GROWTH AND YIELD OF CARROT AS INFLUENCED BY MACRONUTRIENTS AND HARVESTING TIME

Abstract

A field experiment was conducted at Horticultural research field of Sher-e-Bangla Agricultural University, Dhaka during the period from December, 2020 to March 2021 in Rabi season to study the growth and yield of carrot as influenced by macronutrients and harvesting time. The experiment consisted of two factors, and followed Randomized Complete Block Design (RCBD) with three replications. Factor A: Different levels of macronutrients (4) e.i. F ii

0 = Control, F 1 = N 160 P

F 2 = N 185 P 70 K 140 S 40 kg ha -1, F 3 = N 210 P 90 K 160 S 50 kg ha -1 50 and Factor B: A Harvesting time (3) e.i. H 1 = 90 days after sowing, H 2 = 100 days after sowing and H = 110 days after sowing. Experimental results revealed that different levels of macronutrients and harvesting time significantly influenced the growth and yield of carrot. In case of different levels of macronutrients application the highest brix percentage of carrot root (7.77 %), marketable root yield per plot (6.13 kg) and marketable root yield per hectare (25.56 t) of carrot were observed in F 2 treatment (N 185 P 70 K ). Among different time of harvesting, the highest brix percentage of carrot root (7.20 %), marketable root yield per plot (6.10 kg) and marketable root yield per hectare (25.42 t) of carrot were observed in H (harvesting at 100 days after sowing) treatment. In case of combination treatment the highest brix percentage of carrot root (8.20 %), marketable root yield per plot of carrot (6.40 kg) and marketable root yield of carrots per hectare (26.67 t) were observed in the F 2 2 H treatment combination comparable to others treatment combinations. Therefore, it was suggested that cultivation of carrot through application of fertilizer @ N 185 P 2 70 K 140 S ) and harvesting at 100 days after sowing (H 2 40 ), appeared to be best for achieving higher growth, yield and quality root of carrot.