Efficacy of three biopesticides against cotton pests under field conditions in South Africa

Malinga, Lawrence; Laing, Mark

doi:10.1016/j.cropro.2021.105578

Cited by 18 publications

(13 citation statements)

References 42 publications

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“…Some important microalgae have been exploited for their beneficial biopesticide activity in the cultivation of spices [43]. The use of chemical insecticides can result in numerous undesirable effects, including (i) killing of beneficial and nontargeted organisms and sometimes resurgence; (ii) rapid multiplication of secondary pests; (iii) development of pesticide resistance; (iv) contamination of the environment/ecosystem; (v) accumulation of pesticide residues in food materials; (vi) causing imbalanced ecological processes, such as pollination (pollinators affected by pesticides) and harm to living beings; (vii) carcinogenic and teratogenic effects in nature; and (viii) causing imbalances in hormone systems [8,[73][74][75].…”

Section: Biopesticides From Algal and Cyanobacterial Sourcesmentioning

confidence: 99%

An Overview of Some Biopesticides and Their Importance in Plant Protection for Commercial Acceptance

Kumar

Ramlal

Mallick

et al. 2021

Plants

255

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Biopesticides are natural, biologically occurring compounds that are used to control various agricultural pests infesting plants in forests, gardens, farmlands, etc. There are different types of biopesticides that have been developed from various sources. This paper underscores the utility of biocontrol agents composed of microorganisms including bacteria, cyanobacteria, and microalgae, plant-based compounds, and recently applied RNAi-based technology. These techniques are described and suggestions are made for their application in modern agricultural practices for managing crop yield losses due to pest infestation. Biopesticides have several advantages over their chemical counterparts and are expected to occupy a large share of the market in the coming period.

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Section: Biopesticides From Algal and Cyanobacterial Sourcesmentioning

confidence: 99%

An Overview of Some Biopesticides and Their Importance in Plant Protection for Commercial Acceptance

Kumar

Ramlal

Mallick

et al. 2021

Plants

255

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“…Poinsettia Integrated using systemic and trans laminar insecticides Lowest nymph density (1.0 + 0.5) was reported using imidcloprid. [359] Tomato Plant derivatives with the neonicotinoid insecticide Up to 94.4% mortality rate was recorded. [202] Table 7.…”

Section: Tomatoesmentioning

confidence: 99%

Whitefly (Bemisia tabaci) Management (WFM) Strategies for Sustainable Agriculture: A Review

et al. 2022

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The whitefly (Bemisia tabaci Gennadius) is a notorious devastating sap-sucking insect pest that causes substantial crop damage and yield losses due to direct feeding by both nymphs and adults and also through transmission of viruses and diseases. Although the foliar application of synthetic pesticides is crucial for efficient control of B. tabaci, it has adverse effects such as environmental pollution, resistance and resurgence of the pest, toxicity to pollinators, and crop yield penalty. Thus, a suitable, safe, and robust strategy for the control of whiteflies in the agricultural field is needed. The reports on whitefly-resistant transgenic plants are scanty, non-reproducible, and/or need secondary trials and clearance from the Genetic Engineering Appraisal Committee (GEAC), the Ministry of Environment and Forests (MoEF), and the Environmental Protection Agency (EPA). The present review encompasses explicit information compiled from 364 articles on the traditional, mechanical, biological, biotechnological, and chemical strategies for whitefly management (WFM), IPM strategy, and future prospects of WFM for food and agriculture security.

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“…Aphids (Hemiptera: Aphididae) and whiteflies (Homoptera: Aleyrodidae) severely attack many crops, which has caused reductions in crop yield and quality. 1,2 They are the most notorious and destructive pests, causing damage to crop foliage at the vegetative stage due to their high population densities by sucking crop sap and nutrients. 3−5 In addition to directly causing damage, sucking pests are vectors for transmitting plant viruses and can cause serious economic losses.…”

Section: ■ Introductionmentioning

confidence: 99%

“…All 1 H NMR and 13 C NMR spectra were acquired using a Bruker Avance spectrometer at 500 or 400 MHz in CDCl 3 with tetramethylsilane (TMS) as the reference. 1 H NMR (500 or 400 MHz) and 13 C NMR (125 or 100 MHz) spectra were recorded on a Bruker Avance spectrometer with TMS as an internal standard. A suitable crystal was selected on a SuperNova Dual, Cu at zero AtlasS2 diffractometer.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Aphids (Hemiptera: Aphididae) and whiteflies (Homoptera: Aleyrodidae) severely attack many crops, which has caused reductions in crop yield and quality. , They are the most notorious and destructive pests, causing damage to crop foliage at the vegetative stage due to their high population densities by sucking crop sap and nutrients. − In addition to directly causing damage, sucking pests are vectors for transmitting plant viruses and can cause serious economic losses. , At present, we are dependent on chemical pesticides to control the damage caused by these pests; however, pesticide resistance, pest resurgence, and the negative effects of pesticide residues on human health and the ecological environment have simultaneously occurred. − Natural products extracted from animals, plants, or microorganisms, have received extensive attention as insecticidal substitutes; however, the pesticidal activities of natural products are low compared with those of traditional agrochemicals. − Therefore, structurally modifying natural products as lead compounds to enhance their activities has been an important approach to develop new pesticides with potentially profound significance …”

Section: Introductionmentioning

confidence: 99%

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Synthesis, Crystal Structure, and Insecticidal Activity of Steroidal N-Piperidone

Jiang

et al. 2022

J. Agric. Food Chem.

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A series of steroidal piperidone derivatives were synthesized, and their agricultural activities were evaluated against Myzus persicae, Aphis citricola, Brevicoryne brassicae Linn., and Bemisia tabaci (Gennadius). Most of the tested compounds exhibited potent insecticidal activity against these four pests. Compound I-9 displayed the highest activity against M. persicae, A. citricola, and Brevicoryne brassicae, with LC 50 values of 11.3, 10.4, and 8.68 μg/mL, respectively. The mode of action test indicated that these derivatives had superior contact and systemic insecticidal activity against M. persicae. In addition, we initially explored whether the foregut and midgut might be the action sites of the target derivatives against M. persicae. Furthermore, a field trial showed that the control of compound I-9 was similar to that of acetamiprid against M. persicae, at a dose of 50 μg/mL; the control rates were 97.8 and 99.2% after 14 and 21 days, respectively. The structure−activity relationship of these analogues provided some important insights for the discovery and development of new insecticides to solve the current pesticide resistance crisis.

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Efficacy of three biopesticides against cotton pests under field conditions in South Africa

Cited by 18 publications

References 42 publications

An Overview of Some Biopesticides and Their Importance in Plant Protection for Commercial Acceptance

An Overview of Some Biopesticides and Their Importance in Plant Protection for Commercial Acceptance

Whitefly (Bemisia tabaci) Management (WFM) Strategies for Sustainable Agriculture: A Review

Synthesis, Crystal Structure, and Insecticidal Activity of Steroidal N-Piperidone

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