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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Author(s)
Félix Fernández Martín1, Jesus Juarez Molina1, Emilio Nicolás Nicolás2, Juan José Alarcón2, Martín Kirchmair3, Francisco José García1, Antonio José Bernabe Garcia1 and Camille Bernal1
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DOI:10.17265/2161-6264/2017.04.001
Affiliation(s)
1. SYMBORG S.L., Campus de Espinardo 7, Edificio CEEIM, CP, Murcia 30100, Spain
2. CEBAS-CSIC, Campus de Espinardo, CP, Murcia 30100, Spain
3. Universität Innsbruck, Institut für Mikrobiologie, Technikerstr 25, Innsbruck A-6020, Austria
ABSTRACT
Intensive agriculture
contributes to a decrease in microbial biomass and crop yields, while
accelerating soil degradation. Arbuscular
mycorrhizae associations have direct benefits
for plant nutrition, and may be considered a useful tool in modern agriculture.
Notwithstanding the widespread knowledge of these benefits, their use in
intensive farming systems has until now been ineffectual, because most
mycorrhizal species have low tolerance toward high concentrations of nutrients
and are poorly adapted to the soil and/or mycorrhizal functioning. The aim of
this work was to test the efficacy of
an arbuscular mycorrhizal (AM) fungus, Glomus iranicum var. tenuihypharum on lettuce and table
grape crops in different intensive farming systems. The variables studied were root colonization percentage, external mycelium
concentration, gas exchange, photosynthetic
activity, root starch concentration and plant nutrition. The main finding was
that the fungus is tolerant of a wide range of soil pH values, high salinity
levels and abundant external mycelium. In lettuce, it
produced significant increases in plant physiological activity and productivity
(10%-15%); and in table grapes, increases of 12%-45% in yield were
achieved for more than three years in Crimson variety,
and significant increases in fruit cluster weight, color uniformity and
Brix (°Bx). The AM species is protected by two patents and is a
component of MycoUp, MycoUp Activ, Resid
HC and Resid MG, whose commercial application has spread to more
than 30 countries, with increments in crop yields of 8%-45% in lines as varied as leaf vegetables, berries,
fruit, olives, grapes, greenhouse crops and cereals.
KEYWORDS
Arbuscular mycorrhizal, Glomus iranicum var. tenuihypharum, intensive agriculture, gas exchange, root starch concentration, photosynthetic activity.
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