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Can previous cultivation of grass affect rice rooting depth and nitrogen uptake?

Grant number: 18/12775-0
Support type:Scholarships abroad - Research Internship - Post-doctor
Effective date (Start): September 01, 2018
Effective date (End): December 31, 2018
Field of knowledge:Agronomical Sciences - Agronomy - Soil Science
Principal researcher:Ciro Antonio Rosolem
Grantee:Carlos Antonio Costa Do Nascimento
Supervisor abroad: Adam Price
Home Institution: Faculdade de Ciências Agronômicas (FCA). Universidade Estadual Paulista (UNESP). Campus de Botucatu. Botucatu , SP, Brazil
Research place: University of Aberdeen, Scotland  
Associated to the scholarship:16/12317-7 - Nucleus: a virtual joint centre to deliver enhanced nitrogen use efficiency via an integrated soil-plant systems approach for the UK and Brazil, BP.PD


Growing grasses such as those of the genus Urochloa can improve soil properties leading to both higher N uptake and cash crop yield, but the mechanisms behind these effects remain unclear. However, soil structure improvement seems to have a key role on the process. Thus, U. ruziziensis and U. brizantha will be grown in columns and rhizotrons filled with soil, and rice will be grown thereafter.. X- ray Computed Tomography and Winrhizo will be the tools to evaluate the rice root system and soil structure. In addition, the nitrogen balance in the soil-plant system will be evaluated These evaluations will allow the assessment of both the interaction of roots with soil structure and the effect of grasses on root growth and N uptake by rice.

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