Fitopatologia Brasileira (2003) 28, 189-192

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Edivan Panisson, Erlei M. Reis and Walter Boller (2003)
Quantificação de danos causados pela giberela em cereais de inverno, na safra 2000, em Passo Fundo, RS
[Assessment of damage caused by head blight in winter cereal crops in the 2000 season, in Passo Fundo county, RS]
Fitopatologia Brasileira 28 (2), 189-192
Abstract: In the last crop seasons, epidemics of head blight (Gibberella zeae) were observed in many crop regions throughout the world. Head blight is considered a floral disease because it affects plants from the anthesis to the soft dough stage. The damage caused by the disease is both quantitative and qualitatively. The objective of this research was to quantify the damage caused by head blight to winter cereal crops. The experiment was carried out in Passo Fundo, in the State of Rio Grande do Sul, with one cultivar of rye (Secale cereale), one of triticale (Triticum x secale), three of barley (Hordeum vulgare), and six of wheat (Triticum aestivum). Spikes were sampled from 75m2-experimental plots managed without fungicides. The methodology of damage quantification simulated real losses from commercial fields harvested with combines. Overall, the head blight damage reached 43,9% (1537 kg.ha-1) on rye, 0,1% (5 kg.ha-1) on triticale, 8,3% (252 kg.ha-1) on barley, and 17,5% (640 kg.ha-1) on wheat. More studies on the disease epidemiology and disease damage are needed to evaluate the viability of chemical control for head blight on barley.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Portuguese)
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Research topic(s) for pests/diseases/weeds:

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Fusarium graminearum Barley (Hordeum vulgare) Brazil (south)
Fusarium graminearum Rye (Secale cereale) Brazil (south)
Fusarium graminearum Wheat (Triticum) Brazil (south)
Fusarium graminearum Triticale (xTriticosecale rimpaui) Brazil (south)