Cotton

Nagrare, V. S.; Kranthi, S.; Kumar, Rishi; Dharajothi, B.; Amutha, M.; Kranthi, K. R.

doi:10.1007/978-81-322-2677-2_26

Cited by 12 publications

(20 citation statements)

References 10 publications

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“…This results in a bunchy top appearance, yellowing of leaves due to essential nutrient depletion, less boll formation with small size, and ultimately plant death. 13,18,19 Indirectly, the pest also hinders photosynthesis due to the release of honeydew on leaves with formation of black mold. 18 Insecticide resistance is one of the major ecological backlash phenomena 20 that results in the reduced susceptibility of a pest 21 due to accumulation of major or minor genes 22,23 when a pest population is under insecticide selection pressure over generations.…”

Section: Introductionmentioning

confidence: 99%

“…13,18,19 Indirectly, the pest also hinders photosynthesis due to the release of honeydew on leaves with formation of black mold. 18 Insecticide resistance is one of the major ecological backlash phenomena 20 that results in the reduced susceptibility of a pest 21 due to accumulation of major or minor genes 22,23 when a pest population is under insecticide selection pressure over generations. 21 Management of P. solenopsis relies mainly on the use of insecticides from several groups but repeated and unnecessary insecticide applications result in insect resistance to some insecticides in the field 24,25,17 and in laboratory-selected strains.…”

Section: Introductionmentioning

confidence: 99%

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Laboratory selection, cross‐resistance, and estimations of realized heritability of indoxacarb resistance in Phenacoccus solenopsis (Homoptera: Pseudococcidae)

Afzal

Shad

Ejaz

et al. 2019

Pest Management Science

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BACKGROUND Cotton mealybug Phenacoccus solenopsis is a pest of cotton, vegetables, ornamentals, and medicinal plants. In many parts of the world P. solenopsis has been managed by integration of cultural, mechanical, biological and chemical methods, but in Pakistan the use of insecticide sprays has resulted in the development of resistance to some insecticides. In this study indoxacarb resistance was investigated by selecting a P. solenopsis population under laboratory conditions for many generations. The cross‐resistance potential of indoxacarb resistance with other chemistries and the realized heritability of indoxacarb resistance were also evaluated. RESULTS A field population of P. solenopsis selected with indoxacarb for 27 generations had a 25 623.17‐fold resistance level. The highly indoxacarb resistant population showed very high cross‐resistance to spinosad and very low cross‐resistance to bifenthrin and chlorpyrifos. The mean estimated h2 of resistance to indoxacarb was only 0.04. The number of generations predicted for the development of ten‐fold indoxacarb resistance at a constant h2 = 0.04 against selection intensities of 10% and 95% were 346 and 36 (slope = 3.18), 237 and 25 (slope = 2.18) and 128 and 13 (slope = 1.18). However, at a constant slope = 1.18 and selection intensities of 10% and 95%, the same increase in indoxacarb resistance occurred after 128 and 13 (h2 = 0.04), 103 and 11 (h2 = 0.05), and 86 and 9 (h2 = 0.06) generations. CONCLUSION This study revealed that P. solenopsis has a very high resistance to indoxacarb as a result of laboratory selection. Thus, resistance to this insecticide in the field may also occur. Indoxacarb resistance can be minimized by rotating it with bifenthrin and/or chlorpyrifos due to its very low cross‐resistance to these insecticides and by avoiding its rotation with Spinosad, which has very high cross‐resistance. © 2019 Society of Chemical Industry

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Laboratory selection, cross‐resistance, and estimations of realized heritability of indoxacarb resistance in Phenacoccus solenopsis (Homoptera: Pseudococcidae)

Afzal

Shad

Ejaz

et al. 2019

Pest Management Science

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“…Cotton plants host a high boll, leaf, root, square and stem pest complex (Allen et al, 2018). The mealybug, Phenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae) is a major cotton pest in several countries (Nagrare et al, 2016). This insect sucks cotton sap, injects toxins and secretes "honeydew" stimulating the development of black sooty moulds which adversely affect photosynthesis (Joshi et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Survival, development and reproduction of Phenacoccus solenopsis (Hemiptera: Pseudococcidae) on kaolin-treated cotton

Guedes

Zanuncio

2020

Braz. J. Biol.

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The mealybug, Phenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae) is a cotton pest widespread in several cotton growing regions of Brazil, particularly in the semi-arid region of southwestern Bahia. The impact of kaolin on survival, development and reproduction of P. solenopsis was evaluated in the laboratory. The experiment was developed in a completely randomized design with two treatments: immature or newly emerged adults of P. solenopsis sprayed with kaolin and fed with cotton leaf discs treated with kaolin suspension (with kaolin) (T1) and immature or newly emerged adults of P. solenopsis sprayed with distilled water and fed with cotton leaf discs treated with distilled water (without kaolin) (T2). The kaolin suspension shortens the life cycle, increases the reproductive potential and population growth of the cotton mealybug, P. solenopsis and, therefore, it should be used with caution on cotton plants in regions with a history of occurrence of this pest.

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“…The chemical control of Mealy bugs is not only expensive, but it also disturbs the habitats of natural enemies and has negative impacts on different ecosystems and human health [5,6]. To avoid such problems, several parasitoids and predators were used to control the spread and damage that can be caused by Mealy bugs and keep the pest populations below the economic injury level [7]. In the United States of America, the parasitoid, Aenasius arizonensis (Girault), Family Encyrtidae (Hymenoptera, Chalcidoidea) was described as Chalcaspis arizonensis [9], and later transferred to Aenasius [10].…”

Section: Introductionmentioning

confidence: 99%

Effectiveness of Endoparsitoid Wasp AenasiusArizonensis (Girault) as a Successful Bio-Control of Cotton Mealy Bug, PhenacoccusSolenopsis Tinsley, in Khartoum State, Sudan.

Mohamed

Taha

Adam

2019

JAR

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The objective of this study was to evaluate the effectiveness of endophagous Encyrtid parasitic wasp Aenasiusarizonensis (Girault) (Hymenoptera, Chalcidoidea), as a natural enemy for controlling the Mealybug, Phenacoccussolenopsis Tinsley (Hemiptera: Pseudococcidae). Where a Randomized Complete Block Design (RCBD) was adopted. Both, field survey and Laboratory experiments were conducted to study some biological characteristics of the parasitoid A. arizonensis. The results of field study revealed that, the parasitioid was available most of the year, and was highly effective on adults and last larval instar of the mealy bug, P. Solenopsis, with a total percentage of parasitism of 31.26%. While the laboratory results showed that, the duration from oviposition to adult emergence were similar for both male and female. Longevity of male was 23± 2.33 days and female 23.37±1.89 days. Mean daily fecundity in terms of number of Parasitized hosts /female / day ranged from 20 to 24. The sex ratio was 1:1.6 for the male and female in the progeny. Generally, a mass rearing of this parasitoid, with a conservation and augmentation releases could help in the application of an effective management strategy for the control of the cotton mealy bug in the field.

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Cotton

Cited by 12 publications

References 10 publications

Laboratory selection, cross‐resistance, and estimations of realized heritability of indoxacarb resistance in Phenacoccus solenopsis (Homoptera: Pseudococcidae)

Laboratory selection, cross‐resistance, and estimations of realized heritability of indoxacarb resistance in Phenacoccus solenopsis (Homoptera: Pseudococcidae)

Survival, development and reproduction of Phenacoccus solenopsis (Hemiptera: Pseudococcidae) on kaolin-treated cotton

Effectiveness of Endoparsitoid Wasp AenasiusArizonensis (Girault) as a Successful Bio-Control of Cotton Mealy Bug, PhenacoccusSolenopsis Tinsley, in Khartoum State, Sudan.

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