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<p>Declining soil health and nutrient imbalance in continuous rice-wheat systems threaten wheat productivity and profitability. A two-year (2021-22 and 2022-23) field experiment was conducted in a split-plot design to evaluate the combined effects of wheat genotypes and plant growth promoters (PGPs) on growth, physiology, and yield under semi-arid conditions. Treatments comprised three wheat genotypes (DBW-187, K-1006, and K-607) and five plant growth promoter (PGP) options: control (no PGP), chelated micronutrients (0.5%), seaweed extract applied as granules (25&#xa0;kg ha<sup>− 1</sup>) and liquid (3000 ppm), gibberellic acid (2000 ppm), and nitrobenzene (3000 ppm). DBW-187 exhibited superior growth and yield attributes, with higher tiller number (~ 20%), dry matter accumulation (~ 18%), chlorophyll content, and grain yield (~ 13%) over other genotypes. Chelated micronutrients enhanced growth parameters and yield (grain + 20.2%, straw + 9.4%) compared with the control. Seaweed extract and gibberellic acid produced comparable improvements. The combination of DBW-187 with chelated micronutrients achieved the highest production and economic efficiency. Integrating high-yielding genotypes with suitable PGPs and balanced fertilization offers a promising strategy for improving wheat productivity and sustainability in agri-food systems.</p>

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Plant Growth Promoters and Genotype: Strategies to Enhance Growth, Productivity and Profitability of Wheat in Semi-Arid Ecologies of India

  • 期刊论文

  • 发表日期：

    2025年12月23日

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  • Sunil Kumar Prajapati,
  • V. K. Verma,
  • Dinesh Kumar,
  • Sandeep Gawdiya,
  • Shivendra Singh,
  • Gurwaan Singh,
  • Nausad Khan,
  • M. Z. Siddique,
  • Nilutpal Saikia,
  • Sk Asraful Ali,
  • Deo Narayan Singh,
  • Shikhar Verma,
  • Mohammad Hasanain,
  • Vijay Singh Meena,
  • Sandeep Kumar,
  • Sanjay Singh Rathore

摘要

Declining soil health and nutrient imbalance in continuous rice-wheat systems threaten wheat productivity and profitability. A two-year (2021-22 and 2022-23) field experiment was conducted in a split-plot design to evaluate the combined effects of wheat genotypes and plant growth promoters (PGPs) on growth, physiology, and yield under semi-arid conditions. Treatments comprised three wheat genotypes (DBW-187, K-1006, and K-607) and five plant growth promoter (PGP) options: control (no PGP), chelated micronutrients (0.5%), seaweed extract applied as granules (25 kg ha− 1) and liquid (3000 ppm), gibberellic acid (2000 ppm), and nitrobenzene (3000 ppm). DBW-187 exhibited superior growth and yield attributes, with higher tiller number (~ 20%), dry matter accumulation (~ 18%), chlorophyll content, and grain yield (~ 13%) over other genotypes. Chelated micronutrients enhanced growth parameters and yield (grain + 20.2%, straw + 9.4%) compared with the control. Seaweed extract and gibberellic acid produced comparable improvements. The combination of DBW-187 with chelated micronutrients achieved the highest production and economic efficiency. Integrating high-yielding genotypes with suitable PGPs and balanced fertilization offers a promising strategy for improving wheat productivity and sustainability in agri-food systems.