Experiments were conducted during the two winter seasons of 2018 and 2019 to investigate the response of two carrot cultivars (Chantenay and Nantes) to pre-and post-emergence linuron applications and different agronomic methods (broadcasting and drilling on raised rows and broadcasting in beds). The effect of factors on the vegetative growth and accumulation of nutrient compounds has been assessed. Pre emergence linuron treatment substantially increased the yield, dry matter and root physical characters (root length and weight, root and core diameter) compared to post emergence treatment. Chantenay accumulated more phenolics and antioxidants than Nantes, which was 14.73-16.59%, 7.64-8.15% and 12.37-15.66% greater (p < 0.05) than Cahantenay in carotenoids, total and reducing sugars in 2018 and 2019, respectively. In order to raise the productivity of feddan, broadcasting on raised rows (140 plant/ m²) was correlated with higher yield and the sweet and darker root of carrot. Carrots were strongly influenced by linuron addition times in terms of yield or phytochemical status. Phenolic compounds and antioxidant strength were cultivar-dependent and Chantenay was the richest overall.