CARBON BALANCE IN ORGANIC CONILON COFFEE INTERCROPPED WITH TREE SPECIES AND BANANA
ABSTRACT Over the last decade, conilon coffee (Coffea canephora) in consortium with wood trees has been established to improve environmental conditions. Little is known about how individual wood trees and banana affect soil quality when intercropped with conilon coffee. The objective of the present...
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| Published in: | Revista árvore Vol. 44 |
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| Main Authors: | , , , , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
Sociedade de Investigações Florestais
01-01-2020
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| Subjects: | |
| Online Access: | Get full text |
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| Summary: | ABSTRACT Over the last decade, conilon coffee (Coffea canephora) in consortium with wood trees has been established to improve environmental conditions. Little is known about how individual wood trees and banana affect soil quality when intercropped with conilon coffee. The objective of the present study was to evaluate the impacts of intercropping organic conilon coffee with different wood tree species and banana on C balance. Five cultivation systems including conilon coffee monoculture and intercropped with Inga edulis, Gliricidia sepium, BRS Japira banana (Musa sp.), or Bactris gasipaes were studied in a randomized complete block design, with four replicates at the south of Espírito Santo State, Brazil. A primary forest fragment adjacent to the experiment was also evaluated for comparison with the consortium. Samples of topsoil (0 to 10 cm) were collected in 2016 to evaluate the total organic C and total N. Soil temperature and moisture at 0 to 5 cm depth and the CO2 emission were measured monthly over one year. The species planted with the conilon coffee promoted a 5.52% decrease in the soil temperature and a 17% increase in the soil moisture content. They also promoted an increase in annual C balance, especially intercropped with Gliricidia and Inga (4.70 and 3.56 Mg ha-1, respectively), with a substantial increase in the soil total organic C and total N in both systems.
RESUMO Na última década, o café conilon (Coffea canephora) em consórcio com árvores foi estabelecido para melhorar as condições ambientais. Pouco se sabe sobre como o cultivo de árvores e de banana afetam a qualidade do solo quando consorciados com café conilon. O objetivo do presente estudo foi avaliar os impactos do consórcio de café conilon orgânico com diferentes espécies arbóreas e banana no balanço de C. Cinco sistemas de cultivo, incluindo monocultura de café conilon e consorciados com Inga edulis, Gliricidia sepium, banana BRS Japira (Musa sp.) ou Bactris gasipaes foram estudados em delineamento de blocos ao acaso, com quatro repetições no sul do Espírito Santo, Brasil. Um fragmento de floresta primária adjacente ao experimento foi avaliado para comparação com o consórcio. Amostras superficiais de solo (0 a 10 cm) foram coletadas em 2016 para avaliar o C orgânico total e o N total. A temperatura e umidade do solo de 0 a 5 cm de profundidade e a emissão de CO2 foram medidas mensalmente ao longo de um ano. As espécies plantadas com o café conilon promoveram redução de 5,52% na temperatura do solo e aumento de 17% no teor de umidade do solo. Também promoveu aumento no balanço anual de C, consorciado especialmente com Gliricidia e Inga (4,70 e 3,56 Mg ha-1, respectivamente), com aumento substancial no C orgânico total do solo e N total nos dois sistemas. |
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| ISSN: | 0100-6762 1806-9088 1806-9088 |
| DOI: | 10.1590/1806-908820200000021 |