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Effects of Sulphur, Magnesium and Zinc on Yield and Their Nutrient Uptake by T. Aman Rice

M. A. Tarafder
Soil Science Division, Bangladesh Institute of Nuclear Agriculture, Mymensingh, Bangladesh

Sadia Tasmin
Soil Science Division, Bangladesh Institute of Nuclear Agriculture, Mymensingh, Bangladesh

M. K. Khan
Soil Science Division, Bangladesh Institute of Nuclear Agriculture, Mymensingh, Bangladesh

M. A. Sattar
Director General, Bangladesh Institute of Nuclear Agriculture, Mymensingh, Bangladesh

Abstract/ Executive Summary:

A field experiment was conducted in the Old Brahmaputra Floodplain soil at the Bangladesh Institute of Nuclear Agriculture (BINA) farm, Mymensingh during Kharif season of 2012 with T. aman rice (cv. Binadhan-7) to evaluate the effects of sulphur, magnesium and zinc on the growth, yield and nutrient uptake. The experiment was laid out in a randomized complete block (RCBD) design with eight treatments in three replications. The eight treatments were T₁: NPK (control), T₂: S, T₃: Mg, T₄: Zn, T₅: S+Mg, T₆: S+Zn, T₇: Mg+Zn and T₈: S+Mg+Zn. All plots received an equal rate of N, P and K (N₈₀P₂₀K₄₀) to support normal plant growth. S, Mg and Zn were applied @ 10, 15 and 2 kg ha^-1, respectively. Source of N, P, K, S, Mg and Zn were urea, triple super phosphate, muriate of potash, gypsum, magnesium sulphate and zinc oxaide, respectively. The grain and straw yields of T. aman rice were significantly influenced due to application of S, Mg and Zn. Grain yield of T. aman rice varied from 3.13 to 5.52 t ha^-1, with the highest yield recorded in the treatment T₈ followed by T₅ treatment. S, Mg and Zn contents and their uptake by T. aman rice were affected significantly. The highest nutrients uptake by both grain and straw was obtained from the treatment T₈and the lowest was obtained in control. The results revealed that S, Mg and Zn along with NPK are essential to obtain higher yield of T. aman rice than the application of NPK alone.

Keywords: T. aman rice, Sulphur, Magnesium, Zinc, Nutrient uptake

Location: BINA headquarters farm, Mymensingh

Start Date: 00-07-2012

End Date: 00-11-2012

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

To see the response of S, Mg and Zn fertilization on T. aman rice in Old Brahmaputra Floodplain soil.

Methodology:

The experiment was conducted at BINA headquarters farm, Mymensingh under the Old Brahmaputra Floodplain (AEZ 9) non-calcareous dark grey floodplain Sonatala silt loam soil during July to November 2012. T. aman rice (Binadhan-7) was used as test crop. Eight treatments combinations were used with S, Mg and Zn, such as T₁: NPK (control), T₂: S, T₃: Mg, T₄: Zn, T₅: S+Mg, T₆: S + Zn, T₇: Mg + Zn and T₈: S + Mg + Zn. S, Mg and Zn were applied @ 10, 15 and 2 kg ha^-1 respectively. The experiment was conducted following RCBD with three replications for each treatment. A common basal dose of N₈₀P₂₀K₄₀ was applied to each plot. The source of N, P, K, S, Mg and Zn was urea, triple super phosphate, muriate of potash, gypsum, magnesium oxide and zinc oxide, respectively. Nitrogen was applied in three equal splits. One-third of urea was applied as basal to the individual plots during final land preparation. The second split of urea was applied 30 days after transplanting i.e., at maximum tillering stage and the remaining split at 55 days after panicle initiation stage. Intercultural operations were done as and when required. Supplementary irrigation was done as per requirement. Plant height, panicle length, grains hill^-1, number of tillers hill^-1 and 1000-grain weight were recorded when the crop attained at maturity. After harvesting the crop grain and straw yields were dried and weighted from each unit plot. Initial soil samples were analyzed following standard method such as soil pH was determined by glass electrode pH meter (1 : 2.5 soil-water ratio), Particle-size distribution (%) was analyzed using the hydrometer method, organic matter estimated by wet oxidation method , total nitrogen was determined , available S was estimated by turbidity method exchangeable K and Mg was determined by extraction with 1M NH₄OAc at pH 7 and their content were measured by flame photometer available B was determined and available Zn was extracted by DPTA method, measured by AAS. The nutrient uptake was calculated using the nutrient content of respective element in the plant samples.

Source of Information: Bangladesh J. Nuclear Agric. 27 & 28: 83-93, 2013

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

From the results of the study it can be suggested that application of S, Mg and Zn at the rate of 10, 15 and 2 kg ha^-1, respectively along with recommended dose of N, P and K is necessary for obtaining higher grain yield of T. aman rice with increased nutrients content.

Knowledge Management: Journal