Publication Date
1985
Location
Kyoto Japan
Description
Following introduction into Colombia in 1973, Andropogon gayanus CIAT 621 has been evaluated within various countries by many institutions and researchers. Between 1981-1985 it has achieved the status of a cultivar by a formal release process within Colombia, Brazil, Panama, Peru and Venezuela as Carimagua 1, Planaltina, Veranero, San Martin and Sabanero, respectively. The release process evolved independently in each country. The decision to release was taken by a single institution, except in the case of Panama. Each country elected to give a different name to an equivalent cultivar. Ample supplies of basic seed generally were made available, especially in Brazil, and were widely distributed both to seed enterprises and graziers. This has favoured both the rapid initiation of a supply of commercial seed and a progressive decline in price. Effective release has been achieved in 2 years from the decision to release. Adoption has been favoured by: the natural attraction of graziers to a new grass species; good dry season regrowth; high carrying capacity; good adaptation to acid, infertile, high aluminum soils; and tolerance to spittlebug. Weaknesses recorded include: more demanding grazing management; low seedling vigor; and low and variable seed quality. Future research efforts should include; definition of role in rainforest ecosystems; association with legume species; seed quality assessment; and the development of improved cultivars.
Citation
Ferguson, J E.; Sere, C; and Vera, R R., "The Release Process and Initial Adoption of Andropogon gayanus in Tropical Latin America" (1985). IGC Proceedings (1985-2023). 10.
(URL: https://uknowledge.uky.edu/igc/1985/ses2/10)
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
The Release Process and Initial Adoption of Andropogon gayanus in Tropical Latin America
Kyoto Japan
Following introduction into Colombia in 1973, Andropogon gayanus CIAT 621 has been evaluated within various countries by many institutions and researchers. Between 1981-1985 it has achieved the status of a cultivar by a formal release process within Colombia, Brazil, Panama, Peru and Venezuela as Carimagua 1, Planaltina, Veranero, San Martin and Sabanero, respectively. The release process evolved independently in each country. The decision to release was taken by a single institution, except in the case of Panama. Each country elected to give a different name to an equivalent cultivar. Ample supplies of basic seed generally were made available, especially in Brazil, and were widely distributed both to seed enterprises and graziers. This has favoured both the rapid initiation of a supply of commercial seed and a progressive decline in price. Effective release has been achieved in 2 years from the decision to release. Adoption has been favoured by: the natural attraction of graziers to a new grass species; good dry season regrowth; high carrying capacity; good adaptation to acid, infertile, high aluminum soils; and tolerance to spittlebug. Weaknesses recorded include: more demanding grazing management; low seedling vigor; and low and variable seed quality. Future research efforts should include; definition of role in rainforest ecosystems; association with legume species; seed quality assessment; and the development of improved cultivars.
