Landscape structure influences natural pest suppression in a rice agroecosystem
Abstract Agricultural landscapes are constantly changing as farmers adopt new production practices and respond to changing environmental conditions. Some of these changes alter landscape structure with impacts on natural pest control, pesticide use, and conservation of biodiversity. In rice agroecos...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-09-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-41786-y |
| _version_ | 1797452555922440192 |
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| author | M. P. Ali Gemma Clemente-Orta M. M. M. Kabir S. S. Haque M. Biswas Douglas A. Landis |
| author_facet | M. P. Ali Gemma Clemente-Orta M. M. M. Kabir S. S. Haque M. Biswas Douglas A. Landis |
| author_sort | M. P. Ali |
| collection | DOAJ |
| description | Abstract Agricultural landscapes are constantly changing as farmers adopt new production practices and respond to changing environmental conditions. Some of these changes alter landscape structure with impacts on natural pest control, pesticide use, and conservation of biodiversity. In rice agroecosystems the effect of landscape structure on natural enemies and pest suppression is often poorly understood. Here we investigate the effect of landscape composition and configuration on a key pest of rice, the brown planthopper (Nilaparvata lugens). Using N. lugens as sentinel prey coupled with predator exclusions, we investigated landscape effects on herbivore suppression and rice grain yield at multiple spatial scales in two regions of Bangladesh. Ladybird beetles and spiders were the most abundant natural enemies of N. lugens with landscape effects observed at all scales on ladybird beetles. Specifically, ladybird beetles were positively influenced by road edges, and fallow land, while spiders were strongly influenced only by rice phenology. Predator exclusion cages showed that N. lugens abundance significantly increased in caged plots, reducing rice gain yield. We also used an estimated biocontrol service index that showed a significant positive relationship with landscape diversity and a significant negative impact on pest density and yield loss. These results suggest that promoting fallow lands and fragmented patches between rice fields could lead to more sustainable insect pest management in rice agroecosystems, potentially reducing the practice of prophylactic insecticide use. |
| first_indexed | 2024-03-09T15:10:23Z |
| format | Article |
| id | doaj.art-0221e368e2d3477c9e6c98380be55cab |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-03-09T15:10:23Z |
| publishDate | 2023-09-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-0221e368e2d3477c9e6c98380be55cab2023-11-26T13:22:21ZengNature PortfolioScientific Reports2045-23222023-09-0113111110.1038/s41598-023-41786-yLandscape structure influences natural pest suppression in a rice agroecosystemM. P. Ali0Gemma Clemente-Orta1M. M. M. Kabir2S. S. Haque3M. Biswas4Douglas A. Landis5Entomology Division, Bangladesh Rice Research Institute (BRRI)Department of Crop and Forest Sciences, AGROTECNIO Center, University of LleidaEntomology Division, Bangladesh Rice Research Institute (BRRI)Entomology Division, Bangladesh Rice Research Institute (BRRI)Department of Geography, Presidency UniversityDepartment of Entomology, Michigan State UniversityAbstract Agricultural landscapes are constantly changing as farmers adopt new production practices and respond to changing environmental conditions. Some of these changes alter landscape structure with impacts on natural pest control, pesticide use, and conservation of biodiversity. In rice agroecosystems the effect of landscape structure on natural enemies and pest suppression is often poorly understood. Here we investigate the effect of landscape composition and configuration on a key pest of rice, the brown planthopper (Nilaparvata lugens). Using N. lugens as sentinel prey coupled with predator exclusions, we investigated landscape effects on herbivore suppression and rice grain yield at multiple spatial scales in two regions of Bangladesh. Ladybird beetles and spiders were the most abundant natural enemies of N. lugens with landscape effects observed at all scales on ladybird beetles. Specifically, ladybird beetles were positively influenced by road edges, and fallow land, while spiders were strongly influenced only by rice phenology. Predator exclusion cages showed that N. lugens abundance significantly increased in caged plots, reducing rice gain yield. We also used an estimated biocontrol service index that showed a significant positive relationship with landscape diversity and a significant negative impact on pest density and yield loss. These results suggest that promoting fallow lands and fragmented patches between rice fields could lead to more sustainable insect pest management in rice agroecosystems, potentially reducing the practice of prophylactic insecticide use.https://doi.org/10.1038/s41598-023-41786-y |
| spellingShingle | M. P. Ali Gemma Clemente-Orta M. M. M. Kabir S. S. Haque M. Biswas Douglas A. Landis Landscape structure influences natural pest suppression in a rice agroecosystem Scientific Reports |
| title | Landscape structure influences natural pest suppression in a rice agroecosystem |
| title_full | Landscape structure influences natural pest suppression in a rice agroecosystem |
| title_fullStr | Landscape structure influences natural pest suppression in a rice agroecosystem |
| title_full_unstemmed | Landscape structure influences natural pest suppression in a rice agroecosystem |
| title_short | Landscape structure influences natural pest suppression in a rice agroecosystem |
| title_sort | landscape structure influences natural pest suppression in a rice agroecosystem |
| url | https://doi.org/10.1038/s41598-023-41786-y |
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