Development of a program for the management of Elodea densa and Egeria densa in the Jupiá Reservoir

• Grant number: 95/09648-3
• Support Opportunities: Research Grants - Research Partnership for Technological Innovation - PITE
• Duration: January 01, 1997 - June 30, 1998
• Field of knowledge: Agronomical Sciences - Agronomy - Plant Health
• Principal Investigator: Robinson Antonio Pitelli
• Grantee: Robinson Antonio Pitelli
• Host Institution: Faculdade de Ciências Agrárias e Veterinárias (FCAV). Universidade Estadual Paulista (UNESP). Campus de Jaboticabal. Jaboticabal , SP, Brazil
• Host Company: Centrais Elétricas de São Paulo (CESP)
• City: Jaboticabal

Abstract

The high proliferation of the submerged aquatic macrophyte (higher plant) E. densa in the reservoir of the Jupiá Hydroelectric Plant (SP) has caused increasing operational problems for the enterprise. The research aimed to develop techniques that could be used in their control and it developed into three interdependent sub-units. The first corresponded to the identification of the species that occur in the reservoir and to the mapping of their possible ecotypes, using techniques of electrophoresis of isoenzymes and DNA. The second sub-unit corresponded to the work aimed at the development of biological programs for the control of E. densa. Fungi were isolated and one of them proved to be capable of controlling the proliferation of E. densa. In the third sub-unit, the endeavor was to generate the necessary information for the development of control programs with the use of herbicides. An economic and operational analysis of all the treatments with potential use for the control of E. densawas also undertaken. (AU)