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Pastos y Forrajes

versión impresa ISSN 0864-0394versión On-line ISSN 2078-8452

Resumen

PENTON-FERNANDEZ, Gertrudis; MARTIN-MARTIN, Giraldo Jesús; MILERA-RODRIGUEZ, Milagros de la Caridad  y  PRIETO-ABREU, Marlene. Agroproductive effect of silkworm rearing waste as biofertilizer in two forage species. Pastos y Forrajes [online]. 2018, vol.41, n.2, pp.114-122. ISSN 0864-0394.

The objective of the study was to evaluate the agroproductive effect of silkworm rearing waste as biofertilizer, combined with earthworm humus and solid ferment of native microorganisms (NM) on Brachiaria hybrid cv. Yacare and Mucuna pruriens. Two trials were conducted: in the first one low doses of biofertilizer in Brachiaria hybrid cv. Yacare were studied; and, from the results, in the second experiment the biofertilizer doses were increased, silkworm rearing waste alone was included and M. pruriens was used. The experimental design was randomized blocks with 15 replicas. The height of cv. Yacare at 30 days tended to be higher in the treatments with biofertilizer. At 60 days all the treatments differed from the control, and silkworm rearing waste + NM surpassed silkworm rearing waste + humus. The production of seeds and dry biomass in silkworm rearing waste + NM (1,25 and 11,33 g, respectively) was higher than in the other combinations and the control (0,62 and 5,65 g). In M. pruriens the emission of branches stood out when applying silkworm rearing waste alone and silkworm rearing waste + humus. The length of the main branch in the control (41,19 cm) differed at 45 days with regards to that of all the fertilized plots (between 82,37 and 92,39 cm). In silkworm rearing waste + NM, with or without humus, the best characteristics of the root system were found at 75 days. It is concluded that the use of biofertilizers obtained from silkworm rearing waste and their combination with NM and humus constitute efficacious practices to improve the agroproductive indicators of B. hybrid cv. Yacare and M. pruriens.

Palabras clave : Brachiaria hybrid cv. Yacare; silkworm; humus; Mucuna pruriens.

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