Period: Jan 2010 to Dec 2012
Collaborators: URCAMP and IRGA
Funding source: CNPq – Edital 42/2009
Rice is one of major crops produced in southernmost regions of Brazil. Rice brown spot affects both yield and grain quality. The disease is seed-transmitted and can develop to severe levels when conditions such as poor soils and weather are favorable. The role of seedbornde inoculum is not well understoond for the conditions of southern Brazil.
In this project we aimed at evaluating the impact of seeding rice seed lots with increasing levels of B. oryzae incidence on the crop stand, disease intensity and yield assessed in field experiments conducted over three years. In addition, assessment methods were developed to to improve accuracy and reliability of severity estimations in field experiments.