Sammendrag
Teff is a staple and well adapted crop in Ethiopia. Weed competition and control have major
effects on yields and economic returns of the crop in the country. Among the weed management
methods, development and use of weed competitive teff varieties remain the cheapest and most
sustainable weed management option. Ten teff varieties were tested for their weed competitive ability
in two locations. Treatments were applied using a split plot design with three blocks at each location
for two consecutive seasons. Hand weeding and non-weeded treatments were applied to whole
plot treatments with teff varieties assigned as split plots within the whole plot. The main objective
was to determine relative competitive ability among teff varieties. Results showed that teff varieties
showed significant variation in their weed competitive abilities. The varieties ‘Kora’ and ‘DZ-Cr-387’
significantly reduced weed density, dry weight, and cover more than the other teff varieties. They also
had the lowest yield losses with a loss of 6% in biomass yield and 18% in grain yield recorded from
‘Kora’ and a loss of 17% in biomass yield and 21% in grain yield recorded from ‘DZ-Cr-387’. Therefore,
they showed the highest weed competitive ability compared to the other varieties.
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