Deepa Gautam
Abstract
In the quest to improve the agronomic effectiveness of Rock Phosphate (RP), a widely available
and cost-effective phosphate fertilizer, this study aimed to overcome its limited solubility by
isolating fungal strains capable of solubilizing rock phosphate. Soil samples were collected
from Garhmukteshwar, Hapur, for the isolation process. Among several isolates, three strains
exhibited the highest rock phosphate solubilization within a seven-day timeframe, coinciding
with a significant decrease in soil pH.
To assess the practical implications of these findings, the bio-fertilizer activity of the identified
isolates was evaluated in natural environmental conditions, specifically on Phaseolus vulgaris
(Common bean). The experimental results demonstrated a significant positive impact on plant
growth when rock phosphate was co-applied with these phosphate solubilizing fungi.
This symbiotic interaction between the fungal strains and rock phosphate not only increased
nutrient availability for the plants but also showcased the potential to enhance overall soil
fertility. These findings contribute valuable insights to sustainable agriculture, emphasizing the
potential of leveraging microbial interactions to optimize the performance of widely used
fertilizers. The significance of this study goes beyond Garhmukteshwar, offering a promising
approach to address the solubility challenges of rock phosphate and enhance its efficacy as a
phosphate fertilizer in various agricultural settings. The identified fungal strains represent a
novel avenue for the development of bio-fertilizers, contributing to more sustainable and
productive agricultural practices.
Keywords: Aspergillus niger, Fungus, Biofertiliser , Phosphate solubilizing, Isolation
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References
1. Henri F, Laurette N, Ghislain N, Vanessa T, Virginie T, Dieudonné N. Rock
phosphate solubilisation by strains of Penicillium spp. isolated from farm and forest
soils of three agro ecological zones of Cameroon. Am. J. Agric. For. 2014;2:25.
2. Sane SA, Mehta SK. Isolation and evaluation of rock phosphate solubilizing fungi
as potential biofertilizer. J Fertil Pestic. 2015;6(2):156-60.
3. Janati W, Mikou K, El Ghadraoui L, Errachidi F. Isolation and characterization of
phosphate solubilizing bacteria naturally colonizing legumes rhizosphere in Morocco.
Frontiers in Microbiology. 2022 Sep 26;13:958300.
4. Wahid OA, Mehana TA. Impact of phosphate-solubilizing fungi on the yield and
phosphorus-uptake by wheat and faba bean plants. Microbiological Research. 2000
Sep 1;155(3):221-7.
5.Latif A, Jilani G, Hayat R, Khan AA, Azeem M, Ehsan M, Mubarak MU. Isolation,
characterization of PSB stains from rock phosphate and their potential as biofertilizer.
International Journal of Biosciences. 2017;10(1):72-80.
6. Zhu HJ, Sun LF, Zhang YF, Zhang XL, Qiao JJ. Conversion of spent mushroom
substrate to biofertilizer using a stress-tolerant phosphate-solubilizing Pichia farinose
FL7. Bioresource technology. 2012 May 1;111:410-6.
7. Wu Y, He Y, Yin H, Chen W, Wang Z, Xu L, Zhang A. Isolation of phosphate-
solubilizing fungus and its application in solubilization of rock phosphates. Pakistan
Journal of Biological Sciences: PJBS. 2012 Dec 1;15(23):1144-51.
8. Saber WI, Ghanem KM, El-Hersh MS. Rock phosphate solubilization by two
isolates of Aspergillus niger and Penicillium sp. and their promotion to mung bean
plants. Research Journal of Microbiology. 2009;4(7):235-50.
9. Vassileva M, Vassilev N, Azcon R. Rock phosphate solubilization by Aspergillus
niger on olive cake-based medium and its further application in a soil–plant system.
World Journal of Microbiology and Biotechnology. 1997 Mar;14:281-4.
10. Morales A, Alvear M, Valenzuela E, Castillo CE, Borie F. Screening, evaluation
and selection ofphosphate-solubilising fungi as potential biofertiliser. Journal of soil
science and plant nutrition. 2011;11(4):89-103.
| Volume | |
| Issue | |
| Received | December 15, 2023 |
| Accepted | December 16, 2023 |
| Published |
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