期刊
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
卷 319, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.agee.2021.107538
关键词
Agroforestry systems; Associational defense; Coffee leaf miner; Coffee berry borer; Ecosystem servicesInga edulis
资金
- National Council for Scientific and Technological Development (CNPq)
- Minas Gerais Research Foundation (FAPEMIG) of Brazil
- Coordination for the Improvement of Higher Education Personnel (CAPES)
Research shows that introducing leguminous trees bearing extrafloral nectaries in agroecosystems can enhance coffee production and improve natural control of coffee pests, reducing damage caused by pests.
Plant diversification is a strategy for pest management in agroecosystems. However, a major hurdle in the adoption of this management practice by farmers is related to doubts concerning its effects on crop productivity. Here we assess coffee production and natural control of coffee pests in the presence or absence of leguminous trees bearing extrafloral nectaries (Inga edulis). We compared coffee yield, coffee damage caused by coffee leaf miners (Leucoptera coffeella) and coffee berry borers (Hypothenemus hampei) and parasitism and predation of coffee leaf miners in a replicated field experiment. To evaluate the effect of proximity of the nectar source on natural control, we also assessed pest control and production along transects of 50 m extending from the Inga trees. Production per coffee plant was equal in both systems but coffee fruits were heavier in coffee consorted with Inga trees. In the most productive year, coffee production was higher on plants closer to the Inga trees. Damage caused by coffee leaf miners and coffee berry borers was lower in coffee with Inga trees and increased with distance from the trees. Parasitism of coffee leaf miners and predation by wasps did not increase in coffee consorted with Inga, neither decreased with distance from the trees. Therefore, Inga trees enhanced coffee production and increased natural control of coffee pests.
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