Abstract
Abstract
Background
The present study was conducted to evaluate the efficacy of some eco-friendly management modules based on plant oils and Metarhizium anisopliae against a biennial white grub species, Lepidiota mansueta Burmeister (Coleoptera: Scarabaeidae) infesting potato crop in the farmer’s field at Majuli river island, Assam, India.
Results
Amongst all the modules evaluated against L. mansueta grubs, the pooled analysis of two years of data (2019–2020 and 2020–2021) revealed that Module-VI [presowing treatment of mustard oil cake @ 150 kg/ha + wood ash @ 150 kg/ha + panchagavya @ 3% plus the application of Metarhizium anisopliae @ 10 g/sq.m after 1st & 2nd earthing up (25 & 60 Days after Sowing (DAS))] and Module-III [presowing treatment plus soil drenching with jatropha oil @ 5 ml/lit after 1st & 2nd earthing up (25 & 60 DAS)] were significantly superior and statistically at par over the rest of the modules in recording high yield (122.71 and 121.50 q/ha, respectively), minimum per cent tuber damage on weight basis (11.32 and 11.82%, respectively) and number basis (14.07 and 14.78%, respectively). The maximum benefit cost ratio was recorded in Module-VI, followed by Module-III and Module- II.
Conclusion
All the management modules were effective, however, Module-VI and Module-III were found to be significantly superior and registered the least tuber damage on weight and number basis and the highest tuber yield compared to other modules.
Publisher
Springer Science and Business Media LLC
Subject
Insect Science,Plant Science,Agronomy and Crop Science,Ecology
Reference22 articles.
1. Behie SW, Bidochka MJ (2014) Nutrient transfer in plant-fungal symbioses. Trends Plant Sci 19(11):734–740
2. Bhattacharyya B, Pujari D (2014) Field evaluation of Beauveria brongniartii and Metarhizium anisopliae against white grubs damaging green gram in Assam. Int J Plant Prot 7(1):67–70
3. Bhattacharyya B, Pujari D, Bhuyan U, Handique G, Baruah AALH, Dutta SK, Tanaka S (2015) Seasonal life cycle and biology of Lepidiota mansueta (Coleoptera: Scarabaeidae): a serious root-feeding pest in India. Appl Entomol and Zool 50(4):435–442
4. Devi EB (2018) Population monitoring and management of red ant, Dorylus orientalis Westwood (Hymenoptera: Formicidae). Ph.D. Thesis. Assam Agricultural University, Jorhat, Assam
5. Faria MR, Wraight SP (2007) Mycoinsecticides and mycoacaricides: a comprehensive list with worldwide coverage and international classification of formulation types. Biol Control 43(3):237–256