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Bioactivation of Legacy Phosphorus in Calcareous Soil and its Impact on Maize Yield.
- Source :
- Agricultural Science Digest; Feb2024, Vol. 44 Issue 1, p47-52, 6p
- Publication Year :
- 2024
-
Abstract
- Background: Over the years, the excessive P fertilizer application to crop fields resulted in the build up of insoluble phosphorus pool in soil known as legacy phosphorus. This represents a vast and largely untapped resource in soil. The current study was conducted to evaluate the potential of some P activators (Phosphorus solubilising bacteria, phytase, humic acid, farmyard manure) on increasing the plant availability of legacy P in calcareous soil. Methods: A field experiment was conducted with maize hybrid COH(M) 6. The P activators were combined and applied along with the different doses of P fertilizer (100%, 75% and 50% soil test dose of single super phosphate). Result: Farmyard Manure (FYM) application with Humic acid (HA) showed the increased Olsen P under 100% and 75% of P application. The phosphorus activation response of FYM+HA applied plots showed a higher value than other treatments. The maize yield and P uptake obtained with FYM and HA were statistically comparable at 100% and 75% soil test dose of P. The findings have illustrated that even the reduced amount of P fertilizer application can support the crop growth due to the release of legacy P if they are applied along with P-activators such as FYM and HA. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 0253150X
- Volume :
- 44
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Agricultural Science Digest
- Publication Type :
- Academic Journal
- Accession number :
- 175842053
- Full Text :
- https://doi.org/10.18805/ag.D-5644