Potassium-Driven Growth Regulation and Nutrient Dynamics in Carrot

Abstract

Potassium (K) is an indispensable macronutrient that is critical for plant growth, water regulation, and nutrient uptake. This study designed to scrutinize the impact of diverse concentrations of potassium on the development, biomass and mineral uptake in carrot (Daucus carota L.). A precise pot experiment was conducted at the University of Agriculture DI Khan during the 2024–2025 growing season. Carrot plants were treated with four potassium concentrations 0 ppm (control) to 150 ppm with 50 ppm difference in concentration. The results exposed that potassium treatment expressively boosted plant height, root length, and overall biomass paralleled to the control. The 100 ppm potassium treatment indicated the chief improvements in plant growth and biomass, with values of 29.5 cm for plant height, 30.2 cm for root length and 17.3 g for total biomass. Additionally, mineral uptake of N, P & K was significantly increased in the 100 ppm treatment. These findings suggest that judicious potassium concentrations can increase carrot productivity and nutrient absorption, offering a prospective strategy for improving crop performance in horticultural systems..