Influence of climate change on Helicoverpa armigera (Hubner)in pigeonpea

Jakhar, Bhanwar Lal; Singh, Neetu; Venilla, S; Patel, M. H.; Vekaria, M. V.; Patel, B. H.; Panickar, Bindu

doi:10.53911/jae.2016.2204

Cited by 3 publications

(3 citation statements)

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“…The present finding also got support from the observations of Rathod et al (2017) who reported that the peak larval population of gram pod borer (H. armigera) was recorded in 42 nd SMW (third week of October). The present findings are dissimilar with Jakhar et al (2016) who reported that H. armigera incidence started in 40 th SMW (First week of October) and peak incidence in 43 rd SMW (Fourth week of October). Chaitanya (2012) reported that H. armigera incidence initiated during third week of November and reached peak during second fortnight of December.…”

Section: Population Dynamics Of Helicoverpa Armigera During Kharif 2019contrasting

confidence: 99%

Impact of Abiotic Factors on Population Fluctuation of Major Pod Borers in Black Gram under Western U.P. Conditions

Yadav¹,

Singh²,

Singh³

et al. 2022

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Background: Black gram (Vigna mungo L.) is the member of Asian Vigna crop group and also known as urdbean grown in spring and Kharif season in the Indian subcontinent. It is the fourth most important short-duration pulse crop grown in India. Black gram crop is attacked by a number of insect pests from sowing to harvest in the field as well as in storage condition. Among these insect-pests pod borers i.e. spotted pod borer, Maruca vitrata (Geyer) and gram pod borer, Helicoverpa armigera (Hubner) are serious insect-pests of black gram causing seed and pod damage. Therefore, keeping these views in mind, the present study aimed to study the population fluctuation of major pod borers (M. vitrata and H. armigera) in black gram. Methods: The research trials were conducted during two consecutive years i.e. Kharif, 2018 and 2019 at CRC of SVPUAT, Meerut to observe the population dynamics of major pod borers in black gram. A plot size of 200 m2 with black gram variety ‘Pant Urd-31’ was sown manually 5-7 cm deep on 18 August, 2018 for the first year experiment and on 20 August, 2019 for the second year experiment, by following standard agronomical practices and the crop was maintained without insecticide application. Result: The study on the seasonal incidence of pod borers viz., M. vitrata and H. armigera start from 39th to 44th standard week and both the larvae attain their peak in 41st and 42nd standard week during Kharif, 2018 and 2019.

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Section: Population Dynamics Of Helicoverpa Armigera During Kharif 2019contrasting

confidence: 99%

Impact of Abiotic Factors on Population Fluctuation of Major Pod Borers in Black Gram under Western U.P. Conditions

Yadav¹,

Singh²,

Singh³

et al. 2022

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“…Factors affected by climate change, such as temperature, rainfall and relative humidity, seem to have mostly positive effects on fecundity and development of migratory pests like locusts 72 , 73 . However, for other lepidopteran pest species, like H. armigera , climate change has negatively affected its survival and reproduction 74 , 75 . Climate change is also reducing the amount of rainfall, which has had an impact on the ecosystem dynamics and vegetation structure of grasses in South Africa reducing grassland areas 76 , but also grass productivity, shifting these grasslands to shrubland and other tree-dominated biomes 77 , 78 .…”

Section: Discussionmentioning

confidence: 99%

Predicting potential global and future distributions of the African armyworm (Spodoptera exempta) using species distribution models

Gómez-Undiano

Musavi²,

Mushobozi³

et al. 2022

Sci Rep

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Invasive species have historically been a problem derived from global trade and transport. To aid in the control and management of these species, species distribution models (SDMs) have been used to help predict possible areas of expansion. Our focal organism, the African Armyworm (AAW), has historically been known as an important pest species in Africa, occurring at high larval densities and causing outbreaks that can cause enormous economic damage to staple crops. The goal of this study is to map the AAW’s present and potential distribution in three future scenarios for the region, and the potential global distribution if the species were to invade other territories, using 40 years of data on more than 700 larval outbreak reports from Kenya and Tanzania. The present distribution in East Africa coincides with its previously known distribution, as well as other areas of grassland and cropland, which are the host plants for this species. The different future climatic scenarios show broadly similar potential distributions in East Africa to the present day. The predicted global distribution shows areas where the AAW has already been reported, but also shows many potential areas in the Americas where, if transported, environmental conditions are suitable for AAW to thrive and where it could become an invasive species.

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“…Beside Coccinellidae, brown lacewings (Neuroptera; Hemerobiidae) and predatory gall midges (Diptera; Cecidomyiidae) are important predator of scale insects (Tandon and Lal, 1978). A wide array of predators and parasitoids has been found to be present and they play important role to control the mango mealy bug populations in mango orchards (Jakhar et al, 2016;Hayat, 2009). Nevertheless, there is no published literature on predator abundance or diversity against mango mealy bug of the species (D. mangiferae) which is one of the important pests of mango.…”

Section: Introductionmentioning

confidence: 99%

Study of Diversity and Abundance Pattern of Natural Enemies Associated with the Mango Mealy Bug (Drosicha mangiferae G) at Malda of West Bengal, India

Roy,

Saha,

Gupta

et al. 2023

IJARe

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Background: As a pest, the mango mealy bug (Drosicha mangiferae G) is very important as it ranks second in terms of damage inflicted to the fruit crop. Natural enemies such as predators, parasitoids are considered to be significant deterrent of mango mealy bug. These natural enemies can act as biological control agent which can bring about pest suppression as an important tool of integrated pest management. Therefore, studies of natural enemy complex of mango mealy bug become pertinent. In the current study the available predators, parasitoids of mango mealy bug was surveyed at different regions of Malda. Methods: The predators of mango mealy bugs were studied by sampling mealy bug infested colonies present in the inflorescence and in 20 cm2 area of trunk. Sampling was carried out by visualization of predatory behavior of the entomophagous insects. Parasitoid was studied by observing the emergence of adults from infested mealy bugs in a closed container. Result: Ladybird beetles and Green lacewings were the most abundant predators; their relative abundance was 48.96% and 37.30%. Among the coccinellids, Rodalia amabilis and one unidentified coccinellid were found as dominant. The green lacewing larva, Chrysoparla sp. acted as important predator. Besides Ladybird beetles and Green lacewings, the spiders and bugs were also noticed in the predatory guild. Only one dipteran parasitoid species, Cryptochetum sp. nr. iceryae (Williston) was found to parasitize the mealy bugs. The standardization of mass rearing techniques for the three predators and one parasitoid and their release in the mealy bug infested orchards can bring about efficacious control of this menacing pest.

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Influence of climate change on Helicoverpa armigera (Hubner)in pigeonpea

Cited by 3 publications

References 1 publication

Impact of Abiotic Factors on Population Fluctuation of Major Pod Borers in Black Gram under Western U.P. Conditions

Impact of Abiotic Factors on Population Fluctuation of Major Pod Borers in Black Gram under Western U.P. Conditions

Predicting potential global and future distributions of the African armyworm (Spodoptera exempta) using species distribution models

Study of Diversity and Abundance Pattern of Natural Enemies Associated with the Mango Mealy Bug (Drosicha mangiferae G) at Malda of West Bengal, India

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