Auxin-Induced Modulation of Growth and Mineral Dynamics in Carrot

Abstract

This study aimed to estimate the effects of foliarly applied diverse concentrations of indole-3-acetic acid (IAA) on the development, biomass produce and mineral uptake in carrot (Daucus carota L.) plants. The research was piloted at the University of Agriculture Peshawar during the 2024-2025 growing season. Carrot plants were treated with four IAA concentrations: 0 (control), 50, 100 and 150 ppm. Results exhibited that IAA treatment expressively improved plant height, root length, leaf number and total biomass equaled to the control. Among the treatments, 100 ppm IAA stemmed in the peak plant growth and biomass production, with values of 28.3 ± 1.2 cm for plant height, 30.5 ± 1.3 cm for root length, and 16.8 ± 0.7 g for total biomass. Additionally, mineral uptake of N, P and K was also suggestively heightened in the 100 ppm IAA treatment. These conclusions recommend that moderate IAA concentrations can effectually boost carrot productivity and mineral uptake, provided that a prospective tool for improving crop performance in horticulture.