Danos em trigo causados pela infecção de Pyricularia grisea

By A. Goulart, Paulo Gervini Sousa, A. S. Urashima. 2007

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This work was carried out in order to quantify the damages in wheat yield due to natural infection by Pyricularia grisea, (causal agent of wheat blast), in different wheat cultivars and breeding lines, during 2004 crop season, at Dourados county, Mato Grosso do Sul State in the absence of other diseases. The experiments were developed under natural conditions and without fungicide spraying, in experimental plots located at Embrapa Agropecuaria Oeste and Indapolis. After heading stage, all spikes that showed the characteristic blast symptoms (black point infection in the rachis), had been identified and marked in an area of the 1m 2 . The blast and healthy spikes were harvested, counted and threshed separately. The damages were calculated based on the difference between the actual yield and the estimated yield potential. The results showed that the damages and

Subfields: Plant Science

View Paper: https://www.semanticscholar.org/paper/738ed8c9219d666603fc40770a3000a7ee324d8d