Impact of Long-Term Conservation Agriculture Practices on Phosphorus Dynamics under Maize-Based Cropping Systems in a Sub-Tropical Soil

Over the past decade, scientific studies have increasingly concentrated on effects of global phosphorus (P) scarcity food security. A comprehensive strategy that considers demand reduction and recycling possibilities is needed to address P scarcity. Reduced tillage along with crop residue retention could decrease fixation in soil, improve labile content enhance organic-P (Po) buildup its mineralization by phosphatases; this be an extra benefit conservation agriculture (CA) soils. To study impact long-term CA soil organic inorganic fractions their distribution, a field trial was conducted under maize-based cropping system different (zero (ZT), permanent bed (PB) conventional till (CT) (maize–wheat–mungbean (MWMb), maize–chickpea–sesbania (MCS), maize–mustard–mungbean (MMuMb) maize–maize–sesbania (MMS)). Phosphorus dynamics were studied through sequential fractionation (organic P) at 0–5 5–15 cm depth. The findings showed higher amount soluble loosely bound (SL-P) detected ZT among fractions, whereas iron-bound (Fe-P), aluminum-bound (Al-P), reductant (RES-P) calcium-bound (Ca-P) found CT both depths. Among Organic-P moderately non-labile Po PB but, case Po, it insignificant respect operations. Significant synergistic winter legume (chickpea) summer legumes (sesbania mungbean) rotation observed SL-P, Labile Humic acid-Po, Alkaline phosphatase MBP Given potential relevance understanding for efficient management practices, our offers critical new insight sustainable development.