Premium
Integrated management of B romus diandrus in dryland cereal fields under no‐till
Author(s) -
García A L,
RoyoEsnal A,
Torra J,
CanteroMartinez C,
Recasens J
Publication year - 2014
Publication title -
weed research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.693
H-Index - 74
eISSN - 1365-3180
pISSN - 0043-1737
DOI - 10.1111/wre.12088
Subject(s) - sowing , agronomy , biology , weed , weed control , cultural control , crop
Summary As herbicides have limited effect in controlling B romus diandrus in no‐till dryland cereal fields, the integration of chemical and cultural methods needs to be investigated. A field study was carried out in L leida ( S pain) during 2008–09, 2009–10 and 2010–11 seasons, in a no‐till winter cereal field integrating delayed crop sowing with herbicides in a barley–wheat–wheat rotation. Three crop sowing dates were considered: D1, mid‐ O ctober; D 2, mid‐ N ovember; and D 3, early D ecember, and the herbicides mesosulfuron‐methyl plus iodosulfuron‐methyl‐sodium were applied in wheat. Weed density, cumulative emergence and fecundity were estimated for each sowing date. In all three seasons, a significant reduction in the cumulative emergence of B . diandrus as compared to D 1 was observed in D 2 (82.0, 97.5 and 98.1%) and D 3 (80.8, 98.7 and 97.2%). In addition, a significant decrease in weed density and seed rain was observed across all sowing dates and seasons. The herbicide used in wheat was more effective under delayed sowing, due to lower weed density and presence of less developed weed seedlings. After three seasons, the populations of B . diandrus were completely depleted in D 2 and D 3. This study demonstrates the possibility of eliminating brome infestations in dryland cereal fields in no‐till systems through the integration of cultural and chemical strategies.