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Efficacy, Energy Budgeting, and Carbon Footprints of Weed Management in Blackgram ( Vigna mungo L.)

Author

Listed:
  • Gurdeep Singh Malhi

    (Department of Agronomy, Punjab Agricultural University, Ludhiana 141004, Punjab, India)

  • M. C. Rana

    (Department of Agronomy, Forages and Grassland Management, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur 176062, Himachal Pradesh, India)

  • Suresh Kumar

    (Department of Agronomy, Forages and Grassland Management, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur 176062, Himachal Pradesh, India)

  • Muhammad Ishaq Asif Rehmani

    (Department of Agronomy, Ghazi University, Dera Ghazi Khan 32200, Pakistan)

  • Abeer Hashem

    (Botany and Microbiology Department, College of Science, King Saud University, P.O. Box. 2460, Riyadh 11451, Saudi Arabia)

  • Elsayed Fathi Abd_Allah

    (Plant Production Department, College of Food and Agricultural Sciences, King Saud University, P.O. Box. 2460, Riyadh 11451, Saudi Arabia)

Abstract

Weed management in blackgram is one of the most efficient ways to improve its yield, as uncontrolled weed growth causes a significant decrease in crop yield. A field experiment was performed at Berthin, Himachal Pradesh, India, to investigate the efficacy, energy use efficiency (EUE), and carbon footprints of weed management tactics. Twelve weed control treatments were tested applied alone or in combination at pre and post emergence stages. The most prominent weeds were Cyperus iria , Dactyloctenium aegyptium , and Echinochloa colona , which caused a 68.1% loss in unweeded conditions. The application of weed control treatments reduced the weed count at 60 DAS from around 50% to 90%. The most efficient weed control treatment was pre-emergence (PRE) use of ready mix imazethapyr 35% + imazamox 35% WG @ 80 g ha −1 , which resulted in a minimum weed infestation (i.e., weed count and weed biomass) and consequently highest yield. Its efficacy in weed control treatment was on par with PRE use of ready mix imazethapyr (35%) + imazamox (35% WG @ 70 g ha −1 . Maximum energy use efficiency was also obtained upon PRE use of imazethapyr (35%) + imazamox (35% WG) @ 80 g ha −1 (8.27), trailed by PRE use of imazethapyr + imazamox @ 70 g ha −1 (7.84), mainly because of the higher yield obtained in these treatments which shows their efficiency in energy conversion. The carbon footprints were observed to be the lowest in ready mix combination of imazethapyr (35%) + imazamox (35% WG) applied at 80 g ha −1 (0.11 kg CE kg −1 yield), followed by imazethapyr (35%) + imazamox (35% WG) applied at 70 g ha −1 (0.12 kg CE kg −1 yield), as it resulted in the lowest emission per unit output production.

Suggested Citation

  • Gurdeep Singh Malhi & M. C. Rana & Suresh Kumar & Muhammad Ishaq Asif Rehmani & Abeer Hashem & Elsayed Fathi Abd_Allah, 2021. "Efficacy, Energy Budgeting, and Carbon Footprints of Weed Management in Blackgram ( Vigna mungo L.)," Sustainability, MDPI, vol. 13(23), pages 1-17, November.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:23:p:13239-:d:691265
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    References listed on IDEAS

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