Comparison of bio-efficacy of some plant extracts and new chemistry insecticides against Bemisia tabaci (Gennadius) and Water Productivity of Cotton Varieties under High Efficiency Irrigation System DOI Creative Commons

Habib- ur-Rehman,

Haseeb Ahsan,

Hafiz Usman Shakir

et al.

Journal of Global Innovations in Agricultural Sciences, Journal Year: 2023, Volume and Issue: 11(4), P. 601 - 606

Published: Dec. 22, 2023

Cotton is an important cash crop in Pakistan. But insect pests attack and emerging water scarcity glitches are alarming the yield on sustainable basis. Hence, present research trial was executed to probe out toxic effects of plant extracts some insecticides against cotton whitefly, Bemisia tabaci. Different concentrations were applied. Results showed that highest mean incidence (10.6 adults/plant) whitefly population observed case BS-15 variety, under double Lateral+30 cm P×P distance while NIAB-878, value 13.1 adults/plant. toxicity bioassays maximum reduction (79.10%) recorded pyriproxyfen comparative less (51.17%) dine furon after exposure period 72 (h.). . The values 48 24 h. In extracts, mortality (51.46%) noted A. indica whereas comparatively low (46.32%) M. oleifera extract at 30% concentration 20 10% tested relatively lower values. Data morphological growth height got increased by increasing planting from 30 40 both varieties. Number leaves boll size did not increase with variety whileincreased NIAB-878 105.1 (number leaves), 44.4 bolls) 10.2 cm2 (boll size). Crop productivity higher (0.51 kg m-3) as compared (0.49 m-3). It concluded performed better single lateral system system. Plant found than distance. Keywords: varieties, morphogical characteristics, drip irrigation, Planting geometry.

Language: Английский

Management of Bemisia tabaci on vegetable crops using entomopathogens DOI Creative Commons
Yinping Li, George N. Mbata, Alvin M. Simmons

et al.

Crop Protection, Journal Year: 2024, Volume and Issue: 180, P. 106638 - 106638

Published: March 7, 2024

Language: Английский

Citations

7
Knockdown of one cytochrome P450 gene CYP6DW4 increases the susceptibility of Bemisia tabaci to dimpropyridaz, a novel pyridazine pyrazolecarboxamide insecticide DOI
Juan Tang, Qinghe Zhang, Cheng Qu

et al.

Pesticide Biochemistry and Physiology, Journal Year: 2024, Volume and Issue: 201, P. 105888 - 105888

Published: March 26, 2024

Language: Английский

Citations

7
Determining Field Insecticide Efficacy on Whiteflies with Maximum Dose Bioassays DOI Creative Commons
Paulo S. G. Cremonez, Jermaine D. Perier, Alvin M. Simmons

et al.

Insects, Journal Year: 2023, Volume and Issue: 14(6), P. 510 - 510

Published: June 1, 2023

We conducted a rapid bioassay method to assess insecticide efficacy for controlling adult sweetpotato whitefly Bemisia tabaci in squash and cucumber crops before applications. The study aimed evaluate the accuracy of 24-hour laboratory determining maximum dose field. Ten insecticides were evaluated using leaf-dip bioassays, their effectiveness was tested across eight cucurbit field experiments Georgia, USA, during 2021 2022 seasons. dose, defined as highest labeled rate an diluted equivalent 935 L ha-1 water, used all bioassays. Adult survival observed compared count-based 24 h after treatment. A low concentration (1/10 rate) imidacloprid, flupyradifurone, pyriproxyfen, cyantraniliprole tolerance population. Overall, significant positive correlation between reported, explaining 50-91% variation. addition dosage helpful, indicating that no response consistent with susceptibility insecticide, while associated loss 2022.

Language: Английский

Citations

11
Baseline of susceptibility, risk assessment, biochemical mechanism, and fitness cost of resistance to dimpropyridaz, a novel pyridazine pyrazolecarboxamide insecticide, in Bemisia tabaci from China DOI
Juan Tang, Cheng Qu,

Qianyuan Zhan

et al.

Pesticide Biochemistry and Physiology, Journal Year: 2024, Volume and Issue: 203, P. 105987 - 105987

Published: June 14, 2024

Language: Английский

Citations

3
Enhanced efficacy of pheromone-treated entomopathogenic nematodes against whiteflies in foliar applications with a gel adjuvant DOI Creative Commons
Jermaine D. Perier, Fatma Kaplan, Stephen Hobbs

et al.

Biological Control, Journal Year: 2025, Volume and Issue: unknown, P. 105766 - 105766

Published: April 1, 2025

Language: Английский

Citations

0
Uptake and Retention of Imidacloprid and Cyantraniliprole in Cotton for the Control of Bemisia tabaci (Hemiptera: Aleyrodidae) DOI Open Access
Jermaine D. Perier, Anthony F. Lagalante,

Elizabeth P. McCarty

et al.

Journal of Entomological Science, Journal Year: 2023, Volume and Issue: 58(4)

Published: Sept. 7, 2023

Plant tissue bioassays are a standard approach for bioassaying insects such as the sweetpotato whitefly, Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae), an insect that specializes in systemic feeding on phloem leaves by using piercing-sucking mouthpart apparatus. Systemic insecticides remain most effective to whitefly management; however, little work has been done quantify amount of insecticide active ingredient species is exposed when feeding. This study was conducted estimate imidacloprid and cyantraniliprole concentrations present cotton (Gossypium hirsutum L.) 24 h after root drench toxicological bioassays. Insecticide active-ingredient quantification involved liquid chromatography–tandem mass spectrometry. Comparable concentration responses also were indicate mortality at tested concentrations. The results indicated significant retention with higher treatments, which corresponded mortality. Specifically, cyantraniliprole, average slopes intercepts log parts per billion leaf milligrams liter treatment solution y = 4.08 x + 0.83 6.22 0.47, respectively. These formulae can be linked exposure leaves, 50–73% overall variability explained. Significant correlations observed between concentrations,

Language: Английский

Citations

4
The Increased aspartate levels in transgenic cotton (Gossypium hirsutum L.) lead to improved tolerance against whitefly (Bemisia tabaci, Gennadius) DOI
Ambreen Gul, Abdul Qayyum Rao, Mukhtar Ahmed

et al.

Physiologia Plantarum, Journal Year: 2024, Volume and Issue: 176(4)

Published: July 1, 2024

The whitefly, a polyphagous insect pest feeding on nearly 1328 plant species, is major threat to global cotton production and incurs up 50% yield losses in Pakistan. We investigated whether increased aspartate phloem sap imparts whitefly toxicity protects plants from intense damage. enzymatic step for carried through aminotransferase (AAT). In this study, we constitutively overexpressed the Oryza sativa cytoplasmic AAT (OsAAT2) under CaMV35S promoter Gossypium hirsutum cv. CIM-482. Real-time PCR analysis of transcripts revealed 2.85- 31.7-fold increase mRNA levels between different lines. A substantial free-amino acid content N-assimilation transport amino acids (aspartate, glutamate, asparagine, glutamine) was seen transgenic bioassay that two lines with highest free exhibited 97 94% mortality adult population 98 96% decline subsequent nymph populations, respectively. There also significant change physiological behaviour lines, an net assimilation (A), gaseous exchange (Gs) rate transpiration (E). Improved morphological characteristics like height, total number bolls fiber were recorded gene shows promise mitigating infestations enhancing overall health plants.

Language: Английский

Citations

1
Direct and indirect effects of selective insecticides on 2 generalist predators of Bemisia tabaci (Hemiptera: Aleyrodidae) DOI Creative Commons
Albertha J. Parkins, Arash Kheirodin, Jermaine D. Perier

et al.

Journal of Insect Science, Journal Year: 2024, Volume and Issue: 24(6)

Published: Nov. 1, 2024

Abstract Generalist arthropod predators have historically contributed to the suppression of pests in many agroecosystems. The successful implementation integrated pest management (IPM) programs hinges on incorporation insecticides that are compatible with biological attributes natural enemies pests. A potentially promising pathway is improving control by through timely application selective insecticides. In our study, adult were exposed commercially available (cyantraniliprole and pyriproxyfen) using a combined laboratory field approach assess their effects survivorship predation. We isolated 2 predators, Hippodamia convergens Guérin-Méneville Geocoris punctipes (Say), estimate consumption whitefly nymphs, Bemisia tabaci (Gennadius). field, we deployed nymph-infested potted cotton plants replicated plots both insecticide treatments. enumerated nymph populations enclosed (predator-exclusion) open (predator-accessible) plants. While pyriproxyfen had negligible effect cyantraniliprole exposure directly affected H. convergence reducing duration indirectly influenced prey altering alternative prey. conditions, regardless pesticide exposure, whitefly-infested excluded more whiteflies than predator-accessible Overall, demonstrated minimal impact or while adversely mortality indirect foraging under controlled conditions but did not significant field.

Language: Английский

Citations

1
Precision and Accuracy of Field Versus Laboratory Bioassay Insecticide Efficacy for the Control of Immature Bemisia tabaci DOI Creative Commons
Paulo S. G. Cremonez, Jermaine D. Perier,

Mirela M Nagaoka

et al.

Insects, Journal Year: 2023, Volume and Issue: 14(7), P. 645 - 645

Published: July 18, 2023

Ecotoxicological studies often result in reports on the limitation and sometime failures of biological assay data to predict field response similar treatments. Nevertheless, it is widely accepted that controlled bioassays can better quantify specific mortality a target pest species toxin. To relationship between whitefly bioassay data, we evaluated laboratory concurrent cucurbit trial method assess insecticide efficacy for controlling sweetpotato whitefly, Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae). This was based oviposition nymphal development. We specifically tested assumptions maximum dose would more precisely measure as compared with comparable spray test evaluation, be equal control accuracy both adult development stages. make direct comparison, same population subsamples from 352 plots eight experiments Georgia, USA, 2021 2022. The provide significantly precision estimating proportional response. As expected, treatment-specific nonequivalence immature counts field, i.e., lack accuracy, only occurred insecticides were not highly toxic all growth stages whiteflies.

Language: Английский

Citations

2
Post-Application Field Persistence and Efficacy of Cordyceps javanica against Bemisia tabaci DOI Creative Commons
Shaohui Wu, Michael D. Toews, Robert W. Behle

et al.

Journal of Fungi, Journal Year: 2023, Volume and Issue: 9(8), P. 827 - 827

Published: Aug. 5, 2023

Previously, Cordyceps javanica Wf GA17, a causing agent of whitefly epizootics in southern Georgia, demonstrated superior temperature tolerance and higher virulence against the Bemisia tabaci than commercial strains laboratory. The post-application persistence efficacy this fungus B. were compared with that commercially available C. Apopka97 strain over two-year field study cotton vegetable crops. When blastospores both applied alone, populations not effectively suppressed. Thus, JMS stylet oil was added to fungal treatments for enhancing persistence. For 0-day samples, all caused similar but significant levels immature mortality regardless strain, propagule form (conidia vs. blastospores), application method (alone or mixed JMS). In follow-up samplings, GA17 + achieved control other some trials, did last long. alone suppressed whiteflies. Over 90% spores lost viability 24 h after treatment treatments. Across evaluation times, there no difference between two blastospores, combined JMS), conidia persisted better strains. Overall, long; therefore, improved delivery methods formulations are needed enhancement.

Language: Английский

Citations

2