Soil nutrient availability and CO2 production in agroforestry systems after the addition of Erythrina poeppigiana pruning residues and native microbial inocula

Payan-Zelaya Fidel, Harmand Jean-Michel, Flores-Macías Antonio, Beer John, Ramos-Espinoza Guadalupe, De Léon González Fernando. 2013. Soil nutrient availability and CO2 production in agroforestry systems after the addition of Erythrina poeppigiana pruning residues and native microbial inocula. Agroforestry Systems, 87 (2) : 439-450.

Quartile : Q2, Sujet : FORESTRY / Quartile : Q2, Sujet : AGRONOMY

Résumé : To investigate the effects of microbial inocula and Erythrina poeppigiana pruning residues on soil K, NO3-, and NH4? concentrations, a greenhouse trial, a field experiment in an organic farm, and three in vitro tests were conducted. Under controlled conditions, weak, temporary effects (10 %) on maize seedling growth were observed on poor soils (taken from the 10-20 cm layer) in the first 2 weeks after application. Positive effects of pruning residue applications on soil K levels (0.09 cmol kg-1, on average) were detected in both the field and greenhouse study. However, significant effects due to the addition of microbial inocula on soil K concentrations were not detected in the field; thus, microbial applications were ineffective at enhancing nutrient availability under field conditions. In contrast, in the in vitro experiments, CO2 production was 31 % greater than that of untreated soil on the 8th and 15th days of incubation. These results highlight the importance of adding tree pruning residues to support coffee-plant nutrition. Experimental outcome data could be valuable for further studies focused on microbial application dosage and timing.

Mots-clés Agrovoc : Coffea, agroforesterie, Erythrina poeppigiana, déchet agricole, taille, agriculture biologique, disponibilité d'élément nutritif, dioxyde de carbone, fertilité du sol, flore du sol, flore microbienne, émission atmosphérique

Mots-clés géographiques Agrovoc : Costa Rica

Classification Agris : F08 - Systèmes et modes de culture
K10 - Production forestière
P33 - Chimie et physique du sol
P35 - Fertilité du sol
Q70 - Traitement des déchets agricoles
P34 - Biologie du sol

Champ stratégique Cirad : Axe 1 (2005-2013) - Intensification écologique

Auteurs et affiliations

• Payan-Zelaya Fidel, Universidad Autonoma Metropolitana (MEX)
• Harmand Jean-Michel, CIRAD-PERSYST-UMR Eco&Sols (FRA) ORCID: 0000-0002-8065-106X
• Flores-Macías Antonio, Universidad Autonoma Metropolitana (MEX)
• Beer John, CATIE (CRI)
• Ramos-Espinoza Guadalupe, Universidad Autonoma Metropolitana (MEX)
• De Léon González Fernando, Universidad Autonoma Metropolitana (MEX)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/568851/)

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