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<p>The growth and yield of any crop are largely dependent on intercepted photosynthetically active radiation (IPAR), and the efficiency of that crop to convert it into dry matter, i.e. radiation use efficiency (RUE). In this context, two years (2018–2019 and 2019–2020) of field experiments were carried out, to study the seasonal distribution of PAR and its effect on the growth, yield attributes, and RUE of potato var. <i>Kufri Jyoti</i>. Four levels of irrigation with irrigation water depth (IW): cumulative pan evaporation (CPE) (IW: CPE = 0.4, 0.8, 1.2, and 1.6) and three levels of potassium (K<sub>2</sub>O: 100, 150, and 200&#xa0;kg ha<sup>−1</sup>) were applied as the main plot and sub-plot factors respectively in the experiment which was laid out in split-plot design with three replications. Seasonal variation of all components of PAR was studied and RUE was assessed. Furthermore, correlations were established between these variables and various growth and yield parameters. The results revealed that the incident PAR use efficiency (PARUE) varied from 1.12 to 3.31&#xa0;g MJ<sup>−1</sup> in 2018-19 and from 1.58 to 2.53&#xa0;g MJ<sup>−1</sup> in 2019-20 whereas the intercepted PARUE varied from 3.64 to 8.35&#xa0;g MJ<sup>−1</sup> in 2018-19 and from 4.34 to 6.24&#xa0;g MJ<sup>−1</sup> in 2019-20. APAR (%) exerted a positive and highly significant correlation whereas reflected PAR (RPAR) (%) showed a significantly strong negative correlation with the growth and yield of potatoes.</p>

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Photosynthetically Active Radiation Affects the Potato (Solanum Tuberosum L.) Production Dynamics Under Varied Irrigation and Potash Regimes

  • 期刊论文

  • 发表日期：

    2025年8月7日

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  • Trisha Manna,
  • Manoj Kumar Nanda,
  • Abhijit Saha,
  • Asis Mukherjee,
  • Manabendra Ray,
  • Anannya Dhar,
  • Saikat Dey,
  • Sukamal Sarkar,
  • Ahmed Gaber,
  • Akbar Hossain

摘要

The growth and yield of any crop are largely dependent on intercepted photosynthetically active radiation (IPAR), and the efficiency of that crop to convert it into dry matter, i.e. radiation use efficiency (RUE). In this context, two years (2018–2019 and 2019–2020) of field experiments were carried out, to study the seasonal distribution of PAR and its effect on the growth, yield attributes, and RUE of potato var. Kufri Jyoti. Four levels of irrigation with irrigation water depth (IW): cumulative pan evaporation (CPE) (IW: CPE = 0.4, 0.8, 1.2, and 1.6) and three levels of potassium (K2O: 100, 150, and 200 kg ha−1) were applied as the main plot and sub-plot factors respectively in the experiment which was laid out in split-plot design with three replications. Seasonal variation of all components of PAR was studied and RUE was assessed. Furthermore, correlations were established between these variables and various growth and yield parameters. The results revealed that the incident PAR use efficiency (PARUE) varied from 1.12 to 3.31 g MJ−1 in 2018-19 and from 1.58 to 2.53 g MJ−1 in 2019-20 whereas the intercepted PARUE varied from 3.64 to 8.35 g MJ−1 in 2018-19 and from 4.34 to 6.24 g MJ−1 in 2019-20. APAR (%) exerted a positive and highly significant correlation whereas reflected PAR (RPAR) (%) showed a significantly strong negative correlation with the growth and yield of potatoes.