Presence and Abundance of Different Insect Predators Against Sucking Insect Pest of Cotton

Solangi, Ghulam Sarwar; Mahar, G M; ., F.C. Oad

doi:10.3923/je.2008.31.37

Cited by 11 publications

(3 citation statements)

References 8 publications

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“…Possible causes of the reduction in the abundance of Aphids out of the joint effects of weather factors and changes in agricultural practices. The current results are in agreement with Solangi et al (2008) who cleared that a positive correlation between insect predators and piercing-sucking insect populations. The second wheat plantation (mid of November) were a positive and significant effect between insect predators, C. undecimpunctata, C.…”

Section: Effect Of Biotic and Biotic Factors On The Population Density Of Aphids Sppsupporting

confidence: 93%

Effects of Certain Weather, Biotic Factors and Chemical Components on The population of Aphids in Egyptian Wheat Fields.

El-Dessouki

Mansour²,

Eryan

2022

Egyptian Academic Journal of Biological Sciences. A, Entomology

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Aphid is assumed one of the most severe pests attacking wheat causing harm to the plants either directly by sucking juice or indirectly as a vector of diseases. Host plant resistance is a sturdy component in Integrated Pest Management (IPM) to decrease the injury of aphid insects. We studied the population abundance and susceptibility of two Egyptian wheat cultivars (Misr 1 and Misr 3) to Aphid spp infestation. The results indicated that the total number of Aphids on wheat Misr 1 variety during the seasons, 2019-2020 and 2020-2021 were 536 and 191 respectively whereas, on Misr 3 variety were 1274 and 1388 respectively. The results of the simplecorrelation during 2020 season, aphid density was insignificantly correlated with a daily mean of maximum temperature, daily mean of minimum temperature, daily mean of rainfall and R.H%, whereas, the relationship was significant with predatory insects. In 2021, a significant relationship with a daily mean of maximum temperature, daily mean of minimum temperature and predatory insects were found. For the effect of plant age, simple correlation showed a positive and significant effect with Age 1 and Age 2 with (r) values were 0.58 and 0.48 respectively, whereas the second season was negative and insignificant with Age 2 and Age 3 and positive insignificant effect with Age 1 . Here, we tested the susceptibility of two wheat varieties to the infested with Aphid density, the highest infestation of aphid species on wheat Misr 3 variety associated with highest total protein (12.2%) and total phenols content (0.95±0.04 mg/gm), whereas, the least infestation by aphid species on wheat Misr 1 variety associated with least total protein and phenols content.

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Section: Effect Of Biotic and Biotic Factors On The Population Density Of Aphids Sppsupporting

confidence: 93%

Effects of Certain Weather, Biotic Factors and Chemical Components on The population of Aphids in Egyptian Wheat Fields.

El-Dessouki

Mansour²,

Eryan

2022

Egyptian Academic Journal of Biological Sciences. A, Entomology

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“…Whitefly, jassid and thrips were the major insect pests, while their densities generally peaked from June to October and the pests normally disappeared after October. Various previous workers had also reported the densities of sucking pests reached to the highest numbers variably during whole growing months or throughout the cotton growth period (Solangi et al, 2008: Sana et al, 2011Ahmad et al, 2011;Sarwar, 2103 b). Thus, in the present research, at par overall mean minimum and maximum populations studied previously were found from beginning of crop till the end of season in unprotected cotton.…”

Section: Discussionmentioning

confidence: 90%

Management of Sucking Pests of early Season Cotton by Application of different Seed and Soil Insecticides in Pakistan

Sattar¹,

Sarwar²

2022

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Cotton is cash crop of Pakistan and sucking insect pests are serious issue especially in early cotton season. To cope with the issue, a field experiment was conducted to investigate the post emergence effectiveness of two seed and two soil applied insecticides on populations’ development of sucking insect pests in cotton. The seed applied insecticides i.e. Imidacloprid (Confidor 70 WS) and Thiamethoxam (Actara 70 WS) were applied to the seed before sowing. Two granular insecticides i.e. Aldicarb (Temik 10 G) and Carbaryl (Sevin 10 D) were applied in furrows with a modified applicator that was calibrated to deliver the desired rate. The results showed that all the tested insecticides were very effective in controlling the targeted sucking insect pests i.e. thrips, whiteflies and jassids as compared to untreated cotton. Conversely, the seed applied insecticides i.e. Imidacloprid and Thiamethoxam showed more effectiveness compared to soil applied granular insecticides i.e. Aldicarb and Carbaryl in reducing sucking pests’ populations. Such systemic insecticides applied as treated seed can be present in sufficient quantity in germinating plants leading to toxicity to pests, and helpful for safety of natural enemies. The population trends of the three principal sucking insect pests namely thrip, whitefly and jassid were varied significantly over the study months thereby indicating that the population build up was favoured by certain factors. Consequently, the use of seed applied insecticides can be a major component to put into practice in the integrated pest management technology of cotton.

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“…Several species of mealybugs have caused considerable economic damage to agricultural and horticultural plants in the tropics in the last few decades [28] . They also have the potential to become major cotton pests which is evident from the severe damage reported in different parts of Asia [29] – [31] . Particularly, Phenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae) has attracted much attention worldwide because of its harmful effects on cotton [30] , [32] – [35] .…”

Section: Introductionmentioning

confidence: 99%

Effects of Transgenic Cry1Ac + CpTI Cotton on Non-Target Mealybug Pest Ferrisia virgata and Its Predator Cryptolaemus montrouzieri

Zhang

Liu

et al. 2014

PLoS ONE

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Recently, several invasive mealybugs (Hemiptera: Pseudococcidae) have rapidly spread to Asia and have become a serious threat to the production of cotton including transgenic cotton. Thus far, studies have mainly focused on the effects of mealybugs on non-transgenic cotton, without fully considering their effects on transgenic cotton and trophic interactions. Therefore, investigating the potential effects of mealybugs on transgenic cotton and their key natural enemies is vitally important. A first study on the effects of transgenic cotton on a non-target mealybug, Ferrisia virgata (Cockerell) (Hemiptera: Pseudococcidae) was performed by comparing its development, survival and body weight on transgenic cotton leaves expressing Cry1Ac (Bt toxin) + CpTI (Cowpea Trypsin Inhibitor) with those on its near-isogenic non-transgenic line. Furthermore, the development, survival, body weight, fecundity, adult longevity and feeding preference of the mealybug predator Cryptolaemus montrouzieri Mulsant (Coleoptera: Coccinellidae) was assessed when fed F. virgata maintained on transgenic cotton. In order to investigate potential transfer of Cry1Ac and CpTI proteins via the food chain, protein levels in cotton leaves, mealybugs and ladybirds were quantified. Experimental results showed that F. virgata could infest this bivalent transgenic cotton. No significant differences were observed in the physiological parameters of the predator C. montrouzieri offered F. virgata reared on transgenic cotton or its near-isogenic line. Cry1Ac and CpTI proteins were detected in transgenic cotton leaves, but no detectable levels of both proteins were present in the mealybug or its predator when reared on transgenic cotton leaves. Our bioassays indicated that transgenic cotton poses a negligible risk to the predatory coccinellid C. montrouzieri via its prey, the mealybug F. virgata.

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Presence and Abundance of Different Insect Predators Against Sucking Insect Pest of Cotton

Cited by 11 publications

References 8 publications

Effects of Certain Weather, Biotic Factors and Chemical Components on The population of Aphids in Egyptian Wheat Fields.

Effects of Certain Weather, Biotic Factors and Chemical Components on The population of Aphids in Egyptian Wheat Fields.

Management of Sucking Pests of early Season Cotton by Application of different Seed and Soil Insecticides in Pakistan

Effects of Transgenic Cry1Ac + CpTI Cotton on Non-Target Mealybug Pest Ferrisia virgata and Its Predator Cryptolaemus montrouzieri

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