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Tipo de Documento: Revista
Autor : Ibarra López, Rosa Elena
Chávez Navarrete, Eduardo F.
Pico Rosado, Jimmy T.
Subía García, Cristian R.
Margenot, Andrew J.
Título : Soil nitrogen cycling under contrasting management systems in Amazon Coffea canephora agroecosystems
Palabras clave : Robusta;Leguminous;aminopeptidases;Coffea arabica
Fecha de publicación : 2021
Páginas: 37p.
Estación: E. E. Central Amazónica
Resumen : Robusta coffee (Coffea canephora) is well suited to the humid tropical climate of the Amazon basin and is produced in contrasting low input agroforestry systems and intensively managed monocultures that differ in nitrogen (N) constraints on productivity. We evaluated indicators of soil N cycling and coffee plant N sufficiency using a full factorial of two input managements (organic vs conventional forms) and the absence or presence of the interplanted leguminous tree (LT) Erythrina spp in a replicated Robusta coffee field trial in the Ecuadorian Amazon. Activities of soil protease, three aminopeptidases, N-acetyl-β-Dglucosaminidase, cellobiohydrolase and β-glucosidase were evaluated in tandem with soil ammonium (NH4-N) and nitrate (NO3-N), potentially mineralizable nitrogen (PMN), permanganate oxidizable carbon (POXC), as well as coffee leaf N, leaf N: phosphorus ratio (N:P), and yield. LT decreased soil enzyme activities, PMN, and extractable NH4-N, as well as leaf N and leaf N:P.
Citación : Rosa Elena Ibarra López1,2, Eduardo F. Chávez Navarrete3, Jimmy T. Pico Rosado4, Cristian R. Subía García4, Andrew J. Margenot2*
URI : http://repositorio.iniap.gob.ec/handle/41000/5841
Aparece en las colecciones: Artículos de Revistas EECA

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