Efecto de tres dosis de trichoderma en la producción primaria de Medicago sativa (Alfalfa) en la granja Guaslán MAGAP

Abstract

In the “Guaslán “farm, that belongs to Ministry for Agriculture, Stockbreeding, Aquaculture and fisheries, located in Riobamba Canton, Province of Chimborazo, Ecuador, it was evaluated the effect of three doses of Trichoderma cepa HARZIANUM (2,5; 5,5 y 7,5), versus a control treatment (TO), in the forage production of Medicago sativa (ALFALFA). To development of 20 researches experimental units were used with a dimension of 40 m2 and 5 repetitions, giving a total area of 800 m2, which were distributed under a block design, completely random. In evaluating three consecutive cuts, the best production averages recorded using 7,5 cc/L of Trichoderma (T3), in alfalfa, the phonological stage to pre-flowering to the (31 days), basal coverage (91,14%), air coverage (100%), plant height (67,88 cm), number of leaves per stem (11,64), number of steams per plant (26,94), green fodder production (26,05 t/ha/cut), dry matter (7,25 t/ha/cut). The compositional analysis reached protein level of 29,03% and fiber of 24,36%. It was obtained a benefit/cost of 2,20. It was recommended to apply Trichoderma in dosses of 7,5 cc/L/ha, as it increases production of fodder and ensuring greater economic returns.