Influence of Organic Manures and Neem Products on Growth and Yield of Carrot

Abstract

An experiment was conducted at the Horticulture Farm of Sher-e-Bangla Agricultural University, Dhaka during the period from November 2011 to February 2012 to evaluate growth and yield of carrot as influenced by different types of organic manures and neem products. The experiment consisted of two factors which are as follows: factor A: Three levels of organic manures, O_o ­Control (no organic manure), O_C ­ Cowdung (10 t ha^-1) and O_V ­Vermicompost (3.5 tha^-1). Factor B: Three levels of neem product N_o ­ Control (no neem products), N₁ ­ Neem leaf powder (250 kg ha^-1) and N₂ ­ Neem oil cake (250 kg ha^-1). The experiment was conducted in Randomized Complete Block Design with three replications. Application of organic manures and neem products significantly influenced the growth and yield contributing parameters. For organic manures, vermicompost gave the highest marketable yield (32.20 t ha^-1) whereas; control produced the lowest marketable (12.50 t ha^-1) yield. The highest gross yield (27.89 t ha^-1) and marketable (25.60 t/ha) yield was obtained from N₁ and the lowest from N₀. For combined effect N₁O_v produced the highest marketable yield (29 t ha^-1) whereas, the lowest (9.00 tha^-1) from N₀O₀. So, it may be concluded that vermicompost with neem leaf powder was found suitable for growth and yield of carrot.

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