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

Grant number: 15/22748-2
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): May 01, 2016
Effective date (End): February 28, 2018
Field of knowledge:Agronomical Sciences - Agronomy
Principal Investigator:Pedro Luis da Costa Aguiar Alves
Grantee:Juciléia Irian dos Santos
Home 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. Aumento da concentração de CO2 atmosférico e seus efeitos na interação planta daninhacultura da soja. 2018. Doctoral Thesis - Universidade Estadual Paulista "Júlio de Mesquita Filho" Faculdade de Ciências Agrárias e Veterinárias..

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