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Major Nutrient Contents and Their Uptake by Brinjal as Influenced by Phosphorus and Sulphur

Md. Mehedi Hasan
M S Fellow
Department of Agricultural Chemistry, Bangladesh Agricultural University Mymensingh-2202Bangladesh

M. R. Islam
Department of Agricultural Chemistry, Bangladesh Agricultural University Mymensingh-2202, Bangladesh

B. K. Saha
Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

M. A. H. Chowdhury
Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

Abstract/ Executive Summary:

The study revealed that major nutrient contents and their uptake were significantly influenced by P and S interactions. They had positive significant effects on major nutrient contents and their uptake. Application of P increased N, P, K, Ca, Mg and S contents and their uptake up to 60 kg ha^-1 and over the dose the values were reduced or near to control treatment. Similarly, the gradual increases of major nutrient contents and their uptake were found in S application upto 30 kg ha^-1. Among the treatments the combination of P @ 60 kg ha^-1 and S @ 30 kg ha^-1 showed the highest N, P, K, S, Ca and Mg contents and their uptake. The lowest values were found in control treatment. Results showed that an appropriate interaction of P and S increased major nutrient contents of brinjal.

Keywords: Phosphorus, Sulphur, Brinjal, Interaction, Major nutrient contents and their uptake

Location: Department of Agricultural Chemistry, BAU, Mymensingh

Start Date: 00-10-2011

End Date: 00-05-2012

Program Area: Crop-Soil-Water Management

Commodity: Fertilizer

Objectives:

To evaluate the influence of phosphorus (P) and sulphur (S) on major nutrient contents and their uptake by brinjal.

Methodology:

The pot experiment was carried out in the net house of the Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh during the period from October, 2011 to May, 2012. Soil sample was collected from Genetics and Plant Breeding field laboratory after harvesting of crop at fallow condition. The soil was silt loam in texture having pH 6.08 with 0.71% OC, 0.10% N, 12.60 µg g^-1 available P, 10.90 µg g^-1available S and 0.14 cmol kg^-1 exchangeable K. As a test vegetable crop, seeds of brinjal cv. BARI brinjal-8 were collected from BARI, Gazipur. There were 12 treatment combinations with four levels of P (0, 30, 60 and 90 kg P ha^-1) and three levels of S (0, 15 and 30 kg S ha^-1). The experiment was laid out in completely randomized design with three replications. Recommended doses of urea, MoP, boric acid, zinc oxide, cowdung and poultry manure were mixed thoroughly with soil according to the fertilizer recommendation guide (BARC, 1997). Cowdung and poultry manure were mixed with soils 7 days before pot preparation and the other recommended fertilizers were given to the soil before transplanting the brinjal seedling. Urea was applied in 3 split applications. The pots were filled with 10 kg soil. Seeds were sown in separate pot and then, seedlings were transplanted when they were 30 days age. All necessary intercultural operations were performed as and when necessary throughout the growing period of brinjal. Irrigation was given everyday upto 45 DAT and then every alternate day upto the harvest. The brinal fruits were collected in the laboratory and N, P, K, S, Ca and Mg contents of brinjal fruits were determined by semi-micro kjeldahl method (Jackson, 1973 and Page et al., 1982), spectrophotometric method (Page et al., 1982), flame emission spectrophotometric method (Ghosh et al., 1983), complexometric method of titration using Na₂-EDTA (Page et al., 1982) and turbidimetrically (Tandon, 1995) respectively. The nutrients uptake by brinjal were calculated by using yield data that was represented by Hasan et al. (2013). Analysis of variance was done with the help of computer package program MSTAT-C according to Gomez and Gomez (1984) and the mean differences among different treatments were adjudged by DMRT test at 5% level of probability.

Source of Information: J. Bangladesh Agril. Univ. 11(1): 41–46, 2013, ISSN 1810-3030

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Results showed that an appropriate interaction of P and S increased major nutrient contents of brinjal. Single application of P up to 60 kg ha-1 and S upto 30 kg ha-1 increased N, P, K, S, Ca and Mg contents in brinjal fruit. Interaction effect of P x S on chemical and biochemical constituents of brinjal were also significant. The overall results suggest that P @ 60 Kg ha-1 and S @ 30 Kg ha-1 along with other recommended fertilizers can be used for cultivation of better nutrient contents brinjal in the agro-climatic condition of BAU.

Knowledge Management: Journal