Plant growth and phosphate uptake of two leafy vegetables (Trigonella sp. and Spinacia sp.) as influenced by phosphate solubilizing fungi
DOI:
https://doi.org/10.26832/24566632.2025.100401Keywords:
Biomass, Leafy vegetables, Plant phosphorus, Solubilization index, Titrable acidityAbstract
The present work was focused on improving the growth and phosphate uptake in leafy vegetables by supplying phosphate bioinoculants. A total of 41 isolates from 50 rhizospheric soil samples were isolated through the serial dilution method by Pikovskaya’s medium. Among them 6 PSF with maximum solubilization index (3.08 to 3.86) selected and further evaluated. They showed good results in decreased pH (4.0 to 3.1 from an initial pH of 6.89), titrable acidity (30.16g/L to 38.08g/L), and phosphate concentration in culture broth (60µg to 25µg). Isolate PSF 39 showed maximum plant height (7.8cm at 15 days after sowing and 10.1cm at harvest), root length (5.5cm), biomass (2.11g of fresh weight and 1.01g of dry weight), leafy vegetable weight (2.01g), plant phosphorus uptake (0.393%) and available P in rhizosphere soil (346.96Kg/ha) in Trigonella sp. PSF 38 produced the most plant height (15.7cm at 15 days after sowing and 30.6cm at harvest), root length (10.9cm), biomass (11.23g fresh weight and 3.82g dry weight), leafy vegetable weight (10.32g), plant phosphorus uptake (0.369%) and available P in rhizosphere soil (346.29 Kg/ha) in Spinacia sp. From the results, the PSF inoculants can be recommended as phosphate solubilizers in the agricultural field as able to promote plant growth in leafy vegetables.
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