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Tillage System Effects on Competition between Barley and Sterile Oat
Author(s) -
Dhima K.,
Vasilakoglou I.,
Lithourgidis A.,
Papadopoulou S.,
Eleftherohorinos I.
Publication year - 2006
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj2005.0289
Subject(s) - hordeum vulgare , avena , agronomy , cultivar , tillage , biology , avena fatua , poaceae , growing season , yield (engineering) , weed , materials science , metallurgy
The short‐term effect of three tillage systems [minimum (MT), reduced (RT), and conventional (CT)] on growth and yield components of two six‐row barley ( Hordeum vulgare L. cv. ‘Athinaida’ and ‘Plaisant’) in presence or absence of sterile oat ( Avena sterilis L.) was studied in northern Greece during the 2003–2004 (Yr 1) and 2004–2005 (Yr 2) growing seasons. Sterile oat was controlled using a postemergence (POST) application of imazamethabenz {(±)‐2‐[4,5‐dihydro‐4‐methyl‐4‐(1‐methylethyl)‐5‐oxo‐1 H ‐imidazol‐2‐yl]‐4(and 5)‐methylbenzoic acid (3:2)} at the early tillering stage of barley. The competitive ability of both barley cultivars against sterile oat was similar. Sterile oat total fresh weight and stem number were less in CT compared to those in RT and MT in Yr 1, a wet growing season, but were greater in Yr 2, a dry growing season. Barley grain yield was greatest and not affected by tillage in Yr 1 whereas in Yr 2, overall yield was lower and MT reduced grain yield by 14% compared to yield in RT and CT treatments. Furthermore, averaged across tillage system and barley cultivar, total weight, ear number, and grain yield of barley grown with sterile oat interference was lower by 10 to 33%, 16 to 45%, and 20 to 38%, respectively, to that of barley grown where sterile oat was controlled. These results indicate that both barley cultivars had satisfactory competitive ability against sterile oat and minimum or reduced tillage systems could be viable as short‐term alternative management systems for barley production.