Original scientific paper
https://doi.org/10.5513/JCEA01/24.1.3668
Photosynthetic performance and productivity of maize (Zea mays L.), exposed to simulated drift of imazamox and subsequent therapy application with protein hydrolysates
Dobrinka BALABANOVA
; Agricultural University of Plovdiv, Department of Plant Physiology, Biochemistry and Genetics, Plovdiv 4000, 12 Mendeleev str, Bulgaria
Nesho NESHEV
; Agricultural University of Plovdiv, Department of Agriculture and Herbology, Plovdiv 4000, 12 Mendeleev, Bulgaria
Mariyan YANEV
; Agricultural University of Plovdiv, Department of Agriculture and Herbology, Plovdiv 4000, 12 Mendeleev, Bulgaria
Lyubka KOLEVA-VALKOVA
; Agricultural University of Plovdiv, Department of Plant Physiology, Biochemistry and Genetics, Plovdiv 4000, 12 Mendeleev str, Bulgaria
Andon VASSILEV
; Agricultural University of Plovdiv, Department of Plant Physiology, Biochemistry and Genetics, Plovdiv 4000, 12 Mendeleev str, Bulgaria
Abstract
The use of herbicides is а traditional method for weed control in crop-producing systems. Along with the high effective weed control, herbicides might cause phytotoxicity for crop plants, due to insufficient herbicide selectivity, combining herbicide treatment with unsuitable meteorological conditions, long-term persistence of herbicide in the soil or off-target transfer of the herbicide – drift. Imazamox is a selective herbicide of imidazolinone group, used to control annual and perennial weeds in imidazolinone-resistant (IMI-R) crops. Protein hydrolysates (PHs) are a group of plant biostimulants containing small peptides and free amino acids, reported to ameliorate plant abiotic stress tolerance, including herbicide phytotoxicity. This report evaluates the damaging effect of simulated imazamox drift on growth, photosynthetic performance and productivity of maize plants as well as the efficiency of foliar application by protein hydrolysates as therapy means. The received results demonstrated that the simulated imazamox herbicide drift has a strong inhibiting effect on maize plants. This is well illustrated by the retarded growth of maize plants, their disrupted photosynthetic activity and productivity losses. The foliar supply of PHs to imazamox damaged maize plants ameliorates their photosynthetic performance, growth and crop productivity.
Keywords
plant biostimulants; protein hydrolysates; imazamox; herbicide drift; maize; photosynthesis
Hrčak ID:
296726
URI
Publication date:
29.3.2023.
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