Abstract
Lack of large sized suitable demonstration trials has prevented the adoption of improved pasture establishment technology at farm level in Ucayali. The aim of this experiment was to demonstrate the benefits of the mechanized pasture seeding and, particularly, the need for P fertilization and chemical weed control. The effect of three establishment treatments were evaluated using commercial size land areas. The treatments were: (A) conventional mechanized establishment, (B) conventional mechanized establishment plus P fertilization and (C) conventional mechanized establishment plus P fertilization plus chemical weed control, on seedling emergence, height and cover growth and dry biomass accumulation of a Brachiaria brizantha - Centrosema macrocarpum pasture. Unexpectedly, the effects of P fertilization and control weed with glyphosate were non significant, yet, in some cases, treatment (C) performed poorer. Seedling emergence for all treatments was notably poor, probably due to a low quality seed, insect carrying or runoff losses. Even though, the B. brizantha - C. macrocarpum pasture accumulated dry biomass representing 30% of the total vegetation in a 189 day period.
| Original language | English |
|---|---|
| Pages (from-to) | 92-99 |
| Number of pages | 8 |
| Journal | Revista de Investigaciones Veterinarias del Peru |
| Volume | 15 |
| Issue number | 2 |
| State | Published - 2004 |
Bibliographical note
Funding Information:Resultados de investigación de la Esta- ción Experimental del Instituto Veterinario de Investigaciones Tropicales y de Altura (IVITA) y de otras instituciones, como el Centro Internacional de Agricultura Tropical (CIAT) y el Instituto Nacional de Investiga-ción Agraria (INIA), han mostrado que es posible un establecimiento exitoso, en un tiem-po razonablemente corto, con semilla botáni-ca y bajo una combinación óptima de facto-res de suelo, clima y competencia con la ve-getación nativa. Así, para el establecimiento mecanizado de pasturas del género Brachiaria es particularmente necesaria la fertilización con P, K y S (Ara y Ordóñez, 1993; CIAT, 1988) y un efectivo control de la vegetación nativa mediante el uso de herbici-das como glyphosato (Vela et al., 1990; Campos, 1990).
Publisher Copyright:
© 2004 Sociedad de Obstetricia y Ginecologia de Venezuela. All rights reserved.
Keywords
- Brachiaria brizantha
- Establishment
- P fertilization
- Ucayali
- Weed control