Increase in the atmospheric CO2 and the effects on the interactions between weed and soybeans

• Grant number: 15/22748-2
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: May 01, 2016
• End date: February 28, 2018
• Field of knowledge: Agronomical Sciences - Agronomy
• Principal Investigator: Pedro Luis da Costa Aguiar Alves
• Grantee: Juciléia Irian dos Santos
• Host Institution: Faculdade de Ciências Agrárias e Veterinárias (FCAV). Universidade Estadual Paulista (UNESP). Campus de Jaboticabal. Jaboticabal , SP, Brazil

Abstract

Until the end of XXI century, the projections of climate change based on emissions greenhouse gases predict increase of CO2 atmospheric to 750 ppm. If these predictions come true, meaningful alterations will happen on the plant development and field crops. On this situation, there will be increase in the growth and crops yield with photosynthetic metabolism C3, however the weed will be also favorable and thus will change the interaction between weed and crops. Due this changes and to predict those changes and develop the best management strategies is necessary to know the plants behavior and biochemistry changes like, metabolism and enzymatic activate. Based on that, the goal of the present study is (a) evaluate the effect of CO2 atmospheric increase on the interaction between weed (E. heterophylla - C3 and A. viridis - C4) and soybeans, related this with the competition ability (absorption of nutrients) and allelopathic ability each species; (b) evaluate the plants metabolism on differents CO2 concentration, with respect to photosynthesis and activity antioxidant enzymes. (AU)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

SANTOS, Juciléia Irian dos. Increase of atmosphere co2 concentration and its effects on weeds/soybeans interaction. 2018. Doctoral Thesis - Universidade Estadual Paulista (Unesp). Faculdade de Ciências Agrárias e Veterinárias. Jaboticabal Jaboticabal.