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Insect Pest Incidence with the System of Rice Intensification: Results of a Multi-Location Study and a Meta-Analysis

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Title Insect Pest Incidence with the System of Rice Intensification: Results of a Multi-Location Study and a Meta-Analysis
 
Creator Padmavathi Chintalapati, Santosha Rathod, Naganna Repalle, Nadimpalli Rama Gopala Varma, Kolandhaivelu Karthikeyan, Sanjay Sharma, Rapolu Mahender Kumar and Gururaj Katti
 
Subject Oryza sativa L.; cultivar; multi-location trials; insect pests; pest prevalence; pest damage; grain yield; pest resistance; System of Rice Intensification
 
Description Not Available
The System of Rice Intensification (SRI) developed in Madagascar has spread to many parts
of the world, including India. This study assessing insect pest prevalence on rice grown with SRI vs.
conventional methods at multiple locations in India was prompted by reports that SRI-managed rice
plants are healthier and more resistant to pest and disease damage. Field experiments were conducted
under the All-India Coordinated Rice Improvement Project over a 5-year period. The split-plot design
assessed both cultivation methods and different cultivars, hybrids and improved varieties. Across the
eight locations, SRI methods of cultivation showed a lower incidence of stem borer, planthoppers, and
gall midge compared to conventional methods. Whorl maggots and thrips, on the other hand, were
observed to be higher. Grain yield was significantly higher with SRI management across all locations.
Higher ash, cellulose, hemicellulose, as well as silica content in rice plants under SRI management
could explain at least in part the SRI plants’ resistance to pest damage. Analysis of guild composition
revealed that in SRI plots, there were more natural enemies (insect predators and parasitoids) present
and fewer crop pests (phytophages). A meta-analysis that considered other published research on
this subject revealed a lower incidence of dead hearts, white ear-heads, and leaf folders, along with
higher grain yield, in SRI plots.
Not Available
 
Date 2024-01-18T17:09:29Z
2024-01-18T17:09:29Z
2023-04-12
 
Type Research Paper
 
Identifier Chintalapati, P.; Rathod, S.; Repalle, N.; Varma, N.R.G.; Karthikeyan, K.; Sharma, S.; Kumar, R.M.; Katti, G. Insect Pest Incidence with the System of Rice Intensification: Results of a Multi-Location Study and a Meta-Analysis. Agronomy 2023, 13, 1100. https://doi.org/10.3390/ agronomy13041100
2073-4395
http://krishi.icar.gov.in/jspui/handle/123456789/81269
 
Language English
 
Relation Not Available;
 
Publisher MDPI, Switzerland