In order to determine the critical peroid of weed control (CPWC) in grain maize, a field study was conducted
in 2008 in Agricultural Research Station of Esfahan province using a randomized complete block design with 12
treatments and three replications. The treatments consisted of two different periods of weed interference, a
critical weed-free period and a critical time of weed removal were imposed at V3, V6, V9, V12, and R1 (based on
phenological stages of corn development) with a weedy check and a weed-free check. The CPWC was
determined by fitting non-linear regression models of logistic and gompertz equations to the data in range of 2.5,
5, 10 and 15% of acceptable yield loss levels. The CPWC was from 1- to 13-leaf stage (2-54 DAE), 3- to 11-leaf
stage (10-46 DAE), 5- to 8-leaf stage (20-35 DAE) and 6-leaf stage (27 DAE) in Esfahan condition to prevent
yield losses of 2.5%, 5% , 10% and 15% respectively.
Alizadeh, R. , Tareghiyan, M. R. , Mahmoodi, S. , & Tabatabai, R. (2011). Critical Period of Weed Control in Corn (Zea mays L.). Iranian Journal of Field Crops Research, 9(4), 591-597. doi: 10.22067/gsc.v9i4.13220
MLA
R Alizadeh; M. R Tareghiyan; S Mahmoodi; R Tabatabai. "Critical Period of Weed Control in Corn (Zea mays L.)", Iranian Journal of Field Crops Research, 9, 4, 2011, 591-597. doi: 10.22067/gsc.v9i4.13220
HARVARD
Alizadeh, R., Tareghiyan, M. R., Mahmoodi, S., Tabatabai, R. (2011). 'Critical Period of Weed Control in Corn (Zea mays L.)', Iranian Journal of Field Crops Research, 9(4), pp. 591-597. doi: 10.22067/gsc.v9i4.13220
CHICAGO
R. Alizadeh , M. R. Tareghiyan , S. Mahmoodi and R. Tabatabai, "Critical Period of Weed Control in Corn (Zea mays L.)," Iranian Journal of Field Crops Research, 9 4 (2011): 591-597, doi: 10.22067/gsc.v9i4.13220
VANCOUVER
Alizadeh, R., Tareghiyan, M. R., Mahmoodi, S., Tabatabai, R. Critical Period of Weed Control in Corn (Zea mays L.). Iranian Journal of Field Crops Research, 2011; 9(4): 591-597. doi: 10.22067/gsc.v9i4.13220
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