Interactions between mineral fertilization and arbuscular mycorrhizal fungi improve nursery growth and drought tolerance of Prosopis alba seedlings

Salto, Carla Susana; Sagadin, Monica Beatriz; Luna, Celina Mercedes; Oberschelp, Gustavo Pedro Javier; Harrand, Leonel; Cabello, Marta Noemí
Publication Year
Published version
Prosopis alba Griseb. (algarrobo blanco) is an important tree legume in semiarid regions of South America. Under field conditions, their seedlings are subjected to a wide range of environmental conditions that might produce stress, reducing their survival and/or growth. The aim of this work was to evaluate the combined effect of two native arbuscular mycorrhizal fungi (AMF) inocula and fertilization on growth variables of P. alba seedlings under nursery conditions and after drought stress. P. alba seedlings received different levels of basic fertilization (0%, 25% and 100%) and were inoculated with native AMF isolated from different rainfall regions of Parque Chaqueño Argentino: Colonia Benítez (CB, 1300 mm rainfall) and Padre Lozano (PL, 650 mm rainfall) or a mixture of both inocula (MIX), while the control group remained uninoculated. The combined application of native AMF and fertilization did not affect mycorrhizal colonization but allowed the formation of the different AMF structures. Moreover, when comparing the PL inoculum from a low rainfall region with other treatments, it significantly increased growth and development under nursery conditions and drought stress tolerance in the greenhouse. Therefore, AMF benefits for P. alba were related to inoculum source, being improved by the application of low fertilizer rates. This work supports the development of sustainable P. alba seedlings production and their field establishment under symbiotic conditions with native AMF.
EEA Concordia
Fil: Salto, Carla Susana. INTA. Estación Experimental Agropecuaria Concordia; Argentina
Fil: Sagadin, Monica Beatriz. INTA. Instituto de Fisiología y Recursos Genéticos Vegetales; Argentina
Fil: Luna, Celina Mercedes. INTA. Instituto de Fisiología y Recursos Genéticos Vegetales; Argentina. Consejo de Nacional Investigaciones Científicas y Técnicas; Argentina
Fil: Oberschelp, Gustavo Pedro Javier. INTA. Estación Experimental Agropecuaria Concordia; Argentina
Fil: Harrand, Leonel. INTA. Estación Experimental Agropecuaria Concordia; Argentina
Fil: Cabello, Marta Noemí. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Botánica Spegazzini; Argentina. Comisión de Investigaciones Científicas de la Provincia de Buenos Aires; Argentina
Agroforestry Systems : 1–9 (28 February 2019)
Prosopis Alba
Aplicación de Abonos
Abonos Inorgánicos
Micorrizas Arbusculares
Fertilizer Application
Inorganic Fertilizers
Arbuscular Mycorrhiza
Drought Tolerance
Algarrobo Blanco
Tolerancia a la Sequia
Fertilizantes Minerales
Access level
Restricted access
INTA Digital (INTA)
Instituto Nacional de Tecnología Agropecuaria
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