Efecto de biofertilizantes humus más micorrizas en la producción forrajera de Brachiaria decumbes (Pasto dallis)

Abstract

This research was carried out in Pichincha Province, San Miguel de los Bancos Canton, San Bernabe Sector, in which the agronomic performance of Brachiaria decumbes (Pasto Dallis) was evaluated, by applying different levels of humus: 2, 4, 6, and 8 Tn/ha plus 4 kg/ha of mycorrhizae, compared to a control treatment (T0). 20 experimental units were used with an area of 25 m2 , each with 4 replicates giving a total area of 500 m2 . The distribution of treatments was performed through a complete randomized block desing with four replications. (CRBD). When the results were evaluated, the best performance was achieved, when using 8 Tn/ha of humus more than 4 kg/ha of mycorrhizae in pastures, showing in the first and second cutting the plant height in 30 days (53,40 and 65,85 cm), coverage area during 30 days (91,44 and 91, 06 %), production of green fodder (3,16 and 9,95 Tn/ha/cut), and dry matter production (0,55 to 1,75 Tn/ha/cut) respectively. When using 0 Tn/ha of humus with 4 kg/ha of mycorrhizae in the second replicate, a benefit/cost of 1,24 was obtained; with a profitability of 24%. Thus It is recommended to use 8 Tn/ha of humus with 4 kg/ha of mycorrhizae, because their profitabilities were better in the production.