PJB-2023-362
Enhancing Phosphorus Uptake in Sugarcane: A Critical Evaluation of Humic Acid and Phosphorus Fertilizers' Effectiveness.
Mandana Mirbakhsh
Abstract
Our research delves into the utilization of phosphorus fertilizer and humic acid to boost phosphorus absorption in sugarcane crops in West Azarbaijan, Iran, marked by its alkaline, lime-abundant soils. A greenhouse pot experiment was conducted applying two-fold phosphorus fertilizer and humic acid treatments across two distinct harvest periods. Our results reveals that phosphorus fertilizer application led to a significant increase in total and bioavailable phosphorus in the rhizospheric soil, while phosphatase enzyme activity decreased. Active carbon, an important soil health indicator, exhibited substantial growth under the application of humic acid treatments. Our findings illustrate a significant increase in phosphorus absorption by sugarcane due to the combined application of humic acid and phosphorus fertilizer at both harvest times. Humic acid immersion treatments were more effective than soil applications, suggesting greater influence on root absorption processes. This investigation underlines the feasibility of incorporating humic acid in sugarcane cultivation for improved phosphorus absorption, thereby informing better soil management strategies and promoting sustainable agricultural practices. Further exploration into alternative humic acid application methods and its usage during varied plant growth stages is recommended.
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