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The study was aimed to decrease the application of mineral fertilizers in the production of triticale-based forage, with the combined use of EcoMic® (arbuscular mycorrhizal fungi) and Fitomas-E®. It was developed on a red Ferralitic leachate soil in the Station of Pastures and Forage Genetics Cattle Company (EPG) "Niña Bonita", Artemisa province. The treatments were: 1. Absolute Control; 2. Application of mineral fertilizers 150, 92 and 120 kg ha-1 of N, P2O5 and K2O; 3. Application of mineral fertilizers 100, 54 and 70 kg ha-1 of N, P2O5 and K2O + EcoMic® (15 kg ha-1) + Fitomas-E® 2 L ha-1. Mycorrhizal variables, the percentage of N, P and K in the leaf tissue and crude protein percentage in forage were analyzed. The dry mass (forage) in kg ha-1. The results showed that a decreased amount of mineral fertilizers did not reduce the quality of the fodder produced, since no significant differences among control treatments production and use of biofertilizer were recorded. Moreover higher percentage intensity and mycorrhizal colonization and the highest number of spores per g-1 soil was recorded. The results showed the establishment of a mycorrhizal association among guest and host. It was recorded savings in production costs with the implementation of these, so it became more profitable to produce forage. [ABSTRACT FROM AUTHOR]

An experiment was conducted on a Red Ferralitic Lixiviated soil in order to assess the contribution of arbuscular mycorrhizal inoculation to reduce phosphorus fertilization in Brachiaria decumbens cv. Basilisk. Doses of 0, 30, 60 and 90 kg P2O5 ha-1 year-1, alone and combined with the inoculation of arbuscular mycorrhizal fungal strain Glomus cubense, previously selected for its high efficiency, were distributed in a randomized block design with 4x2 factorial arrangement and four replications. The experiment was conducted under irrigated conditions and lasted two years. G. cubense significantly increased mycorrhizal colonization percentages, visual density and spore number in the rhizosphere, although the values of those variables decreased with the highest doses of P2O5. In non inoculated treatments, the highest yields and P extractions in the aerial biomass were obtained with doses of 30-90 kg of P2O5 ha-1, with no significant differences between them, but only with the inoculation of G. cubense, during the first year of the establishment of grass both indicators reached values similar to those obtained with phosphoric fertilizer applications without inoculation. The influence of G. cubense was observed until the rainy season of the second year, although fungal variable values, yields and P exports with the aerial biomass indicated a decrease in the effectiveness of inoculation, in relation to the first year. [ABSTRACT FROM AUTHOR]