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Changes in Chemical Composition of Jute Seed as Influenced by Nitrogen and Phosphorus Fertilizers

S. M. Mahbub Ali
Planning, Training & Communication Division, Bangladesh Jute Research Institute Dhaka

M. Moynul Haque
Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur

M. Shahadat Hossain
Agronomy Division, Bangladesh Jute Research Institute, Dhaka

M. M. Hussain
GRS Division, Bangladesh Jute Research Institute, Dhaka

M. N. Islam
Pest Management Division, Bangladesh Jute Research Institute, Dhaka

Abstract/ Executive Summary:

The study was conducted to determine the effect of nitrogen (N) and phosphorus (P) fertilizer on the physio-chemical changes in composition of jute seed under applied N and P Tossa jute (S.N.) cv. O-9897 was grown at five levels of nitrogen (0, 30, 60, 90 and 120 Kg N ha^-1) and five levels phosphorus (0, 10, 20, 30, 40 Kg P ha^-1) in late sown condition as seed crop. After harvesting seeds were categorized in to five groups viz. low vigour, medium low vigour, medium vigour, medium high vigour and high vigour which were used for analyzing the chemical composition of jute seed. Results revealed that the chemical composition of jute seed was changed under applied nutrient where combination of 120 kg N ha^-1and 40 kg P ha^-1 gave the highest soluble protein, soluble sugar and ash content while the lowest soluble protein, soluble sugar and ash content and the highest free amino acid and oil content were estimated from the treatment with no nitrogen and no phosphorus fertilizer.

Keywords: Jute seed, Nitrogen, Phosphorus, Chemical changes

Location: Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh

Start Date: 00-09-2007

End Date: 00-01-2008

Program Area: Crop-Soil-Water Management

Commodity: Jute

Objectives:

The present study was conducted aiming to determine the chemical composition of jute seed, to assess the changes in chemical composition of jute seed as influenced by nitrogen and phosphorus fertilizer and to find out the relationship between chemical composition and seed quality of jute.

Methodology:

The experiment was conducted at Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh during September 2007 to January 2008. The climate of the experimental site is sub-tropical in nature having very little rainfall in the mid October and mid November with gradual fall in temperature from last week of October. Tossa jute variety O-9897 was used for this experiment. Five levels of nitrogen (0, 30, 60, 90 and 120 kg N ha^-1) and five levels of phosphorus (0, 10, 20, 30, 40 kg P ha^-1) were used as experimental variables. Nitrogen was used in the form of urea and phosphorus in the form of triple super phosphate. Other fertilizers 20 kg K ha^-1 as murate of potash and sulphur 20 kg S ha^-1 as gypsum were used as recommended dose. The design was RCBD with three replications. The unit plot size was 3m x 2.5m. All other cultural practices were maintained according to recommendation. After properly collected dried seeds stored in plastic airtight container for determination of its qualitative parameters and chemical composition at three month of seed storage. Quality of freshly harvested jute seeds were assessed by germination test, speed of germination, seedling evaluation test, mean days to germination, seedling vigour index, electrical conductivity test, accelerated ageing test as per following procedures. Jute seeds were categorized into five groups viz. low vigour, medium low vigour, medium vigour, medium high vigour and high vigour representing N₀P_0, N₃₀P_10, N₆₀P_20, N₉₀P₃₀ and N₁₂₀ P_40, respectively applied in the field. Seeds harvested from these treatment combinations were used for analyzing the chemical composition of jute seed. The seeds were ground with the help of a mini grinding mill and this grounded seed samples were used to determine the chemical composition of seed. The chemical composition of jute seed viz. total soluble protein, total free amino acid, total soluble sugar, oil content and ash content were measured.

Source of Information: Bangladesh Agron. J. 2016, 19(2): 29-38

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Achievement/Findings:

From the study it could be concluded that the chemical composition of jute seed was changed due to applied nutrients, where seeds produced with 120 kg N ha^-1 and 40 kg P ha^-1 gave the highest soluble protein, soluble sugar and ash content while lowest in free amino acid and oil content. On the other hand, these results affected inversely on seed germination and seed vigour when the treatments had no nitrogen and phosphorus fertilizer.

Knowledge Management: Journal