Awnless barley (Hordeum vulgare L.) response to hand weeding and 2,4-D application at two growth stages under Mediterranean environment
2002
Turk, Munir A. | Tawaha, Abdel Rahman M.
A field study was conducted to determine the response of two awnless barley genotypes (JF//Barsoy/Ri and VA 92-42-46) to hand weeding (practised monthly during the growing seasons) and 2,4-D application at different growth stages during the rainy seasons of 1999 and 2000 at Houfa in northern Jordan. JF//Barsoy/Ri gave significantly higher grain yield than VA 92-42-46; 820 and 923 kg ha−1 during 1999 and 2000, respectively. Differences in weed number and fresh weight were significant among various treatments in both seasons. In both growing seasons, yield reductions occurred when 2,4-D was applied to barley at the stage 11–18 of BBCH scale (leaves 1 to 8 unfolded) and the stage 22–28 (2–8 tillers detectable). Hand weeding proved the best weed control and was more effective than 2,4-D applications.
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