Influence of Microbiologically Enriched Mineral Fertilizers on Selected Groups of Microorganisms in the Rhizosphere of Strawberry Plants

Abstract

In recent years, the use of bio-fertilizers enriched with specially selected microorganisms has been used more and more often. The beneficial effects of bio-fertilizers enriched with consortia of microorganisms on strawberry plants have been reported previously. The purpose of the research was to determine the effect of bio-fertilizers containing selected fungal and bacterial strains on the microorganisms living in the rhizosphere of strawberry plants. In the experiments described in this paper, synthetic mineral fertilizers were enriched with selected microorganisms. The fertilizer urea was enriched with the fungi Aspergillus niger and Purpureocillium lilacinum, while the fertilizers Polifoska 6 and Super Fos Dar 40 with strains of the bacteria Bacillus sp., Bacillus amyloliquefaciens, and Paenibacillus polymyxa. Bacteria and fungi belonging to these species can exert a positive effect on the growth of many plants. The results obtained in this study showed that the application of fertilizers enriched with microorganisms had different effects on the analyzed populations of soil microorganisms in the rhizosphere of strawberry plants. There were evidences of both, an adverse effect of the applied fertilizer and/or microorganisms, but more often, the beneficial effect was found on the abundance of the microorganisms in the rhizosphere of the strawberry. The most effective for the population of Pseudomonas bacteria was application of urea and fungi and Polifoska and bacteria. The highest number of phosphorus utilizing bacteria B was scored in the treatments containing NPK, NPK + fungi and urea 60% + fungi. The application of NPK + fungi and urea 100% + fungi as well as Super Fos Dar with bacteria was most beneficial for population of actinomycetes.

Influence of beneficial soil microorganisms and mineral fertilizers enriched with them on the flowering, fruiting, and physical and chemical parameters of the fruit of three-year-old strawberry plants in field cultivation

“…One of the methods of reducing the amount of fertilizers used to fertilize the soil is to increase their effectiveness by making use of beneficial microorganisms, such as filamentous fungi, arbuscular mycorrhizal fungi (AMF), and also bacteria, which are responsible for improving the growth and physiological condition of plants. These microorganisms are also recommended for the protection of plants against diseases and pests (Sas-Paszt et al 2019a, b, 2020aCanassa et al 2020;Karnwal, Kapoor 2021). There is a belief among producers of agricultural crops that the use of high doses of mineral fertilizers not only harms the environment, but also unnecessarily increases plant production costs and causes eutrophication of surface and ground waters, degradation and pollution of the soil environment, drinking water and air (Boy, Arcand 2013).…”

“…There is a belief among producers of agricultural crops that the use of high doses of mineral fertilizers not only harms the environment, but also unnecessarily increases plant production costs and causes eutrophication of surface and ground waters, degradation and pollution of the soil environment, drinking water and air (Boy, Arcand 2013). An alternative to this is the implementation of modern plant cultivation technologies based on natural raw materials for the production of bio-fertilizers and soil improvers (Sas-Paszt, Głuszek 2019; Grzyb et al 2012a,b;Malusa et al 2013;Derkowska et al 2015;Sas-Paszt et al 2019a, b). The results of many studies from recent years indicate that the use of fertilizers enriched with beneficial strains of bacteria and fungi increases the effectiveness of fertilizers used in plant cultivation (Derkowska et al 2015;Sas-Paszt et al 2019a, b;Delaporte-Quintana et al 2020;Sas-Paszt et al 2020a, b).…”

“…An alternative to this is the implementation of modern plant cultivation technologies based on natural raw materials for the production of bio-fertilizers and soil improvers (Sas-Paszt, Głuszek 2019; Grzyb et al 2012a,b;Malusa et al 2013;Derkowska et al 2015;Sas-Paszt et al 2019a, b). The results of many studies from recent years indicate that the use of fertilizers enriched with beneficial strains of bacteria and fungi increases the effectiveness of fertilizers used in plant cultivation (Derkowska et al 2015;Sas-Paszt et al 2019a, b;Delaporte-Quintana et al 2020;Sas-Paszt et al 2020a, b). Soil microorganisms strengthen the physiological condition of plants and their resistance to biotic and abiotic environmental stresses (Kumar et al 2019b;Abbasi et al 2020;Bilal et al 2020;Liu et al 2020).…”

“…Research studies have proven that the beneficial bacteria of the genus Bacillus, producing compounds that provide phosphorus to plants, the auxin IAA and other plant growth regulators such as cytokinins, have a beneficial effect on plant growth and yielding (Zerrouk et al 2020;de Sousa et al 2021). Benefits of the use of Bacilli and other microbes on strawberry growth and yielding have been observed in other trials (Sas-Paszt et al 2019a, b;Vicente-Hernández et al 2019;Mei et al 2021).…”

The influence of biofertilization on the vegetative growth, yielding and nutritional status of 'Sampion' apple trees in first years after planting

“…Results of numerous experiments have revealed that biofertilizers enriched with arbuscular mycorrhizal fungi and filamentous fungi produce stimulating effects on the growth and reproduction of various plant species (Santhos et al 2018;Sas Paszt et al 2019). Beneficial microorganisms assist the roots in absorbing minerals from the soil and strengthen plant physiology (Mahdi et al 2010;Garima 2019).…”