Resumo

MORENO, F  e  GUERRERO, A. Evaluation of four propagation methods in field of Trichanthera gigantea and establishment costs for protein bank. Rev. Fac. Agron. [online]. 2005, vol.22, n.1, pp.13-22. ISSN 0378-7818.

Yatago (Trichanthera gigantea) is a specie with wide potential for the production of forages and as conservative of basins. However, the establishment is limited for high costs. In this sense, this investigation consisted on the evaluation of the effects of four propagation methods in field of T. gigantea with the purpose of analyzing some characteristics for the propagation, establishment and costs, in MOPREVATS UNET, San Cristóbal, Táchira state. The propagation methods were evaluated: T1: Nursery plants in plastic bags, T2: Stakes to naked root, T3: Direct propagation of a stake and T4: Direct propagation of two stakes and three repetitions and three repetitions.120 days after the sowing, the variables % of survival, number of buds, forage fresh weight and dry weight, and % of dry matter for treatment were measured. The establishment costs were analyzed. The % of survival did not present differences among the treatments (p = 0.933), while the variables number of buds, fresh weight, dry weight, and % of dry matter presented differences (p = 0.000). An economic evaluation with these results was carried out, being determined that the method of direct propagation of a stake for point reduced the costs in 22.3 %.

Palavras-chave : Trichanthera gigantea; vegetative propagation; protein banks.