Year: 2018
Type: article
Abstract: The field trials were conducted during two winter wheat growing seasons (2013-2014 and 2014-2015, respectively) to estimate grass weed control with pre-emergence (PRE-EM) pre- mixes in winter wheat crop. Both sites were naturally infested with a high population of Avena ludoviciana Dur., Apera spica-venti (L.) P. Beauv., Milium vernale M. Bieb. and Alopecurus myosuroides Huds. The efficacy of pre-emergence (PRE-EM) herbicides varied among weed species, treatments, periods of efficacy estimation, regions and years, respectively. The overall performance of the PRE-EM herbicide premixes was correlated with the weather conditions. All PRE-EM herbicide premixes effectively reduced Apera spica-venti and Milium vernale at the Bitola region in 2013-2014, but not in 2014-2015, due to heavy rain (68 mm) during the 1st and 2nd week following the herbicide applications. Contrary to this, the limited precipitation after the PRE-EM application may have contributed to the poor performance of PRE-EM herbicides in controlling A. myosuroides in the Probištip region in 2013. Control of A. myosuroides improved in 2014-2015, because the Probištip region received enough precipitation to increase the efficacy of PRE-EM herbicide premixes. Twenty-eight DAA, all PRE-EM applied premixes controlled A. myosuroides between 92 and 100%. The high efficacy in A. myosuroides control was also kept at 150 DAA. PRE-EM herbicide premixes controlled A. ludoviciana poorly (less than 69% and 63% in the Bitola region and no more than 49% and 67% in the Probištip region for both years, respectively), because of the ability of some seeds to germinate from greater depths, dormancy and multiple emerging flushes.
Source: Acta herbologica
Author: Zvonko Pacanoski
Institution: Ss. Cyril and Methodius University in Skopje
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: bronze
OpenAlex ID: W2909627539