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EFFECT OF A BIOFERTILIZER ON MYCORRHIZAL INFECTION AND VEGETAL NUTRITION IN A VINEYARD OF MENDOZA EFECTO DE UN BIOFERTILIZANTE EN LA INFECCIÓN MICORRÍCICA Y NUTRICIÓN DE UN VIÑEDO DE MENDOZA
MARTINEZ, Laura Elizabeth1, 2*; VALLONE, Rosana1, 2 1 INTA EEA Mendoza, San Martín 3853, Luján de Cuyo (5507), Mendoza, Argentina UNCuyo Facultad Ciencias Agrarias, Almirante Brown 500, Luján de Cuyo (5507), Mendoza, Argentina 2 * Corresponding author: martinez.laura@inta.gob.ar
Abstract: There are products that contain microorganisms and some are called biofertilizer. These microorganism, when applied in the soil, can live associated with plants, favoring vegetal nutrition and plant health. The objective of this study was to evaluate the effect of the application of a biofertilizer in the mycorrhizal infection and vegetal nutrition in a Malbec vineyard in Mendoza. Under a completely randomized design, two treatments, (with biofertilizer (WB) and without biofertilizer (WOB)) were distributed with eight replicates and a dose 10 L.ha-1. Four applications were made, two during flowering and two after harvest for three years. During flowering, total N, P, K, Ca and Mg were determined in petioles, percentage of mycorrhization in root and number of spores of mycorrhizal fungi in soil. In addition, yield and pruning weight were determined too. The number of large spores was higher (671 spores.100g1soil) in WB soils after four applications. There was no effect on the percentage of mycorrhization (WB: 40.75% and WOB: 29.4%), nutritional levels (N-WB: 0.88% and N-WOB: 0.84%, P-WB: 0.38% and y P-WOB: 0.35%), yield (WB: 1.85 kg.plant-1 and WOB: 1.39 kg.plant-1). These results could be given by high amount of time needed for the efficient radical infection by fungi and subsequent increase in plant nutrition.
Keywords: vine, soil, arid, microorganisms
Abstract: There are products that contain microorganisms and some are called biofertilizer. These microorganism, when applied in the soil, can live associated with plants, favoring vegetal nutrition and plant health. The objective of this study was to evaluate the effect of the application of a biofertilizer in the mycorrhizal infection and vegetal nutrition in a Malbec vineyard in Mendoza. Under a completely randomized design, two treatments, (with biofertilizer (WB) and without biofertilizer (WOB)) were distributed with eight replicates and a dose 10 L.ha-1. Four applications were made, two during flowering and two after harvest for three years. During flowering, total N, P, K, Ca and Mg were determined in petioles, percentage of mycorrhization in root and number of spores of mycorrhizal fungi in soil. In addition, yield and pruning weight were determined too. The number of large spores was higher (671 spores.100g1soil) in WB soils after four applications. There was no effect on the percentage of mycorrhization (WB: 40.75% and WOB: 29.4%), nutritional levels (N-WB: 0.88% and N-WOB: 0.84%, P-WB: 0.38% and y P-WOB: 0.35%), yield (WB: 1.85 kg.plant-1 and WOB: 1.39 kg.plant-1). These results could be given by high amount of time needed for the efficient radical infection by fungi and subsequent increase in plant nutrition.
Keywords: vine, soil, arid, microorganisms