PGPR Improves Yield of Strawberry Species under Less-Fertilized Conditions

Abstract

Plant growth promoting rhizobacteria (PGPR) is applied as biofertilizer to expect better production potential on commercial crops while keeping sustainability, but their function is dependent on the combination of PGPR and target crops. It has been reported that the application of PGPR in the soil resulted in the increment of strawberry yield, but other reports argue that PGPR has no effect on the yield potential. In addition, it is not clear whether the application timing of PGPR affects in a forcing cultivation system which usually requires transplanting. In this study, responses of diploid wild strawberry (Fragaria vesca) and garden strawberry (F. ananassa Duch.) varieties to PGPR application were examined. Application of PGPR, Bacillus cereus KI-2, during the flower induction increased the total yield and number of fruits in F. vesca 'Hawaii-4', and in garden strawberry 'Hoko-wase'. The application resulted in earlier flowering in 'Hoko-wase' while no difference was observed in 'Tochi-otome'. Sucrose content was also altered in cultivar dependent manner so that it was increased in 'Hawaii-4', while it was decreased in 'Tochi-otome'. These results indicate that PGPR has a potential to improve the yield factors while keeping the quality of the fruits, but the effect is cultivar dependent.

The Effects of Plant Growth-Promoting Bacteria with Biostimulant Features on the Growth of a Local Onion Cultivar and a Commercial Zucchini Variety

“…This is consistent with the earlier flowering time observed in strawberry plants cultivated under reduced fertilization conditions and inoculated with the strain 5Vm1K together with a mixed mycorrhizal inoculum [15]. Similar effects were reported for strawberries after inoculation with the KI-2 strain KI-2 of Bacillus cereus [53]. The process of flowering results from balanced carbon and nutrient requests by the different plant organs [54].…”

Effect of super absorbent polymer and bio fertilization on Maize productivity and soil fertility under drought stress conditions

“…PGPR play an essential role in nutrient cycling in soils, they involved in processes such as oxidation, nitrification, ammonification and nitrogen fixation. Kurokura et al (2017) stated that the formation of organic acids by PGPR contribute in the conversion of undissolvable form of phosphorus to dissolvable one.…”

Mycorrhizal frequency, physiological parameters, and yield of strawberry plants inoculated with endomycorrhizal fungi and rhizosphere bacteria

“…At present, special attention is paid to sustainable and environmentally friendly production. The technologies related to sustainable and ecological production methods ensure high fruit yields of proper quality in terms of taste and nutritional value, while limiting the use of mineral fertilizers and synthetic plant protection agents (Bona et al 2015;Kurokura et al 2017). Owing to the impoverishment of mineral nutrient availability or an increase of soil organic matter of agricultural and horticultural soils as well as replant diseases, there is a need to use bioproducts and beneficial microorganisms (bacteria, mycorrhizal fungi, and filamentous fungi).…”