Herbicides applied to green sugarcane: mobility and selectivity

• Grant number: 05/04547-8
• Support Opportunities: Regular Research Grants
• Start date: November 01, 2006
• End date: October 31, 2008
• Field of knowledge: Agronomical Sciences - Agronomy - Crop Science
• Principal Investigator: Patrícia Andrea Monquero
• Grantee: Patrícia Andrea Monquero
• Host Institution: Centro de Ciências Agrárias (CCA). Universidade Federal de São Carlos (UFSCAR). Araras , SP, Brazil

Abstract

Sugarcane cultivation absorbs huge amounts of labor and inputs in its production cycle. Within the inputs, herbicides represent around 56 per cent of the volume sold in the country. Inhibitors of acetolactate synthase and photosynthesis inhibitors are herbicides widely used because of their low toxicity to animals, high selectivity for crops, for their efficiency and broad spectrum of control of harmful plants. However, with the actual tendency to increase areas of sugarcane harvested without prior burning, the handling of harmful plants is experiencing significant changes, necessitating greater study with respect to herbicides which adapt to this type of harvesting. Therefore, this research will analyze mobility through different quantities of sugarcane straw and the lixiviation of the herbicides tryfloxysulphuron + ametryn, imazapic, imazapyr and diuron+hexazinone and will study the selectivity of the herbicides trifloxysulfuron-sodium + ametryn, trifloxysulfuron-sodium + ametryn + diuron+hexazinone, diuron+hexazinone, diuron+hexazinone + ametryn and ametryn in different strains of sugarcane. (AU)