Integrated nutrient management approaches increased the growth and yield of carrot

Abstract

To evaluate the influence of integrated use of nutrient on the development and production of carrot a research trial was executed at the Farm under Department of Horticulture, Bangladesh Agricultural University, Mymensingh from the month of November, 2021 to February, 2022. The factorial experiment involved two carrot varieties namely Shidur and New Kuroda and seven nutrient treatments viz. Control (No nutrient), 100% Poultry manure (PM) @ 5t/ha, 100% Vermicompost (VC) @ 6t/ha, 100% Recommended dose of fertilizer (RDF) @ 200kg urea+ 125 kg TSP+ 120 kg MP per hectare, 50% PM + 50% RDF, 50% VC + 50% RDF and 30% PM + 30% VC + 40% RDF. RCBD (Randomized Complete Block Design) was used to perform the experiment with three replications. In case of variety, growth and yield attributes such as plant height (38.81 cm), length (13.14 cm) and diameter (3.17 cm) of roots, root fresh weight in each plant(61.43 g), gross yield (27.47 t/ha) and commercial yield (24.78 t/ha) observed higher in Shidur than New Kuroda. Considering the nutrient treatments, 30% PM + 30% VC + 40% RDF treatment performed better than any other treatments in respect to plant height (49.79 cm), leaf number per plant (10.50), length (15.08 cm) and diameter (3.94 cm) of roots, fresh weight of root in each plant (87.36 g), gross (37.65 t/ha) and commercial yield (34.40 t/ha), while control treatment produced the minimum plant height (27.73 cm), leaf number per plant (8.23), length (10.56 cm) and diameter (2.11 cm) of roots, gross (17.52 t/ha) and marketable yield (15.08 t/ha). Considering the treatment combinations, Shidur with 30% PM + 30% VC + 40% RDF formed the tallest plant (50.96 cm), length of root (15.42 cm), diameter of root (4.18 cm), root weight per plant (88.56 g), gross yield (38.90 t/ha) and commercial yield (35.77 t/ha). The shortest plant (26.50 cm), minimum length (9.92 cm) and diameter (2.07 cm) of roots, root weight per plant (31.83 g), gross (16.33 t/ha) and commercial yield (13.73 t/ha) were observed from variety New Kuroda with control treatment combination. The study concludes that the treatment combination of Shidur with 30% PM + 30% VC + 40% RDF could be used for enhanced growth and production of carrot.