Efficacy of different Chemicals and Neem Products against Fall Army worm, [Spodoptera frugiperda (J. E. Smith)] in Maize (Zea mays L.)

Author: Chekuri Nagesh and Anoorag Rajnikant Tayde

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Abstract

The experiment was conducted at the research plot of the Department of Entomology at Central Research Farm, Sam Higginbottom University of Agriculture Technology and Sciences, Prayagraj during the Rabi season of 2022-2023. The experiment was laid out in a Randomized Block Design (RBD) with three replication, Seven treatments and untreated control were evaluated against, Spodoptera frugiperda i.e., T1 Chlorantraniliprole 18.5% SC@ 0.4ml/lit, T2 Emamectin benzoate 5% SG @0.5g/lit, T3Spinetoram 11.7% SC @0.9ml/lit, T4 Flubendiamide 39.35% SC @0.24ml/lit, T5 Novaluron 10%EC@1.0ml/lit, T6 Neem oil 2% @ 20ml/lit, T7 NSKE 5%@50ml/lit, and Control. The results on Spodoptera frugiperda larvae population after the first and second spray proved that all of the treatments were significantly superior to the control. Among the all treatments, Spinetoram 11.7% SC (3.77), (2.17) was recorded minimum larval population of Spodoptera frugiperda after both sprays followed by, Chlorantraniliprole 18.5% SC (3.95), (2.44), and maximum larval population was recorded in Neem oil @2% (4.86), (3.31), followed by NSKE @ 5% (5.06), (3.51), was found to be least effective but superior over the control. While, the highest yield was obtained from the treatment Spinetoram 11.7%SC (40.10 q/ha) as well as C: B ratio (1:1.83), followed by Chlorantraniliprole 18.5% SC (33.03q/ha), (1:1.74), Emamectin benzoate 5% SG (30.01q/ha), (1:1.73), and Neem oil @ 2% (27.32 q/ha), (1:1.56) respectively, while the lowest grain yield of (26.66 q/ha), (1:1.53) was observed in plot treated with NSKE @5% and the untreated control plot resulted least grain yield (19.49 q/ha), (1:1.16) in comparison to plots treated with different chemicals and neem products. Now a days the fall armyworm was very serious challenging pest in the world.

Keywords

Chemicals, Cost Benefit ratio, Efficacy, Maize, Neem products, Spodoptera frugiperda

Conclusion

From the present investigation, it could be concluded that, among the all treatments Spinetoram 11.7% SC shown most effective in controlling larval population of fall armyworm. Followed by Chlorantraniliprole 18.5% SC and the both insecticides showed best results controlling larval population, followed by Emamectin benzoate 5% SG, Flubendiamide 39.35% SC, Novaluron 10% EC, Neem oil @2% and NSKE @5%. Among the treatments studied Spinetoram 11.7% SC gave the highest yield and cost benefit ratio(40.10 q/ha), (1:1.83), which was followed by Chlorantraniliprole @18.5% SC (33.03 q/ha), (1:1.74), Emamectin benzoate@5% SG (30.01 q/ha), (1:1.73), Flubendiamide @ 39.35% SC (29.90 q/ha),(1:1.61), Novaluron @ 1.0% EC (28.03 q/ha), (1:1.57), and Neem oil @2% (27.32 q/ha), (1:1.56), NSKE @5% (26.66 q/ha), (1:1.53) in field conditions. Respectively as such more trails are required in future to validate the finding.

References

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How to cite this article

Chekuri Nagesh and Anoorag Rajnikant Tayde (2023). Efficacy of different Chemicals and Neem Products against Fall Army worm, [Spodoptera frugiperda (J. E. Smith)] in Maize (Zea mays L.). Biological Forum – An International Journal, 15(6): 432-436.