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Effect of Zinc Fertilizer Application on Growth Yield and Yield Contributing Characters in Rice

Md. Ibrahim Ali
Agronomy Division, Bangladesh Institute of Nuclear Agriculture, Mymensingh-2202, Bangladesh.

M. A. Islam
Agricultural Engineering Division, Bangladesh Institute of Nuclear Agriculture, Mymensingh-2202, Bangladesh.

Q. A. Khaliq
Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur-1706, Bangladesh.

M. A. Rouf
Bangladesh Institute of Nuclear Agriculture, Mymensingh-2202, Bangladesh.

Abstract/ Executive Summary:

A field experiment was carried out at the field of Department of Agronomy, BSMRAU campus, Gazipur, of Bangladesh during aman season (July-October) of 2017 to study the effect of zinc fertilizer application on growth, yield and zinc partitioning in three rice varieties: (BRRI dhan 56, BRRI dhan 57 and BRRI dhan 62) at three levels of zinc fertilization, no application of zinc, 10and 20 kg Zn ha^-1. The highest leaf area indices of 3.15 in BRRI dhan 56, and 3.27 in BRRI dhan 57 were recorded with the application of 10 kg Zn ha^-1 at 75 DAT and 3.28 in BRRI dhan 62 with 20 kg Zn ha^-1. Through the growth period, the SPAD value was the maximum at 10 kg Zn ha^-1 in BRRI dhan 56 and BRRI dhan 57 and in BRRI dhan 62 at 20 kg Zn ha^-1. The highest CGR, RGR, NAR were recorded at 10 kg Zn ha^-1 in BRRI dhan 56 and BRRI dhan 57, and at 20 kg ha^-1 in BRRI dhan 62. Zinc fertilizer at 10 kg Zn ha^-1significantly increased the number of effective tiller m^-2, length of panicle, total number of spikelet’s panicle^-1,1000-grain weight, number of filled spikelet’s panicle^-1, grain yield, and straw yield in BRRI dhan 56 and BRRI dhan 57, and at 20 kg Zn ha^-1 in BRRI dhan 62. It was revealed that the rice varieties BRRI dhan 56 and BRRI dhan 57 responded to the application of 10 kg Zn ha^-1, while BRRI dhan 62 to 20 kg Zn ha^-1. Overall results indicate the application of zinc might be necessary to ensure satisfactory yield.

Keywords: Partitioning; Agronomy; Physiology; Apparent recovery, Utilization efficiency.

Location: Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur of Bangladesh.

Start Date: 00-07-2017

End Date: 00-10-2017

Program Area: Crop-Soil-Water Management

Commodity: Fertilizer, Rice

Objectives:

To find out the effect of zinc fertilizer on growth, yield, and yield contributing characters in rice.

Methodology:

The experiment was carried out at the field of the Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur of Bangladesh during aman season (July- October) of 2017. The experimental site was located between 24.09° N latitude and 90.26° E longitude having an elevation of 8.4 m from sea level. The soil of the experimental farm belongs to Salna series under the Agro-ecological zone of Madhupur Tract (AEZ 28). The soil represents the Shallow Red Brown Terrace. The texture of the soil is silty clay in the surface layer and silty clay loam in the subsurface layer (AEZ 28). The experiment was laid out in a factorial Randomized Complete Block Design with three replications. The unit plot size was 3 mx4 m. Row and hill spacing was (20 cmx15 cm). Treatments, three rice varieties: (BRRI dhan 56, BRRI dhan 57 and BRRI dhan 62). To know the response of these varieties to zinc fertilizer application the variety BRRI dhan 62 standard check variety. Three levels of zinc fertilizer: (no application of zinc, 10 and 20 kg Zn ha^-1). During final land preparation, cow-dung was incorporated into the soil at the rate of 5 t ha^-1. A fertilizer dose of 80 kg N ha^-1, 36 kg P₂O₅ ha^-1, 50 kg K ha^-1, 20 kg S ha^-1, respectively was applied. Nitrogen, phosphorus, potassium and sulphur were applied in the form of urea, TSP, MoP and gypsum, respectively. The different levels of zinc fertilizer were applied in the form of zinc sulphate after 14 days of transplanting and it was incorporated into the soil. Data were recorded on plant height number of tiller dry matter accumulation on the basis of dry matter accumulation and the leaf area the values for different growth parameters viz. Leaf Area Index (LAI), crop growth rate (CGR) and relative growth rate (RGR) and net assimilation rate (NAR) were calculated. At maturity, data were recorded on yield contributing characters and analyzed statistically following the procedure described by Gomez and Gomez. The SPAD value (Soil Plant Analysis and Development value) was taken in the experiment using SPAD meter. The statistical analysis was done by using Statistix10.

Source of Information: Asian Journal of Advances in Agricultural Research- 9(2): 1-10, 2019

Article Link (Online Journal): DOI: 10.9734/AJAAR/2019/v9i229998

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The plant height, LAI, SPAD value, CGR, RGR, NAR and yield were the highest at 10 kg Zn ha^-1 in BRRI dhan 56 and BRRI dhan 57 but in BRRI dhan 62 at 20 kg Zn ha^-1. The highest number of tillers m^-2, panicle length, total filled spikelets panicle^-1, total spikelets panicle^-1, 1000-grain weight, grain yield and straw yield of rice significantly increased at 10 kg Zn ha^-1 in BRRI dhan 56 and BRRI dhan 56 and at 20 kg Zn ha^-1 in BRRI dhan 62. Application of 10kg Zn ha^-1 produced the highest grain yield (4.024 kg ha^-1) over 0 kg Zn ha^-1 (3.768 kg ha^-1).

Knowledge Management: Journal