Effect of nitrogen fertilization and shade type in soil quality and nitrogen assimilation in Ecuadorian Amazon Coffea canephora agroecosystems

In the Amazon basin, Robusta (Coffea canephora) is produced in contrasting agroecosystems of low input, shade-based smallholder production, or in intensively managed monoculture plantations that differ in nitrogen (N) availability and productivity. This study aimed to determine whether the shade tre...

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Detalles Bibliográficos
Autor principal:	Ibarra L., Rosa E.
Otros Autores:	Parrado, Carmen
Formato:	Tesis
Lenguaje:	Inglés
Publicado:	Zamorano: Escuela Agrícola Panamericana, 2020. 2020
Materias:	Carbon and nitrogen dynamic Enzymatic activities N-mineralizing Shade-based
Acceso en línea:	https://bdigital.zamorano.edu/handle/11036/6770

id	ZAMORANO6770
record_format	dspace
spelling	ZAMORANO67702023-03-24T15:36:58Z Effect of nitrogen fertilization and shade type in soil quality and nitrogen assimilation in Ecuadorian Amazon Coffea canephora agroecosystems Ibarra L., Rosa E. Parrado, Carmen Margenot, Andrew Carbon and nitrogen dynamic Enzymatic activities N-mineralizing Shade-based In the Amazon basin, Robusta (Coffea canephora) is produced in contrasting agroecosystems of low input, shade-based smallholder production, or in intensively managed monoculture plantations that differ in nitrogen (N) availability and productivity. This study aimed to determine whether the shade trees and proper addition of N-fertilizer in coffee plantations may provide soil fertility benefits and contribute to soil quality and crop productivity. Full sun had a positive effect on enzyme activities, potentially mineralizable N (PMN), available ammonium (NH4-N), leaf %N and leaf N:P. Enzyme activities as well as NH4-N were greater under low input, whereas high input yielded greater PMN, leaf N and leaf N:P. Protease was positively associated with PMN (R = 0.60, P = 0.003) but unrelated to the activities of the aminopeptidases, and carbon (C) mineralizing enzymes. Permanganate oxidizable C (POXC) and nitrate (NO3-N) were similar across input and shade managements but more variable under shade relative to full sun. Low input offers limited improvements in soil N cycling increasing by 53% the enzymatic activity and N availability by 31% relative to high input under Robusta coffee production in this region. Whereas, high input improves PMN and Robusta N uptake (Leaf N). Relatively lower response in enzymatic activities, C and N stocks, and leaf N under shade management suggests that although it is a common smallholder practice in this region, leguminous tree-based agroforestry may not close N needs of Robusta as effectively as higher N inputs. 2020-11-25T15:05:46Z 2020-11-25T15:05:46Z 2020 Thesis https://bdigital.zamorano.edu/handle/11036/6770 eng 27 p. Copyright Escuela Agrícola Panamericana, Zamorano, 2020 http://creativecommons.org/licenses/by-nc-nd/3.0/es openAccess application/pdf application/pdf Zamorano Zamorano: Escuela Agrícola Panamericana, 2020.
institution	Universidad Zamorano
collection	Biblioteca Digital Zamorano
language	Inglés
topic	Carbon and nitrogen dynamic Enzymatic activities N-mineralizing Shade-based
spellingShingle	Carbon and nitrogen dynamic Enzymatic activities N-mineralizing Shade-based Ibarra L., Rosa E. Effect of nitrogen fertilization and shade type in soil quality and nitrogen assimilation in Ecuadorian Amazon Coffea canephora agroecosystems
description	In the Amazon basin, Robusta (Coffea canephora) is produced in contrasting agroecosystems of low input, shade-based smallholder production, or in intensively managed monoculture plantations that differ in nitrogen (N) availability and productivity. This study aimed to determine whether the shade trees and proper addition of N-fertilizer in coffee plantations may provide soil fertility benefits and contribute to soil quality and crop productivity. Full sun had a positive effect on enzyme activities, potentially mineralizable N (PMN), available ammonium (NH4-N), leaf %N and leaf N:P. Enzyme activities as well as NH4-N were greater under low input, whereas high input yielded greater PMN, leaf N and leaf N:P. Protease was positively associated with PMN (R = 0.60, P = 0.003) but unrelated to the activities of the aminopeptidases, and carbon (C) mineralizing enzymes. Permanganate oxidizable C (POXC) and nitrate (NO3-N) were similar across input and shade managements but more variable under shade relative to full sun. Low input offers limited improvements in soil N cycling increasing by 53% the enzymatic activity and N availability by 31% relative to high input under Robusta coffee production in this region. Whereas, high input improves PMN and Robusta N uptake (Leaf N). Relatively lower response in enzymatic activities, C and N stocks, and leaf N under shade management suggests that although it is a common smallholder practice in this region, leguminous tree-based agroforestry may not close N needs of Robusta as effectively as higher N inputs.
author2	Parrado, Carmen
author_facet	Parrado, Carmen Ibarra L., Rosa E.
format	Tesis
author	Ibarra L., Rosa E.
author_sort	Ibarra L., Rosa E.
title	Effect of nitrogen fertilization and shade type in soil quality and nitrogen assimilation in Ecuadorian Amazon Coffea canephora agroecosystems
title_short	Effect of nitrogen fertilization and shade type in soil quality and nitrogen assimilation in Ecuadorian Amazon Coffea canephora agroecosystems
title_full	Effect of nitrogen fertilization and shade type in soil quality and nitrogen assimilation in Ecuadorian Amazon Coffea canephora agroecosystems
title_fullStr	Effect of nitrogen fertilization and shade type in soil quality and nitrogen assimilation in Ecuadorian Amazon Coffea canephora agroecosystems
title_full_unstemmed	Effect of nitrogen fertilization and shade type in soil quality and nitrogen assimilation in Ecuadorian Amazon Coffea canephora agroecosystems
title_sort	effect of nitrogen fertilization and shade type in soil quality and nitrogen assimilation in ecuadorian amazon coffea canephora agroecosystems
publisher	Zamorano: Escuela Agrícola Panamericana, 2020.
publishDate	2020
url	https://bdigital.zamorano.edu/handle/11036/6770
work_keys_str_mv	AT ibarralrosae effectofnitrogenfertilizationandshadetypeinsoilqualityandnitrogenassimilationinecuadorianamazoncoffeacanephoraagroecosystems
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Effect of nitrogen fertilization and shade type in soil quality and nitrogen assimilation in Ecuadorian Amazon Coffea canephora agroecosystems

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