Soyben manganese and phosphorus nutrition as affected by glyphosate

• Grant number: 08/07034-0
• Support Opportunities: Regular Research Grants
• Start date: February 01, 2009
• End date: January 31, 2011
• Field of knowledge: Agronomical Sciences - Agronomy - Crop Science
• Principal Investigator: Ciro Antonio Rosolem
• Grantee: Ciro Antonio Rosolem
• Host Institution: Faculdade de Ciências Agronômicas (FCA). Universidade Estadual Paulista (UNESP). Campus de Botucatu. Botucatu , SP, Brazil

Abstract

There evidence that glyphosate can interfere in soybean manganese and phophorus absorption/redistribution. Hence, use of glyphosate as a weed-killer on soybeans, even in transgenic varieties (RR- round up ready), may affect current recommendations of Mn and P fertilization. Four experiments will be conducted to study the effects of glyphosate on P and Mn absorption kinetics, on soybean response to Mn and on P and Mn partioning in the plant. The experiments will be conducted in greenhouse, using nutrient solutions and in pots with soil. The experiment 4 corresponds to an undergraduate project (fellowship) supported by FAPESP (Proc. 06/52321-1). (AU)