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Influence of Phosphorus and Sulphur on Yield, Yield Attributes and Biochemical Composition of Brinjal

M.M. Hasan
Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymnsingh

M.A.H. Chowdhury
Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymnsingh

B.K. Saha
Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymnsingh

M.R. Islam
Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymnsingh

Abstract/ Executive Summary:

A pot experiment was conducted in the net house of the department of Agricultural Chemistry, Bangladesh Agricultural University (BAU), Mymensingh to observe the influence of phosphorus (P) and sulphur (S) on yield, yield attributes and biochemical composition of brinjal cv. BARI brinjal-8 during the period from October, 2011 to May, 2012. The experiment was laid out in completely randomized design with 12 treatments and 3 replications using four (0, 30, 60 and 90 kg P ha^-1) levels of P and three (0, 15 and 30 kg S ha^-1) levels of S. The combinations of P and S were P₀S₀, P₀S₁₅, P₀S₃₀, P₃₀S₀, P₃₀S₁₅, P₃₀S₃₀, P₆₀S₀, P₆₀S₁₅, P₆₀S₃₀, P₉₀S₀, P₉₀S₁₅ and P₉₀S₆₀. Urea, muriate of potash, boric acid, zinc oxide, cowdung and poultry manure were applied with all the treatments as basal dose according to the fertilizer recommendation guide. The study revealed that yield and yield attributes such as plant height, no. of branches, no. of leaves, no. of flowers, no. of fruits, fruit length, fruit diameter, fruit weight, vitamin C and protein content of brinjal were significantly influenced by P, S and their interactions. Plant height, number of branches, leaves, flowers and fruits were increased 90, 60, 120 and 105 days after transplanting (DAT), respectively and then either decreased or remained constant. The highest values of all the parameters were obtained from P₆₀and S₃₀ treatments except the vitamin C content which was maximum in P₃₀ and S₁₅ treatment. The results suggest that P and S @ 60 and 30 kg ha^-1 along with basal doses of other inorganic fertilizers and organic manures can be used to increase brinjal yield and vitamin C content under the agro climatic condition of BAU.

Keywords: Phosphorus, Sulphur, Brinjal, Yield and Vitamin C

Location: Agricultural Chemistry, Bangladesh Agricultural University (BAU), Mymensingh

Start Date: 00-10-2011

End Date: 00-05-2012

Program Area: Crop-Soil-Water Management

Commodity: Brinjal

Objectives:

1. To observe the influence of phosphorus (P) and sulphur (S) on yield, yield attributes and biochemical composition of brinjal cv. BARI brinjal-8.

Methodology:

The pot experiment was conducted in the net house of the department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh during the period from October, 2011 to May, 2012. Initial soil sample was collected from Genetics field laboratory of Bangladesh Agricultural University, Mymensingh. The collected soils from 0-15 cm depth were pulverized and inert materials, visible insect pests and plant residues were removed. The soil was air dried and then cowdung and poultry manure were mixed with soil 7 days before transplanting @ 2 t ha^-1 and 3 t ha^-1, respectively. The processed soil samples were placed in the pots at the rate of 10 kg pot^-1. Initial soil was analyzed having soil pH (6.08), organic matter (0.71 %), total N (0.10 %), available P (12.60 µg g^-1), exchangeable K (0.14 cmol kg^-1) and available S (10.90 µg g^-1) by respective methods of analyses and adjusted the basal doses of urea, muriate of potash, boric acid and zinc oxide following fertilizer recommendation guide. P and S were added as per treatment and thoroughly mixed with the soil. Urea was applied in 3 installments, one-third during pot preparation and the rest two after 30 days and 60 days after transplanting (DAT). The treatments were mixed thoroughly with soil. Brinjal seeds were collected from Horticulture division of Bangladesh Agricultural Research Institute, Gazipur. Seeds were sown in pot having highly friable loose soil and one month aged three seedlings were transplanted to each prepared pot. Two seedlings were removed 15 and 30 days after transplanting from the pot keeping the healthy one undisturbed. All necessary intercultural operations (staking, weeding etc.) were performed as and when necessary throughout the growth period of the crop. Irrigation was given everyday upto 45 DAT and then every alternate day upto the harvest. Agronomic characteristics like plant height, number of branches plant^-1, number of leaves plant^-1, number of cluster of flower plant^-1, number of fruits plant^-1, fruit length, fruit diameter, fruit weight, yield were collected and recorded. Fruits were harvested thrice at full maturity stage of brinjal. Vitamin C and total N contents of brinjal fruits were determined by indophenol dye extraction method and semi-micro kjeldahl method. Protein content was calculated from total N content. Analysis of variance was done with the help of computer package program MSTAT-C and adjudged the mean differences by DMRT test.

Source of Information: J. Agrofor. Environ. 6 (2): 109-114, 2012; ISSN 1995-6983

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The study revealed that yield and yield attributes such as plant height, no. of branches, no. of leaves, no. of flowers, no. of fruits, fruit length, fruit diameter, fruit weight, vitamin C and protein content of brinjal were significantly influenced by P, S and their interactions. Plant height, number of branches, leaves, flowers and fruits were increased 90, 60, 120 and 105 days after transplanting (DAT), respectively and then either decreased or remained constant. The highest values of all the parameters were obtained from P₆₀ and S₃₀ treatments except the vitamin C content which was maximum in P₃₀ and S₁₅ treatment. The results suggest that P and S @ 60 and 30 kg ha^-1 along with basal doses of other inorganic fertilizers and organic manures can be used to increase brinjal yield and vitamin C content under the agro climatic condition of BAU.

Knowledge Management: Journal