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Control of weed barley species in winter wheat with sulfosulfuron at different rates and times of application
Author(s) -
BAGHESTANI MOHAMMAD A.,
ZAND ESKANDAR,
MESGARAN MOHSEN B.,
VEYSSI MOZHGAN,
POURAZR REZA,
MOHAMMADIPOUR MOHAMMAD
Publication year - 2008
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 - 10.1111/j.1445-6664.2008.00294.x
Subject(s) - hordeum vulgare , weed control , biology , hordeum , weed , agronomy , randomized block design , yield (engineering) , crop , horticulture , poaceae , materials science , metallurgy
Field experiments were conducted at five locations in the major wheat production regions of Iran to evaluate the efficacy of sulfosulfuron in controlling weed barley species (including Hordeum spontaneum , Hordeum murinum , Hordeum distichon , and Hordeum vulgare ) in the 2004–2005 and 2005–2006 growing seasons. Sulfosulfuron was applied either postemergence (POST) or preplant‐incorporated (PPI) at 0, 20.25, 30.75, 40.5, 51.0, 60.75 or 71.25 g ai ha −1 to plots arranged in a randomized complete block design with four replications. Sulfosulfuron at the recommended rate (20.25 g ai ha −1 ) failed to provide acceptable control of the weed barley species. However, the level of control increased with the application rate, particularly at rates >51.0 g ai ha −1 . Generally, PPI‐applied sulfosulfuron resulted in markedly greater control levels than those of a POST application and complete control of H. murinum and H. vulgare was achieved with PPI‐applied sulfosulfuron at all rates >20.25 and 30.75 g ai ha −1 , respectively. In most cases, the wheat yield increased with the application rate without any crop injury. The highest yield increase (186%) was obtained with a PPI application of 71.25 g ai ha −1 .