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Effects of biologicals on shallot yield and quality
 
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1
Department of Horticulture and Storage of Crop Products State Biotechnological University 44 Alchevskykh Str., Kharkiv, 61000, Ukraine
 
2
Department of Ecology and Biotechnologies in Plant Production State Biotechnological University 44 Alchevskykh Str., Kharkiv, 61002, Ukraine
 
3
Laboratory of Breeding of Biennial and Underutilized Crops Institute of Vegetable and Melon Growing of the National Academy of Agrarian Sciences 1 Instytutska Str., Selektsiine Township, 62478, Ukraine
 
4
Engineering and Technological Institute “Biotecknika” 19 Velyka Arnautska Str., Odessa, 65125, Ukraine
 
5
Head of the Vegetable Growing Department Institute of Vegetable and Melon Growing of the National Academy of Agrarian Sciences 1 Instytutska Str., Selektsiine Township, 62478, Ukraine
 
6
Laboratory of Adaptive Vegetable Growing, Storage and Standardization, Institute of Vegetable and Melon Growing of the National Academy of Agrarian Sciences 1 Instytutska Str., Selektsiine Township, 62478, Ukraine
 
7
Laboratory of Adaptive Vegetable Growing, Storage and Standardization Institute of Vegetable and Melon Growing of the National Academy of Agrarian Sciences 1 Instytutska Str., Selektsiine Township, 62478, Ukraine
 
8
Department of Vegetable Growing Uman National Universitу, 1 Instytutska Str., Uman, 20305, Ukraine
 
These authors had equal contribution to this work
 
 
Corresponding author
Veronika Bondarenko   

Department of Horticulture and Storage of Crop Products State Biotechnological University 44 Alchevskykh Str., Kharkiv, 61000, Ukraine
 
 
J. Ecol. Eng. 2025; 26(12)
 
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ABSTRACT
There are very few publications reporting results of studies on effects of biologicals on yields and quality of bulbaceous plants. In view of this, our purpose was to scientifically substantiate effects of biologicals containing bacterial strains of Pseudomonas aureofaciens B-111 (IBM B-7096) and Pseudomonas aureofaciens B-306 (IBM B-7097) as well as spores and mycelium of the fungus Trichoderma viride on the yield and quality of shallot bulbs. To achieve the purpose, we set the following objectives: to investigate biometric parameters of shallot plants depending on biological treatments, to determine the yield and to evaluate the impact of the biologicals on the biochemical composition of bulbs. The biologicals increased in the mean bulb weight by 6–15% and the plant height by 9–15%. The total yield was raised by up to 16.2%. The share of marketable yield was increased by 1.2–7.0%. There was a slight increase in the ascorbic acid content in bulbs (by 3–22%) and a slight decrease in the dry matter content (0.24–1.35%). We also observed a slight decrease in the total sugar content (by 0.16–1.76%, depending on biologicals and shallot cultivars).
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