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Water relations and yield characteristics of mungbean as influenced by foliar application of gibberellic acid (GA3)

Authors
  • Islam, Mohammad Sohidul1
  • Hasan, Md. Kamrul1
  • Islam, Md. Rafiqul1, 2
  • Chowdhury, Md. Kaium3
  • Pramanik, Moaz Hosen4
  • Iqbal, Muhammad Aamir5
  • Rajendran, Karthika6
  • Iqbal, Rashid7
  • Soufan, Walid8
  • Kamran, Muhammad9
  • Liyun, Liu10
  • El Sabagh, Ayman11
  • 1 Department of Agronomy, Hajee Mohammad Danesh Science and Technology University, Dinajpur , (Bangladesh)
  • 2 Agronomy Division, Pulse Research Centre (BARI), Ishurdi , (Bangladesh)
  • 3 Department of Agricultural Extension, Agricultural Training Institute, Gaibanda , (Bangladesh)
  • 4 Department of Agricultural Chemistry, Hajee Mohammad Danesh Science and Technology University, Dinajpur , (Bangladesh)
  • 5 Department of Agronomy, Faculty of Agriculture, University of Poonch Rawalakot, Rawalakot , (Pakistan)
  • 6 VIT School of Agricultural Innovations and Advanced Learning (VAIAL), Vellore Institute of Technology (VIT), Vellore , (India)
  • 7 Department of Agronomy, Faculty of Agriculture and Environment, The Islamia University of Bahawalpur, Bahawalpur , (Pakistan)
  • 8 Plant Production Department, College of Food and Agriculture Sciences, King Saud University, Riyadh , (Saudi Arabia)
  • 9 College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou , (China)
  • 10 Department of Biotechnology, Graduate School of Engineering, Osaka University, Osaka , (Japan)
  • 11 Department of Agronomy, Faculty of Agriculture, Kafrelsheikh University, Egypt , (Egypt)
Type
Published Article
Journal
Frontiers in Ecology and Evolution
Publisher
Frontiers Media SA
Publication Date
Jan 26, 2023
Volume
11
Identifiers
DOI: 10.3389/fevo.2023.1048768
Source
Frontiers
Keywords
Disciplines
  • Ecology and Evolution
  • Original Research
License
Green

Abstract

Optimizing the dose and foliar application frequency of growth regulators such as gibberellic acid (GA3) may play an important role in ensuring food security under changing climate scenarios by boosting grain yield of food legumes such as mungbean. A trial was conducted to evaluate the growth promoting effect of foliage applied gibberellic acid (GA3) at various spraying frequencies for mungbean crop. The employed treatments included four gibberellic acid levels (0, 100, 200, and 300 ppm) and two application frequencies (single spray at 30 days after sowing DAS, and two sprays at 30 and 40 DAS). Water relations, yield contributing characteristics and mungbean grain yield were among the response variables investigated. The research findings revealed that GA3 (200 ppm applied twice at pre-flowering and post-flowering stages) significantly improved the water relations, morphological and yield attributes of mungbean. This treatment combination remained unmatched by producing the highest relative water content in the stem (85.52), water retention capacity in the stem (17.24), and water uptake capacity in the stem and leaf (2.35). Furthermore, the same treatment combination resulted in the maximum plant height (50.04 cm), pods per plant (11.07), pod length (6.62 cm), grains number per pod (11.00), 100-grains weight (3.78 g), grain yield per plant (4.57 g), and a minimum water saturation deficit. Thus, GA3 foliage application at 200 ppm at 30 and 60 DAS has the potential to stimulate growth and increase the yield attributes and grain yield of mungbean. However, additional in-depth field trials with various doses of GA3 sprayed at a higher frequency may be required before recommending GA3 for general adoption to mungbean growers.

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