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Influence of Auxin Application and Row Spacing on Growth Performance and Industrial Yield of Soybean | ||
| Journal of Medicinal and Industrial Plant Sciences | ||
| Volume 3, Issue 3, September 2025, Pages 63-74 PDF (491.94 K) | ||
| Document Type: Original Article | ||
| DOI: 10.32894/MEDIP.25.3.3.6 | ||
| Authors | ||
| Esraa Saad Hadi; Firas Ahmed Alsajri* | ||
| Department of Field Crops, College of Agriculture, Tikrit University, Tikrit, Iraq. | ||
| Abstract | ||
| To investigate the effect of spraying with indole acetic acid and the row spacing, a field experiment was carried out during the summer 2024 at the Field Crops Research Station, Tikrit University. Four concentrations of Indole Acetic acid (IAA) (zero, 150, 300, and 450 ppm) were applied when the plants reached 35 days after planting and four row spacing (30-30, 30-60, 60-60, and 75-75 cm) were used. The experiment was applied according to RCBD design and average were tested according to Duncan test. The results showed that the 300 ppm of IAA increased the branches number per plant (9.02 branches plant-1), the 100 seeds weight (16.04 g), yield (1.50 tons ha-1), and the yield oil (329.59 kg ha-1). The row spacing 75-75 cm recorded the highest averages in the branch number per plant (9.73 branch plant-1), and the 100 seeds weight (16.89 g) while 60-60 cm was the highest in nodes number (11.79 node plant-1). The interaction between IAA and row spacing affected significantly most of soybean traits. The interaction 300×75-75 was significantly higher 100 seeds weight (18.38 g) while the interaction 150×60-60 was significantly higher in nodes number (13.13 nod plant-1), and the interaction 450×30-30 was the highest in the yield oil (416.64 kg ha-1). The result outcomes will be benefitting the industrial and agronomic soybean community. | ||
Highlights | ||
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| Keywords | ||
| Soybean, Growth; Row Spacing; Auxin; IAA | ||
| Full Text | ||
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| References | ||
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