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Awnless barley ( Hordeum vulgare L.) response to hand weeding and 2,4‐D application at two growth stages under Mediterranean environment *
Author(s) -
TURK MUNIR A.,
TAWAHA ABDEL RAHMAN M.
Publication year - 2002
Publication title -
weed biology and management
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 36
eISSN - 1445-6664
pISSN - 1444-6162
DOI - 10.1046/j.1445-6664.2002.00064.x
Subject(s) - biology , weed , hordeum vulgare , agronomy , mediterranean climate , weed control , yield (engineering) , grain yield , horticulture , poaceae , ecology , materials science , metallurgy
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.