Plant Microbial Biostimulants as a Promising Tool to Enhance the Productivity and Quality of Carrot Root Crops

Abstract

The interest in studies focused on applying probiotic microorganisms is increasing due to sustainable agriculture development. In this research, we aimed to evaluate the impact of two commercial plant probiotics—ProbioHumus and NaturGel on carrot growth, yield, and quality in organic and nonorganic production systems. The research was carried out under laboratory and field conditions. Plants were treated with probiotics (2 L/ha) at the nine leaves stage. Biometrical measurements and chemical analyses were performed at a maturation stage. The average weight of carrot roots increased by 17 and 20 g in the test variant with ProbioHumus as compared to the control in the organic and nonorganic farms, respectively. Plant microbial biostimulants ProbioHumus and NaturGel had a positive effect on the quality of carrots from organic and nonorganic farms: applied in couple they promoted the accumulation of monosaccharides, ascorbic acid, carotenoids, phenols, and increased antioxidant activity. Quantitative nitrate analysis regardless of the biostimulant used revealed about twofold lower nitrate content of carrots from organic than nonorganic farms, and probiotics did not show a significant effect on nitrate accumulation. Finally, ProbioHumus and NaturGel were effective at low doses. The use of microbial biostimulants can be recommended as an element of cultivation for creating ecologically friendly technologies.

EFFECT OF APPLYING BIO-INPUTS ON PRODUCTION OF HIGH BUSH BLUEBERRY (Vaccinium corymbosum L.) cv. biloxi IN BRAZIL'S FEDERAL DISTRICT

“…Bio-inputs applied were based on bacteria such as Bacillus subtilis, Lactobacillus, Saccharomyces cerevisiae yeast, humic and fulvic acids, among other compounds common to the formulations used in this study's experiments, and administered at low doses of 2L/ha. Besides the increase in carrot weight, a greater accumulation of monosaccharides, carotenoids, and phenols and increased antioxidant activity were also observed (Gavelienė et al 2021).…”

Synergistic impact of nanomaterials and plant probiotics in agriculture: A tale of two-way strategy for long-term sustainability

“…are somewhat synonymous with each other and are part of a complex microbial community that either colonizes the rhizosphere (rhizomicrobiome; Ravichandran et al, 2022 ) or diffuse in or localizes in plant tissues (endophytes; Pandey et al, 2022 ; Rai et al, 2023 ) and contribution to beneficial functional traits in favor of plants ( Gosal et al, 2017 ). These beneficial traits include enhancement in plant growth and productivity ( Gavelienė et al, 2021 ), amelioration of abiotic and biotic stresses in plants ( Santoyo et al, 2021 ), lowering the challenges of climate changes effects ( Fiodor et al, 2021 ), and biofortification benefits via improving micronutrients levels in crop edibles ( Upadhayay et al, 2018 , 2021 , 2022a , b , c ). Plant probiotics must contain some PGP traits such as the solubilization of elements (P, K, and Zn; Singh et al, 2022 ), nitrogen fixation ( Pandey et al, 2022 ), production of phytohormones ( Kurniawan and Chuang, 2022 ) aminocyclopropane-1-carboxylate (ACC) deaminase ( Santos et al, 2022 ; Singh et al, 2022 ), siderophore ( Upadhayay et al, 2022a , b ), and ammonia ( Santos et al, 2022 ).…”

The Influence of Bacteria-Inoculated Mineral Fertilizer on the Productivity and Profitability of Spring Barley Cultivation

“…These microorganisms promote plant growth by converting essential nutrients (mainly nitrogen, phosphorus, and potassium) from non-absorbable to absorbable forms [ 8 , 9 , 10 ]. Several years of research by Gavelienė et al [ 11 ] has shown that microbial biostimulants can have a positive influence not only on yield but also on quality by increasing the amount of nutrients and bioactive compounds present that are beneficial to human health.…”