and 4 pm) and type of surfactant (alkyl glycerol phthalate and alkylaryl polyglycol ether). Application time at 4 pm showed 93% highest mortality of R. linearis than the other treatments, with the lowest number of punctures (86 punctures) and the highest soybean dry weight (11.38 g), which were not significantly different from the application time of 10 am. The efficacy of L. lecanii increased by 74.3% after adding alkylaryl polyglycol ether. The efficacy of L. lecanii with alkyl glycerol phthalate was not significantly different from the control. In the parameters of the number of seed punctures and dry weight of soybeans, the surfactant treatment gave similar results to the control. The results showed that in the field test, the highest efficacy of L. lecanii against R. linearis occurred at 4 pm with alkil aril polyglycol ether surfactant.

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“…Management of insect pests using entomopathogenic fungi (EPF) is regarded as an important alternative method for organic cultivation of vegetables (Gurulingappa et al, 2011;Saruhan et al, 2015;Ibrahim et al, 2020). Lecanicillium lecanii, is natural enemy of wide range insect pest and has been commercialized as microbial control agent for aphids (Nithya and Rani, 2019;Asi et al, 2009). The insects infected by this fungus develop white mycelial growth over insect body so this fungus is called white halo fungus.…”

mentioning

confidence: 99%

Chitinase Enzyme Activity and Pathogenicity of Lecanicillium lecanii Against Mustard Aphid Lipaphis erysimi (Kalt.)

Ritika

Joshi

Sharma

2021

ije

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Lecanicillium lecanii (Zimmerman) Zare and Gams is an entomopathogenic fungi used as an alternative biocontrol agent against crop pests. Lipaphis erysimi (Kalt.) is an important pest of Brassica family. The present study evaluates the efficacy of three Lecanicillium lecanii isolates against the nymphs of Lipaphis erysimi (Kalt.). Bioassay revealed nymphal mortality as 66.68, 62.23 and 42.50 % of L. lecanii NIPHM, L. lecanii MTCC 956 and L. lecanii MTCC 2056, respectively at maximum concentration (@12 g/ l). Extracellular enzyme activity of fungal isolates when evaluated revealed variation in the level of enzyme secretion. The maximum chitinase and n-acetyl-β-D-hexosaminidase activity (0.48 and 0.41 U/ ml) were observed in L. lecanii NIPHM on 6th day of incubation.

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Enriched bioformulations of Lecanicillium lecanii (Zimmermann) Zare and Gams against sucking pests of yard long bean, Vigna ungiculata L. Walp sesquipedalis

Cited by 4 publications

References 0 publications

Bio Efficacy of Microbial Formulations of Beauveria bassiana and SlNPV against Spodoptera litura F. and Aphis craccivora Koch. in Vegetable Cowpea

Bio Efficacy of Microbial Formulations of Beauveria bassiana and SlNPV against Spodoptera litura F. and Aphis craccivora Koch. in Vegetable Cowpea

Efficacy of bio-pesticide Lecanicillium lecanii against soybean-sucking bugs Riptortus linearis during field application

Chitinase Enzyme Activity and Pathogenicity of Lecanicillium lecanii Against Mustard Aphid Lipaphis erysimi (Kalt.)

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