Resumen

RODRIGUEZ, Iraida; BERTORELLI, María V; GONZALEZ, Socors  y  ARNAL, Eustaquio. Agronomic performance of Brachiaria hybrid cv. Mulato I, at Southern Anzoátegui State, Venezuela. Zootecnia Trop. [online]. 2013, vol.31, n.2, pp.151-158. ISSN 0798-7269.

Research in well-drained savanna grasslands has selected forage materials adaptable to a variety of livestock systems, tolerant to the damage of pests and diseases that affect the productivity and persistence of pastures. These include Mulato I, hybrid of Brachiaria ruziziensis with B. brizantha, introduced in 2002 in INIA-Anzoátegui. In a plot with a year of establishment, an area was demarcated in a randomized complete block design and four replications, to evaluate the effect of age cuts to in 3, 6 and 9 weeks, on dry matter production, land cover, plant height, number of tillers, crude protein and minerals contents (% PC, P, K, Ca and Mg). The higher dry matter production (4448,8 kg MS/ha), with higher crude protein and minerals contents (PC:14,0; P: 0,23; K: 2,85; Ca: 2,80; Mg: 1,57), was obtained with cuts made every 3 weeks. In 2004 severe attacks of a scale identified as Duplachionaspis sp. were recorded, considered as a new pest species for the pasture, observing damages of 100 % from mid-April to early June, decreasing progressively until early July, without compromising the persistence of grass.

Palabras clave : Brachiaria; hybrid, dry matter production; crude protein; minerals; pests.

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