Published in Scientific Papers. Series A. Agronomy, Vol. LXI, Issue 1
Written by Anyo MITKOV, Mariyan YANEV, Nesho NESHEV, Tonyo TONEV
Maize (Zea mays L.) is main grain, forage and strategical field crop in Bulgaria. One of the main negative factors for maize growing is the weeds. The aim of our study conducted in 2016 and 2017 is to evaluate the biological efficacy of some soil herbicides at maize hybrid P 1114. The experiment was stated on the experimental field of the base for training and implementation of the Agricultural University of Plovdiv, Bulgaria. The trial was conducted by the randomized block design in 4 replications, and the efficacy was recorded by the 10 score visual scale of EWRS. The herbicides Merlin® Duo (37.5 g/l isoxaflutole + 375 g/l terbutilazin), Adengo® 465 SC (225 g/l isoxaflutole + 90 g/l thiecarbazone-methyl + 150 g/l cyprosulfamide - antidote), Lumax® 538 SK (37.5 g/l mesotrione + 375 g/l smetolachlor + 125 g/l terbutilazine) were examined. The herbicides were applied after sowing before germination of the crop (ВВСН 00). The highest herbicide efficacy and the highest yields (11.86 t ha-1) were obtained for the treatment with Merlin® Duo at rate of 2000 ml ha-1. All evaluated herbicides were selective for the grown maize hybrid.
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