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Effect of Inorganic Fertilizers on the Initial Growth of Goraneem (melia Azedarach L.) Seedling

M.M. Rahman
Department of Agroforestry,Bangladesh Agricultural University, Mymensingh-2202

Dipali Deb Nath
Department of Agroforestry,Bangladesh Agricultural University, Mymensingh-2202

M.A.R. Sarkar
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202

M.A. Mondal
Department of Biotechnology, Bangladesh Agricultural University, Mymensingh-2202

A.K.M.G. Mabud
Department of Agroforestry,Bangladesh Agricultural University, Mymensingh-2202

Abstract/ Executive Summary:

The effect of two commonly used inorganic fertilizers (urea and TSP) on the initial growth of Goraneem (Melia azedarach L.) seedlings grown at pot yard of the Agroforestry Department, BAU, Mymensingh, during the period from 15 April to 15 September 2007 was studied to standardizing the optimum dose for raising quality seedlings. The experiment was carried out in a completely randomized design with three replications. There were 16 treatments including one control (N0P0). Seedlings were supplied with 0, 1, 1.5, 2g for both of urea and TSP /polybag soil during the polybag (12 × 17 cm size) preparation. Seedlings were evaluated at 150 days after planting. Seedling height, base diameter, root length, and other growth parameters were measured and variables were also calculated. Seedling growth was in general, markedly better in fertilized treatment compared to the control. Combined application of nitrogen and phosphorus was found significantly promoting the plant height, fresh weight and dry weight of stem, root and leaves, TDM, shoot-root ratio, number of leaves plant^-1 and base diameter. The study suggests that application of 1.5 g urea in combination with 1.5g TSP/polybag soil (N₂ × P₂) may be beneficial for raising quality polybag seedlings of Goraneem (Melia azedarach L.).

Keywords: Melia azedarach L., Inorganic Fertilizers, Initial Growth.

Location: Potyard of the Agroforestry Department, Bangladesh Agricultural University (BAU)

Start Date: 15-04-2007

End Date: 15-09-2007

Program Area: Crop-Soil-Water Management

Commodity: Indian lilac (Neem)

Objectives:

1. To find out an optimum dose of urea and TSP for raising quality polybag seedlings of Melia azedarach L.

Methodology:

The polybag experiment was carried out at potyard of the Agroforestry Department, Bangladesh Agricultural University (BAU), Mymensingh during 15th April to 15th September, 2007. The soil for filling the polybag was collected from the field of the Agroforestry farm, BAU, Mymensingh from depth of 0-15cm and the soil was dried in the sun and roots of plants and pebbles were removed and mixed up with fertilizer as per treatment. The size of the polybag was 12 cm × 17 cm with 1.78kg dried soil holding capacity. The experiment comprised four doses of nitrogen viz. N₀ = 0, N₁ = 1, N₂ = 1.5 and N₃ = 2.0g, urea (46% nitrogen)/polybag soil; and four doses of phosphorus viz. P₀ = 0, P₁ = 1, P₂ = 1.5 and P₃ = 2.0g, TSP (48% P₂O₅)/polybag soil. The experiment was carried out in completely randomized design with three replications. One month old Melia azedarach L. seedling were collected from Sutiakhali nursery and planted in polybag on 15th April, 2007 in the afternoon. Watering was carried regularly by fine shower, which could not disturb the seedlings physically. After 150 days after planting (DAP) plant height, base diameter, stem fresh and dry weight, root length, root fresh and dry weight, leaves number plant-1, total dry matter and shoot-root ratio were measured. Data collection on different parameters were compiled and tabulated in proper form for statistical analysis. Analysis of variance was done with the help of computer package MSTAT program. The mean differences among the treatments were compared with Duncan’s Multiple Range Test.

Source of Information: J. Agrofor. Environ. 1(2): 139-142, 2007; ISSN 1995-6983

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Combined application of nitrogen and phosphorus was found significantly promoting the plant height, fresh weight and dry weight of stem, root and leaves, TDM, shoot-root ratio, number of leaves plant^-1 and base diameter. The study suggests that application of 1.5 g urea in combination with 1.5g TSP/polybag soil (N₂ × P₂) may be beneficial for raising quality polybag seedlings of Goraneem (Melia azedarach L.).

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