Effect of microbiologically enriched fertilizers on the vegetative growth of strawberry plants under field conditions in the first year of plantation
Journal Title: Journal of Research and Applications in Agricultural Engineering (ISSN 1642-686X) - Year 2019, Vol 64, Issue 2
Abstract
The experiment was established in the spring of 2018 in the Experimental Orchard of the Research Institute of Horticulture in Dąbrowice (Central Poland). It was conducted on strawberry plants of the cultivar ‘Marmolada’. The experiment included the following experimental combinations: 1. Control – no fertilizer; 2. Standard NPK fertilization (control); 3. Control with fungi only (Aspergillus niger and Purpureocillium lilacinum); 4. Control with bacteria only (Bacillus sp., Bacillus amyloliquefaciens and Paenibacillus polymyxa); 5. Standard NPK + fungi; 6. Standard NPK + bacteria; 7. Polifoska 6 innovative fertilizer 100% + bacteria; 8. Urea 100% + fungi; 9. Polifoska 6 100% + bacteria; 10. Super Fos Dar 40 innovative fertilizer 100% + bacteria; 11. Urea 60% + fungi; 12. Polifoska 6 60% + bacteria; 13. Super Fos Dar 40 60% + bacteria; 14. Polifoska 6 100% without bacteria; 15. Urea 100% without fungi; 16. Super Fos Dar 40 100% without bacteria. In the middle of the summer, the surface area of the leaves, the intensity of the green colour of the leaves, and the concentration of macro- and microelements in them were measured. In the autumn, the runners were cut off, and their number, fresh weight and length, and the number and fresh weight of the runner plants were determined. Urea, in combination with fungi, had the greatest influence on the fresh weight of the leaves and their surface area. The applied fertilization treatments did not cause any changes in the intensity of the green colour of the leaves. Under the influence of the applied microbiologically enriched fertilizers and the microorganisms added to the soil on their own, the mineral composition of the leaves changed. In the groups of macro- and microelements, the fertilizers Super Fos Dar 40 and Polifoska 6 enriched with bacteria caused an increase in the levels of the elements analyzed. Urea enriched with strains of filamentous fungi produced a similar effect. In the first year of running the plantation, the largest number and weight of runners were formed by the strawberry plants fertilized with a full dose of Urea. The use of the bacterial mixture had a very beneficial influence on the number and length of runners and the quality of runner plants. In 2018, fruiting was not evaluated because all the inflorescences were removed in order to intensify the vegetative growth of the plants.
Authors and Affiliations
Lidia Sas Paszt, Beata Sumorok, Edyta Derkowska, Paweł Trzciński, Anna Lisek, Zygmut S. Grzyb, Mirosław Sitarek, Michał Przybył, Mateusz Frąc
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