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Effects of plant growth promoting rhizobacteria (PGPR) on yield, growth and nutrient contents in organically growing raspberry
Scopus
Toplam 268 atıf DOI
During 2003 and 2005, plant growth promoting effects of two Bacillus strains OSU-142 (N2-fixing) and M3 (N2-fixing and phosphate solubilizing) were tested alone or in combinations on organically grown primocane fruiting raspberry (cv. Heritage) plants in terms of yield, growth, nutrient composition of leaves and variation of soil nutrient element composition in the province of Erzurum, Turkey. The results showed that Bacillus M3 treatment stimulated plant growth and resulted in significant yield increase. Inoculation of raspberry plant roots and rhizosphere with M3 and/or OSU-142 + M3, significantly increased yield (33.9% and 74.9%), cane length (13.6% and 15.0%), number of cluster per cane (25.4% and 28.7%) and number of berries per cane (25.1% and 36.0%) compared with the control, respectively. In addition, N, P and Ca contents of raspberry leaves with OSU-142 + M3 treatment, and Fe and Mn contents of the leaves of raspberry with M3 and OSU-142 + M3 applications significantly improved under organic growing conditions. Bacterial applications also significantly effected soil total N, available P, K, Ca, Mg, Fe, Mn, Zn contents and pH. Available P contents in soil was determined to be increased from 1.55 kg P2O5/da at the beginning of the study to 2.83 kg P2O5/da by OSU-142, to 5.36 kg P2O5/da by M3 and to 4.71 kg P2O5/da by OSU-142 + M3 treatments. The results of this study suggest that Bacillus M3 alone or in combination with Bacillus OSU-142 have the potential to increase the yield, growth and nutrition of raspberry plant under organic growing conditions. © 2006 Elsevier B.V. All rights reserved.
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The Relationship Between High Lime Content, Rhizobacteria, and Antioxidant Enzymes in Blackberry Cultivation
Scopus
Havuzumuzda 3 atıf almış
Calcareous soil makes up 30% of the world’s agriculture land. Horticultural crops, especially fruit trees, are susceptible to calcareous soil. Rootstocks and cultivars that are resistant to lime are used in places where fruit is grown on calcareous soil. Plant growth promoting rhizobacteria (PGPRs) have come into greater use in recent years for improving plant growth conditions such as amending poor soil. This research conducted on plants of the ‘Chester’ and ‘Jumbo’ blackberry cultivars growing in high calcareous soil conditions aimed to investigate how four different PGPR species (Alcaligenes feacalis, Microbacterium esteraromaticum, Rhizobium radiobacter, Kocuria rhizophila) affected levels of hydrogen peroxide (H2O2), malondialdehyde (MDA), antioxidant enzyme activities (Catalase, Peroxidase, Superoxide dismutase). Although there were significant statistical differences between rhizobacteria treatments, blackberry varieties were not statistically significant in all enzymes examined in terms of bacterial applications. T11 treatments had the highest values in catalese (CAT), superoxide dismutase (SOD) and peroxidase (POD) enzymes, both in the general data of blackberry and in the data of varieties. T11 treatment has the highest concentration of CAT (741.51 EU g−1 FT), POD (41,796.76 EU g−1 FT), and SOD (3375.55 EU g−1 FT), whereas T8 has the lowest content of H2O2 (24.51 mmol kg−1 FT) and MDA (12.85 nmol mL−1 FT). A positive and high correlation was detected between H2O2-CAT, H2O2-POD, H2O2-MDA, MDA-POD, MDA-SOD, POD-CAT, and POD-SOD. The results imply that the 637Ca, SY48, and SK63 bacterial strains used in combination can be recommended for use in fruit growing on calcareous soil.
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Kurumlar (1)
Selçuk Üniversitesi
Selçuklu, Turkey