Ageratum conyzoides L. for the management of pests and diseases by small holder farmers

Rioba, Naomi B.; Stevenson, Philip C.

doi:10.1016/j.indcrop.2017.06.068

Cited by 26 publications

(20 citation statements)

References 85 publications

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“…Both A. conyzoides and P. clematidea produce a strong odour and are densely villous. 31 A. conyzoides is typically found in cultivated fields and other disturbed ecosystems, and has insecticidal activity against several crop pests, 31 including Sitophilus zeamais Motsch., 32 Diaphania hyalinata (L.), Musca domestica (L.), Periplaneta americana (L.) and Rhyzopertha dominica (F.), 33 exerts ovicidal action, and induces sterility in larvae and females of Dysdercus flavidusSign. 34 However, D. citri adults were able to live for 48 days on plants of A. conyzoides; the reason is not yet known and needs further research.…”

Section: Discussionmentioning

confidence: 99%

Adaptability and ‘CandidatusLiberibacter asiaticus’ titres of Diaphorina citri adults on three weed species in China

Fang

et al. 2021

Pest Management Science

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BACKGROUND: Diaphorina citri is a vector of 'Candidatus Liberibacter asiaticus' (CLas), which is associated with citrus huanglongbing (HLB). In this study, the adaptability and CLas titres of D. citri adults on three weed species, namely, Ageratum conyzoides, Solanum nigrum and Praxelis clematidea, which are widely distributed in citrus orchards in China, were determined. RESULTS: D. citri selected S. nigrum preferentially over the other weed species. The longest survival times of D. citri adults on A. conyzoides, S. nigrum and P. clematidea were 48, 41 and 11 days, respectively. On S. nigrum, the survivorship of females was significantly higher than that of males. The CLas titres of D. citri adults feeding on the three weeds for 1 week increased significantly during autumn but did not change significantly during spring. Conversely, the titres of adults on citrus increased significantly during spring but did not change significantly during autumn. CONCLUSION: D. citri exhibited different adaptabilities to the three weed species, but the CLas titres of D. citri adults did not decrease on any of the weeds. These results suggested that the three weed species could help dispersing of D. citri and transmission of CLas while ideal host conditions were scarce or absent.

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Section: Discussionmentioning

confidence: 99%

Adaptability and ‘CandidatusLiberibacter asiaticus’ titres of Diaphorina citri adults on three weed species in China

Fang

et al. 2021

Pest Management Science

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“…biological control can result in other benefits besides insect-mediated pest suppression, such as pollination 15 and provisioning botanical insecticides, herbal medicines, spices and indigenous food 20,21 . Insecticides obtained from plants ('botanicals') have been documented to be cost-effective and sustainable in managing insect pests including those that have developed resistance to synthetic insecticides [22][23][24][25] . Botanical insecticides cause minimal harm to predators and parasitoids because they usually exhibit actions such as repellence, anti-feeding, oviposition deterrence rather than toxicity 26 .…”

mentioning

confidence: 99%

Scope for non-crop plants to promote conservation biological control of crop pests and serve as sources of botanical insecticides

Amoabeng

Stevenson

Mochiah

et al. 2020

Sci Rep

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Besides providing food and shelter to natural enemies of crop pests, plants used in conservation biological control interventions potentially provide additional ecosystem services including providing botanical insecticides. Here we concurrently tested the strength of these two services from six non-crop plants in managing cabbage pests in Ghana over three successive field seasons. Crop margin plantings of Ageratum conyzoides, Tridax procumbens, Crotalaria juncea, Cymbopogon citratus, Lantana camara and Talinum triangulare were compared with a bare earth control in a three-way split plot design such that the crop in each plot was sprayed with either a 10% (w/v) aqueous extract from the border plant species, a negative control (water) and a positive control (emamectin benzoate 'Attack' insecticide). Pests were significantly less numerous in all unsprayed treatments with non-crop plant margins and in corresponding sprayed treatments (with botanical or synthetic insecticide positive control) while treatments with bare earth margin or sprayed with water (negative controls) had the highest pest densities. Numbers of predators were significantly depressed by synthetic insecticide but higher in other treatments whether unsprayed or sprayed with botanical insecticide. We conclude that some plant species have utility in both conservation biological control and as source of botanical insecticides that are relatively benign to natural enemies. In this crop system, however, the additional cost associated with using botanical insecticides was not justified by greater levels of pest suppression than achieved from border plants alone. Insect pest attack causes huge crop losses 1 affecting the potential availability of food for over one billion people 2 , and threatening global food security 3. Effective pest management is critical to meeting global food demands 4-6 and synthetic insecticides have been the principal tool in the past six decades 7,8. Even with the introduction of newer and relatively safer insecticides 8 and increased application per unit area and time 9 , crop loss resulting from insect damage has doubled in the past four decades 1,10,11. Indiscriminate and excessive application has led to the elimination of important organisms in the agroecosystem that support crop production 12,13. This is especially prevalent in developing countries including Ghana where farmers and the environment are exposed to high levels of synthetic insecticides, including active ingredients that have been banned in developed nations due to high toxicity and persistence 14. Inadequate provision of important ecosystem services including natural enemy-mediated pest control reinforces reliance on hazardous inputs such as insecticides and threatens agricultural sustainability 15,16. Conservation biological control based on habitat manipulation has been proposed as a sustainable alternative to synthetic insecticides 17. Habitat manipulation involves intentionally establishing plant species at the farm scale or landscape scale to provide conduc...

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“… Sl.No Plant species (common name & Family) Parts of the plant Target pests References 1 Acorus calamus L. (Sweet flag) Asteraceae Leaf P. xylostella Diamondback Moth & Spodoptera frugiperda Fall armyworm (Lepidoptera: Noctuidae) Kumar et al . 74 2 Ageratum conyzoides L. (White weed) Asteraceae Leaf P. xylostella & B. brassicae Cabbage aphid Rioba and Stevenson 75 3 Alpinia galanga L. Willd. (Siamese ginger) Zingiberaceae Rhizomes S. frugiperda Datta et al .…”

Section: Botanicals Against Crucifer Pests Controlmentioning

confidence: 99%

Current biological approaches for management of crucifer pests

Mayanglambam

Singh

Rajashekar

2021

Sci Rep

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Cabbage is considered as one of the most commonly found vegetables and it has been cultivated in large areas throughout the year. As it is mostly grown in large areas, higher rate of pest infestation likely to occur, which hinder its total production and consumption. However, continuous use of synthetic pesticides in agricultural pest management often leads to various negative impacts such as development of resistance by the pest, adverse effect on non-target organisms and hazardous effect on environment. These drawbacks led to an alternative approaches for control of crucifer pests that are cost effective, biodegradable, low toxic effect on non-target organisms and eco-friendly. This review brings together all the information of different biological practices for management of crucifer pests and list of botanical insecticides and entomopathogenic organisms that are being reported. This will help in establishing the knowledge of limited studies on pest management using different biological control methods to more challenging research and conveys the importance of pest management system for taking research forward.

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Ageratum conyzoides L. for the management of pests and diseases by small holder farmers

Cited by 26 publications

References 85 publications

Adaptability and ‘CandidatusLiberibacter asiaticus’ titres of Diaphorina citri adults on three weed species in China

Adaptability and ‘CandidatusLiberibacter asiaticus’ titres of Diaphorina citri adults on three weed species in China

Scope for non-crop plants to promote conservation biological control of crop pests and serve as sources of botanical insecticides

Current biological approaches for management of crucifer pests

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