Evaluation of an Ipm Module Against the Leafhopper, Amrasca Devastans (Distant) in Cotton

Murugesan, N.; Kavitha, A.

doi:10.57182/jbiopestic.1.1.98-100

Cited by 9 publications

(8 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is in agreement with the findings of Sathish and Raguraman (2007) who reported that activity of these defense related enzymes were negatively correlated to Helicoverpa armigera infestation in tomato. Murugesan and Kavitha (2009) reported the effectiveness of P. fluorescens against leafhopper, Amrasca devastans (Distant) in cotton through induced resistance. These results suggest that induction of defense enzymes involved in phenylpropanoid pathway and accumulation of phenolics might have contributed to induced resistance against T. tabaci.…”

Section: Resultsmentioning

confidence: 99%

Management of Thrips Tabaci Lindeman in Onion Using Pseudomonas Fluorescens Migula Through Induced Resistance

Bandi,

Sivasubramanian

2011

JBiopest

View full text Add to dashboard Cite

Among the various biocontrol agents, Pseudomonas fluorescens Migula, a strain of Plant Growth Promoting Rhizobacteria (PGPR) is being exploited commercially for plant protection to induce systemic resistance against various insect pests and diseases. The foliar application of P. fluorescens has been reported to enhance the activity of defense related enzymes viz., Peroxidase (POD), Polyphenoloxidase (PPO) and Phenylalanine Ammonia-lyase (PAL) in the plant system. The experiment was conducted to know the effect of induced resistance in onion through foliar application of P. fluorescens on onion thrips, Thrips tabaci. Onion thrips is the major insect pest of onion and it is identified as a pest of national importance which causes an annual yield loss of about 10 to 15 per cent in India. The results indicated that the highest activity of POD (0.70 mg protein/min), PPO (0.54 mg protein/min) and Phenylalanine Ammonia-lyase (0.30 mg/100 mg) was recorded in P. fluorescens treated onion plants. The activity of these enzymes was negatively correlated with thrips population. The minimum activity of all three enzymes was observed from untreated check. These enzymes involved in the production of phytoalexins and phenolics in onion plant and thus, the induced resistance played an important role in the management of Thrips tabaci.

show abstract

Section: Resultsmentioning

confidence: 99%

Management of Thrips Tabaci Lindeman in Onion Using Pseudomonas Fluorescens Migula Through Induced Resistance

Bandi,

Sivasubramanian

2011

JBiopest

View full text Add to dashboard Cite

show abstract

“…The greater decrease in chlorophyll content may be due to thrips feeding, which siphon off plant contents and consume mesophyll cells which eventually result in loss of chlorophyll and reduced photosynthetic efficiency (Boateng et al, 2014 ). There are reports that the insect pest infestation leads to decrease in chlorophyll content (Murugesan and Kavitha, 2010 ; Singh et al, 2022 ). Many studies demonstrated that the concentration of chlorophyll in plants decrease with infection of pathogen (Akbar et al, 2023 ; Smith et al, 2023 ; Sobhy et al, 2023 ).…”

Section: Discussionmentioning

confidence: 99%

Unravelling the synergistic interaction of Thrips tabaci and newly recorded, Thrips parvispinus with Alternaria porri (Ellis.) Cif., inciting onion purple blotch

Saini,

Raj,

Saini

et al. 2024

Front. Microbiol.

View full text Add to dashboard Cite

Onion purple blotch is the most indispensable foliar disease of crop and has become a major concern for farmers and research fraternity. An attempt to investigate the role of injury in parasitism by Alternaria porri indicated that disease incidence and severity enhance considerably with injury. Thrips injured plants inoculated with A. porri presented 100% incidence and 52–72% severity while mechanically injured plants inoculated with A. porri showed 60–70% incidence and 28–34% severity. The uninjured plants showed considerably less disease incidence (30–40%) and severity (10–16%). Injured inoculated plants presented reduced leaf length and leaf area while the leaf diameter remained unaffected. The lesion number, lesion length and size was substantially enhanced with concomitant infestation of pest and pathogen. Thrips tabaci injury led to more pronounced symptoms of purple blotch compared to Thrips parvispinus injury. There was substantial decrease in photosynthetic rate and chlorophyll content with stress imposed on plant whilst the relative stress injury was enhanced. The induction of injury and inoculation of A. porri had an impact on the concentration of total phenolics, total soluble sugars, total proteins and hydrogen peroxide in onion leaves. A. porri combined with injury caused a more pronounced decrease in total soluble sugars and total protein content while enhancement in total phenolics and hydrogen peroxide content compared to uninjured plants. The dynamic nature of morpho-physiological and biochemical changes owing to stress conditions imposed on onion plant adds an extra layer of complexity in understanding the onion plant physiology and their ability to work out in response to challenging environment conditions.

show abstract

“…The combination of bio agents had the population of 2.00/leaf whereas in check it was 2.20/leaf. Murugesan and Kavitha (2009) reported that imidacloprid recorded the least mean population of leafhoppers in cotton. The entomopathogenic fungi, V. lecanii, H. thompsonii and B. bassiana were found to be the promising virulent isolates for cowpea aphids.…”

Section: Sucking Pest Populationmentioning

confidence: 99%

Effect of Bioinoculants on Sucking Pests and Pod Borer Complex in Urdbean

Soundararajan,

Chitra

2011

JBiopest

View full text Add to dashboard Cite

Pulse crops are damaged by an array of pest complex and yield reduction due to insect pests is one of the major constraints for low productivity. Use of microbial bioinoculants can substitute the conventional pesticide use in short duration crops like urdbean, mungbean and cowpea. In the present study, the bioinoculants such as Beauveria bassiana and Pseudomonasfluorescens talc formulations (10g/kg seed & 2ml/lit) were tested against whitefly Bemisia tabaci, leaf hopper Empoasca kerri, legume pod borer Maruca vitrata and flea beetle Madurasia obscurella. The damage by M.vitrata, gram pod borer Helicoverpa armigera, blue butterfly Lampides boeticus and pod bugs was also recorded. The results of two year experiments revealed that significant effect was observed in the bioinoculants applied plots on the sucking insects and pod borer complex. The P. fluorescens seed treated plots had lower whitefly population compared to B.bassiana treated plots and untreated check. The foliar application of B.bassiana showed good results on the pod borer complex. The damage by M. vitrata, H. armigera, L. boeticus was low in the harvested pods as against the untreated control. The damage by pod bugs was also low in the B.bassiana applied plants. The yield in different treatments was recorded and the highest yield was recorded in chemical treated plots followed by bioinoculants treated plots.

show abstract

Evaluation of an Ipm Module Against the Leafhopper, Amrasca Devastans (Distant) in Cotton

Cited by 9 publications

References 0 publications

Management of Thrips Tabaci Lindeman in Onion Using Pseudomonas Fluorescens Migula Through Induced Resistance

Management of Thrips Tabaci Lindeman in Onion Using Pseudomonas Fluorescens Migula Through Induced Resistance

Unravelling the synergistic interaction of Thrips tabaci and newly recorded, Thrips parvispinus with Alternaria porri (Ellis.) Cif., inciting onion purple blotch

Effect of Bioinoculants on Sucking Pests and Pod Borer Complex in Urdbean

Contact Info

Product

Resources

About