Melia azedarach Extract as an Antifeedant to Bemisia tabaci (Homoptera: Aleyrodidae)

Nardo, E. A. B. de; Costa, Andrés; Lourenção, A. L.

doi:10.2307/3495981

Cited by 39 publications

(27 citation statements)

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“…Moreover, this effect was clearly dose dependent and particularly pronounced, when a foliar application was used. The observation of repellent effects of neem on adult WF corroborates the reports of Coudriet et al (1985), Hilje et al (2003) and Nardo et al (1997) working with B. tabaci, and of Prabhaker et al (1999) with B. argentifolii. Similar results are also described for other pests attacking tomatoes such as leafminers Liriomyza trifolii (Burgess) and Liriomyza sativae 17.57 ± 0.490 e 100.0 ± 0.000 e 100.00 ± 0.00 e 100.00 ± 0.00 e 69.73 ± 0.290 e 10 ml 11.26 ± 0.508 f 100.0 ± 0.000 e 100.00 ± 0.00 e 100.00 ± 0.00 e 81.73 ± 0.280 f Values in columns followed by the same letters are not significantly different (Tukey's HSD test; P < 0.05).…”

Section: Plant Choice and Ovipositionsupporting

confidence: 91%

Effects of different application methods of azadirachtin against sweetpotato whitefly Bemisia tabaci Gennadius (Hom., Aleyrodidae) on tomato plants

Kumar

Poehling

Borgemeister

2005

J Applied Entomology

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Studies on three different neem treatment methods (seed, soil and foliar) and two different commercial neem products (NeemAzal T/S 1% azadirachtin and NeemAzalU 17% azadirachtin) against sweetpotato whitefly (WF) Bemisia tabaci Gennadius (Hom., Aleyrodidae) on tomato plants were conducted in cages in air-conditioned cultivation rooms. All three methods of neem treatments resulted in reduced colonization and oviposition. Overall oviposition intensity was significantly reduced (44%) by the treatment of tomato seeds but an even higher reduction (74%) was achieved through soil drenching both with 3.0 g/l NeemAzalU and foliar spraying (82%) with 10 ml/l of NeemAzal TS compared with control treatments. In contrast, soil and foliar treatment increased fecundity per female up to 33% and 32%, respectively, at the highest tested concentrations. Reduced egg hatch could be observed only at high neem concentrations; 62% and 51% of deposited eggs hatched at the highest dose rates of NeemAzalU in case of seed and foliar treatments, respectively; whereas only 43% of deposited eggs hatched in case of foliar treatments at highest dose rates of NeemAzal T/S. Seed (35%), foliar (93%) and soil treatments (91%) caused high mortality rates of immatures and reduced number of hatching adults compared with control plants treated with a blank formulation or water. The mortality among immatures increased in relation to azadirachtin concentrations. Concerning susceptibility of different developmental stages, young larvae were the most sensitive. Foliar treatment was the most efficient, with 100% mortality for all three larval stages at high concentrations (10 ml/l of NeemAzal T/S) compared with 78-87% mortality with soil treatment (at 3.0 g/l NeemAzalU). The findings are discussed in the context of integrated control of WF in protected cultivation environments in the humid tropics.

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Section: Plant Choice and Ovipositionsupporting

confidence: 91%

Effects of different application methods of azadirachtin against sweetpotato whitefly Bemisia tabaci Gennadius (Hom., Aleyrodidae) on tomato plants

Kumar

Poehling

Borgemeister

2005

J Applied Entomology

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“…No entanto, em um experimento realizado por Prabhaker et al (1999), verificou-se que Azatin, um produto formulado de nim, suprimiu tanto a postura quanto causou morte de ninfas de B. argentifolii. Resultados obtidos por Nardo et al (1997) indicam que o extrato de cinamomo Melia azedarach, também uma Meliaceae, pode ter causado redução do número de ovos de mosca-branca e, conseqüentemente, na quantidade de pupas produzidas, devido sua ação inibidora de alimentação.…”

Section: Resultados E Discussão Experimento Sob Condições De Casa De unclassified

“…Juss., da família Meliaceae, é conhecido há muito tempo por ser resistente ao ataque de muitos insetos (Dimetry et al, 1993), apresentando muitos compostos úteis, inclusive, Azadiractinas, que são consideradas ideais para o manejo ecológico de pragas (Rice, 1993). As Azadiractinas causam diversos efeitos sobre insetos, agindo como inibidoras de alimentação, reguladoras de crescimento (Nardo et al, 1997) e esterilizantes (Schmutterer, 1988). Apesar de seus efeitos sobre insetos, não foi detectada toxicidade de Azas sobre mamíferos (Pyke et al, 1993).…”

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Eficiência de Azadiractina no controle de mosca-branca em meloeiro sob condições de casa de vegetação e de campo

2003

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O melão é um dos principais produtos agrícolas de exportação do nordeste brasileiro, sendo, atualmente, sua produção gravemente afetada pela mosca-branca (Bemisia argentifolii), que por sua vez só é controlada por inseticidas convencionais. Estudou-se a potencialidade de um inseticida formulado à base de Azadiractina a 1% para o controle desta praga em meloeiro sob condições de casa de vegetação e de campo. O delineamento experimental utilizado foi de blocos ao acaso, com seis tratamentos e quatro repetições. Avaliou-se a média de ninfas no ensaio de casa de vegetação e a média de adultos e de ninfas no campo. Obteve-se uma resposta progressiva de controle de ninfas em casa de vegetação. No campo, os melhores resultados foram obtidos com do uso de Azadiractina, a 4 e 8 ml/L de calda, com eficiência de 67,83 e 70,13%, respectivamente, para controle de adultos, e Azadiractina a 8,0 ml/L, com eficiência de 88,10% e Azadiractina + Permethrin, cuja eficência foi de 85,71%, para controle de ninfas.

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“…The extracts of Melia azaderach L., Azadirachta indica A. Juss. affect the fertility and mortality of B. tabaci (Nardo et al, 1997) , soybean oil and cotton grains have also shown toxicity on B. tabaci (Butler et al, 1988). Aqueous and ethanol extracts of capsicum frutescens have had negative effects on hatching, fertility and adult survival of B. tabaci (Bouchelta et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

The effect of pesticides and aqueous extracts of Azadirachta indica (A. Juss) and Jatropha carcus L. on Bemisia tabaci (Gennadius) (Homoptera: Aleyrididae) and Helicoverpa armigera (Hübner)(Lepidoptera: Noctuidae) found on tomato plants in Côte d’Ivoire.

Diabaté¹,

Gnago²,

Koffi³

et al. 2014

J. App. Bioscience.

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Objective:The objective was to evaluate the effects of foliar application of Jatropha and neem aqueous extracts compared to a conventional insecticide treatment on the number of whitefly Bemisia tabaci (Gennadius) and bollworm Helicoverpa armigera (Hübner), yield of tomatoes in plots and the potentials of using any of these aqueous extracts to control these insect pests. Methodology and results: the study was conducted in the region of Moronou (Bongouanou, Koffikro, CBC Kangandissou). The insecticides Décis 12 EC® and Cypercal 50 EC®, and neem and jatropha aqueous extract were used for tomato foliar treatment (neem and jatropha seeds 80 and 50g/L, neem leaves 67 g/L). The treatments of tomato plant plots with pesticides Decis® and Cypercal® showed similar yields of biopestcide made of neem and jatropha in Ahorosso (P=0.00), Bongouanou (P=0.07) and CBC Kangandissou (P=0.01) plots. All of these treatments reduced the number of Bemisia tabaci adults, reduced the number of Helicoverpa armigera larvae on tomato plants and increased number of fruits per plant, the fruit weight per plant and the yield. Conclusion and application of findings: Statistical analysis shows that aqueous extract of jatropha and neem seed 80 g/L and 50 g/L, and of neem leaves 67 g/L are as effective as pesticides Décis® and Cypercal® on Bemisia tabaci and Helicoverpa armigera. Consequently, these biopesticides increased the number of fruits per plant and yield. This result should enable use of aqueous extract of neem and jatropha seed and of neem leaves to protect tomato plants against Bemisia tabaci and Helicoverpa armigera at farm.

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Melia azedarach Extract as an Antifeedant to Bemisia tabaci (Homoptera: Aleyrodidae)

Cited by 39 publications

References 0 publications

Effects of different application methods of azadirachtin against sweetpotato whitefly Bemisia tabaci Gennadius (Hom., Aleyrodidae) on tomato plants

Effects of different application methods of azadirachtin against sweetpotato whitefly Bemisia tabaci Gennadius (Hom., Aleyrodidae) on tomato plants

Eficiência de Azadiractina no controle de mosca-branca em meloeiro sob condições de casa de vegetação e de campo

The effect of pesticides and aqueous extracts of Azadirachta indica (A. Juss) and Jatropha carcus L. on Bemisia tabaci (Gennadius) (Homoptera: Aleyrididae) and Helicoverpa armigera (Hübner)(Lepidoptera: Noctuidae) found on tomato plants in Côte d’Ivoire.

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