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Plant Science Today (PST)

Research Articles

Early Access

Improved lodging resistance and altered gibberellic acid levels in Proso Millet (Panicum miliaceum L.) through anti-gibberellins and silicon applications

DOI
https://doi.org/10.14719/pst.6250
Submitted
22 November 2024
Published
10-03-2025
Versions

Abstract

This study examines the impact of foliar applications of growth regulators chlormequat chloride and Mepiquat Chloride (MC) combined with potassium silicate on the growth and productivity of Proso Millet (ATL 1). The field experiment was conducted at Tamil Nadu Agricultural University,Agricultural College and Research Institute, Vazhavachanur, India. A randomized block design with ten treatments, including control and varying concentrations of the growth regulators was used. The results showed that treatments involving 500 ppm chlormequat chloride + 1% potassium silicate and 500 ppm mepiquat chloride + 1% potassium silicate significantly reduced plant height and enhanced stem diameter, leaf area and specific leaf weight. The 500 ppm chlormequat chloride + 1% potassium silicate exhibited the highest chlorophyll content (3.898 mg g-1 ) and crop growth rate (23.90 g m-2 day-1 ), which correlated with increased grain yield (1548 kg ha-1 ) and straw yield (2853 kg ha-1 ). These treatments improved lodging resistance by increasing stem rigidity and overall structural integrity. These findings indicate that combining chlormequat chloride with potassium silicate enhances structural strength, minimizes the risk of lodging during adverse weather conditions and optimizes yield potential in Proso Millet, making it a viable strategy for enhancing productivity in climate-resilient crops.

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