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<p>Lentil introgression into South Asia’s vast monocropped rice fallow systems offers significant potential for sustainable intensification through strategic varietal development with better nutrient uptake efficiency and optimized root-rhizospheric interaction. The present study investigated the genetic variability of root physiological and biochemical traits across diverse lentil genotypes and examined their association with nitrogen (N) and phosphorus (P) acquisition to identify traits driving nutrient uptake efficiency and yield performance. Significant variation was observed among genotypes for root physiology, biochemical traits, and grain yield. Superior lentil genotypes exhibited improved rhizosphere chemistry, characterized by elevated accumulation of allantoin, acid phosphatase and phytase, thereby improving nutrient acquisition. High-yielding lentil genotypes also possessed greater nutrient uptake efficiency, coupled with moderate nutrient translocation. Combining all the parameters, a summation rank index effectively delineated six genotypes, such as L 1112–19, BM8, ILL7978, 2011S 56,234–1, IC559996 and BCL10209, as consistently exhibiting superior adaptability and performance under the rice-fallow system, irrespective of tillage practices. To our knowledge, this is the first report to combine rhizosphere modifications for better nutrient acquisition efficiency and yield potential to delineate elite lentil genotypes for rice-fallow systems. These lentil genotypes hold promise for adoption in monocropped rice fallows, offering a way to more sustainable and remunerative rice-lentil cropping systems, with enhanced productivity, nutritional security, and socio-economic upliftment of South Asian farmers.</p>

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Nutrient Acquisition and Yield Efficiency of Lentil in Contrasting Tillage Practices of Rice Fallow

  • 期刊论文

  • 发表日期：

    2026年2月16日

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  • Shayree Chatterjee,
  • Arpita Das,
  • Sudip Bhattacharya,
  • Soumyayan Roy,
  • Jhuma Datta,
  • Bholanath Saha,
  • Sanjeev Gupta,
  • Shiv Kumar

摘要

Lentil introgression into South Asia’s vast monocropped rice fallow systems offers significant potential for sustainable intensification through strategic varietal development with better nutrient uptake efficiency and optimized root-rhizospheric interaction. The present study investigated the genetic variability of root physiological and biochemical traits across diverse lentil genotypes and examined their association with nitrogen (N) and phosphorus (P) acquisition to identify traits driving nutrient uptake efficiency and yield performance. Significant variation was observed among genotypes for root physiology, biochemical traits, and grain yield. Superior lentil genotypes exhibited improved rhizosphere chemistry, characterized by elevated accumulation of allantoin, acid phosphatase and phytase, thereby improving nutrient acquisition. High-yielding lentil genotypes also possessed greater nutrient uptake efficiency, coupled with moderate nutrient translocation. Combining all the parameters, a summation rank index effectively delineated six genotypes, such as L 1112–19, BM8, ILL7978, 2011S 56,234–1, IC559996 and BCL10209, as consistently exhibiting superior adaptability and performance under the rice-fallow system, irrespective of tillage practices. To our knowledge, this is the first report to combine rhizosphere modifications for better nutrient acquisition efficiency and yield potential to delineate elite lentil genotypes for rice-fallow systems. These lentil genotypes hold promise for adoption in monocropped rice fallows, offering a way to more sustainable and remunerative rice-lentil cropping systems, with enhanced productivity, nutritional security, and socio-economic upliftment of South Asian farmers.