Akademik Veri Yönetim Sistemi
v“1st International Organic Agriculture and Biodiversity Symposium 27-29 September 2017 Bayburt” “I. Uluslararası Organik Tarım ve Biyoçeşitlilik Sempozyumu 27-29 Eylül Bayburt”, Bayburt, Türkiye, 27 - 29 Eylül 2017, cilt.1, ss.37
Abstract
The objective of this study was to evaluate the effects of seven N2-fixing and/or P-solubilizing and siderophoreproducing microorganism based bio-fertilizers in single and triple strain combinations isolated from the acidic
rhizospheric soil of native tea, grapevine and wild red raspberries. Effect of these bio-fertilizers on chlorophyll
content, macro- and micro-nutrient concentrations and seedling growth of grapevine cv. ‘Italy’ (Vitis vinifera).
was determined.
The experiments were arranged in a completely randomized design of eight treatments (seven bio-fertilizer
treatments and an uninoculated control) and three replicates (each with nine rooted Grafted Grapevine
saplings). Liquid biological fertilizers were applied to the grapevine seedlings in the pot by dipping and injecting
methods. The greenness or total chlorophyll content was measured using non-destructive Minolta chlorophyll
meter SPAD 502 of the 5th and 6th leaves. As a result of this study, bacterial efficiency was found to be variable
and depended on the bacterial strains and evaluated growth parameters. Plant growth-promoting rhizobacteria
(PGPR) has improved macro- and micro-nutrient concentrations in grapevine leaves, and stimulated plant
growth. Triple inoculation and single inoculation based bio fertilizers were found to stimulate overall plant
growth, including shoot and leaf weight, main shoot length, leaf ground index, chlorophyll, nitrogen, zinc and
iron content of grapevine cv ‘Italy’. Bio-fertilizers increased the nutrients such as nitrogen, zinc and iron
concentrations and consequently increased the chlorophyll content of the leaves.