Comparative Studies on the Competitive Displacement of major Indigenous pests of Sorghum in Relation to Invasive Alien pest Fall Armyworm, Spodoptera frugiperda

Author: Jatin K., S.P.S. Tomar, Sathish Kota, Suraj Mishra and Jagdish Jaba*

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Abstract

Elimination/displacement of major indigenous pests from their natural habitat by other invasive pests are results of direct and indirect competitive interactions. Competitive displacement could be related to the decrease in native pest population and this type of interactions are most commonly observed in individuals competing for the same food resource or occupying the same ecological habitat. The present study is about the impact of Fall armyworm, (Spodoptera frugiperda) on the native pest community of shoot fly, Atherigona soccata (Rondani) and Stem borer, Chilo partellus (swinhoe) are considered as economically important pests of sorghum and maize during the Kharif and Rabi seasons in India. There is a clear indication that shoot fly and stem borer infestation starts at the at same age of the crop causing a huge loss. However, during the recent times after the invasion of fall armyworm the native pest complex scenario has changed in sorghum/maize ecosystem. There is very little inf

Keywords

Indigenous pest, Sorghum, Shoot fly, Stem borer, FAW

Conclusion

The present study gives further insight on FAW influencing the partial disappearance, low survival rates of shoot fly and stem borer in sorghum crop. More research is needed to understand the detailed competitive displacement rate for all cereals and millets crops. Our present results, it was confounded that the arrival of FAW in 2018, the damage and yield losses by stem borers, which had previously been a serious danger to maize production in India, have suddenly waned, indicating likely displacement or at the very least interaction amongst indigenous stem borers. Inter and intra specific interactions among the communities of borers, cannibalism also plays an important role in the displacement of larvae. Further there is need be study under laboratory condition on the cannibalism rate between intra and inter species pest complex of sorghum crops.

References

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How to cite this article

Jatin, K., S.P.S. Tomar, Sathish Kota, Suraj Mishra and Jagdish Jaba* (2022). Comparative Studies on the Competitive Displacement of major Indigenous pests of Sorghum in Relation to Invasive Alien pest Fall Armyworm, Spodoptera frugiperda. Biological For