ORIGINAL RESEARCH article
Front. Sustain. Food Syst.
Sec. Agroecology and Ecosystem Services
Volume 9 - 2025 | doi: 10.3389/fsufs.2025.1583697
This article is part of the Research TopicEnhancing Soil Health and Climate Resilience through Sustainable Agricultural PracticesView all articles
Assessing integrated phosphorus management practices on crop performance and soil-plant phosphorus dynamics under pearl millet-chickpea system in alkaline Fluvisol
Provisionally accepted
Asik Dutta1*
Kali Krishna Hazra1
Chaitanya Prasad Nath1
Narendra Kumar1
Raghavendra Singh2
CHANDRA SEKHAR PRAHARAJ1
Abhik Patra3- 1Indian Institute of Pulses Research (ICAR), Kanpur, India
- 2Indian Institute of Farming Systems Research (ICAR), Modipuram, Uttar Pradesh, India
- 3Krishi Vigyan Kendra, Narkatiaganj, West Champraran, India
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Integrated phosphorus (P) management encompassing both conventional and organic sources is a sustainable option to save synthetic fertilisers without compromising crop productivity. Thus, a three years field (2019-2021) experiment has been conducted to assess the impact of six integrated P-management modules on crop productivity and soil-plant P dynamics under pearl millet-chickpea system in the alkaline Fluvisol of Kanpur. Results showed, productivity of both the crops increased over the years irrespective of treatments and highest chickpea equivalent pearl millet yield was recorded in 100% recommended dose of P (3.90 t ha-1). Nitrate reductase (61% and 26% in pearl millet and chickpea, respectively) and total chlorophyll had significant jump in 60% recommended dose of P + farm yard manure (5 t ha-1) over control. Soluble P fraction surged by 45% (pearl millet) and 18% (chickpea) in 60% recommended dose of P +crop residue (50%)+ P solubilising bacteria over control with efficient utilisation of non-labile inorganic P fractions in both the crops. Higher physiological and internal P use efficiency in control plot indicates efficient use of above ground P under deficiency in both the crops. Correlation study showed grain yield was not significantly interlinked with soil inorganic P fractions in both the crops. Improved physio-chemical condition along with continual nutrient supply and carbon availability lead to significant leap in dehydrogenase (27% in pearl millet and 17% in chickpea) and alkaline phosphatase (27% in pearl millet and 31% in chickpea) in 60% recommended dose of P +crop residue (50%)+ P solubilising bacteria over completely fertilised plots in the end of 3 years. In nutshell it can be inferred that application of 60% recommended dose of P +crop residue (50%)+ P solubilising bacteria along could be an excellent alternative to conventional practices (100% recommended dose of P) certifying higher P-availability and P-use efficacy.
Keywords: chickpea, Nitrate Reductase, Poultry manure, Physiological efficiency, Soil P-fractions, uptake, productivity
Received: 26 Feb 2025; Accepted: 21 Apr 2025.
Copyright: © 2025 Dutta, Hazra, Nath, Kumar, Singh, PRAHARAJ and Patra. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Asik Dutta, Indian Institute of Pulses Research (ICAR), Kanpur, India
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