Agricultural Research Management Information System

Home
Research Summary
Search
About Us
- ARMIS
- Brochure
Contact Us
Report
User Request
Data Input
Help
- Operation Manual
  - PDF
  - Video
- Program Area & Commodity
We have reached 37600 number of research entries at this moment.

- Logout

Research Detail

Home
Research
Detail

Evaluation of N P Compound (n P C) Fertilizer on Boro Rice

A.T.M. Sakhawat Hossain
Senior Scientific Officer
Soil Science Division, BRRI Gazipur

Pranesh Kumar Saha
Chief Scientific Officer
Soil Science Division, BRRI Gazipur

Abstract/ Executive Summary:

A field experiment was conducted in Boro 2013-14 at BRRI farm, Gazipur to find out optimum dose of N P C and to compare the effectiveness of the fertilizer with other common fertilizers for rice cultivation. Treatments used were: T₁ = control (no P fertilizer), T₂ = TSP @ 7.5 kg P/ha, T₃ = NPC @ 7.5 kg P/ha, T₄ = TSP @ 15 kg P/ha and T5 = NPC @ 15 kg P/ha. Grain yield of BRRI dhan29 was significantly influenced by P application from TSP and NPC. At lower P doses (7.5 kg P/ha), significantly higher grain yield was obtained with TSP treatment (5.18 t/ha) over P control. On the other hand, NPC treatment (7.5 kg P/ha) produced 4.77 t/ha over P control. About 1.27 t/ha yield increased with NPC application @ 7.5 kg P/ha over P control treatment. Contribution of NPC and TSP @ 7.5 kg/ha was statistically similar in terms of grain yield. Application of 15 kg P/ha, grain yield in TSP plot was 5.75 t/ha (increased 64% over control) and in NPC, it was 5.21 t/ha (increased 49% over control). TSP gave around 0.5 t/ha yield increase over NPC.

Keywords: NPC, TSP, Rice, Boro

Location: BRRI farm, Gazipur

Start Date: 00-00-2013

End Date: 00-00-2014

Program Area: Crop-Soil-Water Management

Commodity: Fertilizer

Objectives:

To find out optimum dose of N P C for rice cultivation and
To compare the effectiveness of the fertilizer with other common fertilizers.

Methodology:

A field experiment was conducted in Boro 2013-14 at BRRI farm, Gazipur. The experimental field was clay loam in texture and deficient in soil available P (<2 mg/kg). Other nutrients status was: 1.15% organic carbon, 0.14% total N, 0.16 cmol/kg exchangeable K, 17 mg/kg available S and 4 mg/kg available Zn (DTPA extracted). Chemical composition of NPC is: 20.90% total N, 19.30% urea N, 1.60% ammoniacal N, 10.20% total P₂O₅, 9.70% citrate soluble P₂O₅, 9.20% water soluble P₂O₅, 16.20% SO₃ and 1% water. Treatments used were: T₁ = control (no P fertilizer), T₂ = TSP @ 7.5 kg P/ha, T₃ = NPC @ 7.5 kg P/ha, T₄ = TSP @ 15 kg P/ha and T₅ = NPC @ 15 kg P/ha. The treatments were assigned in a RCB design with three replications. Unit plot size was 6 × 3 m. All treatments received a blanket dose of N-K-S-Zn @ 150-60-20-4 kg/ha, respectively. As NPC contain 20% N, therefore, N dose was adjusted (116 kg/ha for T₃ and 83 kg/ha for T₅) from blanket N dose. All fertilizers except urea were applied at final land preparation. Urea was applied in three equal splits at basal, at active tillering stage and at 7 days before PI. As NPC contains 20% N, first split of urea was avoided in treatments receiving NPC and 2^nd and 3^rd splits of urea were applied like other treatments. Around 45 days old seedlings of BRRI dhan29 was transplanted on 1^st week of February. Irrigation, weeding and other cultural management practices were done equally as per requirement. Crop was harvested at maturity on last week of May from 5 m² area at 15 cm above ground for grain yield. However, 16 hills from each plot were harvested at ground level for straw yield data. Grain yield was recorded at 14% moisture content and straw yield as oven dry basis.

Source of Information: Proceedings of the BRRI Annual Internal Review, 2013-14

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Grain and straw yields in BRRI dhan29 were significantly influenced by P application from TSP and NPC, whereas tiller and panicle number did not vary significantly. At lower P doses (7.5 kg P/ha), significantly higher grain yield was obtained with TSP treatment (5.18 t/ha) over P control. On the other hand, NPC treatment (7.5 kg P/ha) produced 4.77 t/ha over P control. About 1.27 t/ha yield increased with NPC application @ 7.5 kg P/ha over P control treatment. Contribution of NPC and TSP @ 7.5 kg/ha was statistically similar in terms of grain yield. Application of 15 kg P/ha, grain yield in TSP plot was 5.75 t/ha (increased 64% over control) and in NPC, it was 5.21 t/ha (increased 49% over control). Although TSP gave around 0.5 t/ha yield increase over NPC, but the difference was insignificant. Similar trends were observed for straw yield.

Knowledge Management: Report/Proceedings