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

Contribution of Tidal Submergence to Phosphorus Nutrition and Yield of Rice

M.A. Haque
Department of Soil Science, Patuakhali Science and Technology University, Dumki, Patuakhali-8600

Abstract/ Executive Summary:

Two pot and two field experiments were conducted at Patuakhali Science and Technology University research farm to investigate the contribution of tidal submergence to phosphorus nutrition and yield of rice. Pot and field experiments were conducted in the Aus and Aman seasons of 2009, respectively. The factorial experiments include two levels of water source- i) tidal water and ii) ground water, and three levels of fertilizers- i) absolute control (no fertilizer), ii) NK (P omission) and iii) NPK (P addition). The rice varieties used were BRRI dhan27 (HYV) and Local Mala (Traditional variety) in Aus season and BR23 (HYV) and Lalmota (Traditional variety) in Aman season. A general increase in growth, yield and yield contributing parameters were found due to irrigation with tidal water. Tidal water contributed about 21 (BR23) and 7 (Lalmota) % higher grain yield in Aman season 2009 and about 2 g biomass yield per pot (both BRRI dhan27 and Local Mala) in Aus season of 2009 compared to ground water. Phosphorus content of rice grain and straw was always higher when plants are irrigated with tidal water. In general tidal submergence increases P uptake of rice. Phosphorus uptake from tidal water treatments increased when plants were supplied with N and K fertilizer. Tidal submergence contributed about 5-6 kg P/ha in P omission plot, and about 12-14 kg P/ha in plots with added P.

Keywords: Phosphorus, rice, tidal submergence

Location: Research farm, Patuakhali Science and Technology University

Start Date: 00-03-2009

End Date: 00-11-2009

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

To investigate the contribution of tidal submergence to phosphorus nutrition and yield of rice

Methodology:

Four experiments- two in Aus season and two in Aman season of 2009 were conducted at Patuakhali Science and Technology University research farm. The experiments of Aus season were conducted in pots and that of Aman season in fields. Each experiment includes two factors; first factor ‘source of irrigation water’ consisting two levels: i) tidal water and ii) ground water, second factor ‘fertilizer’ consisting three levels: i) absolute control (no fertilizer), ii) NK (P omission) and iii) NPK (P addition). Thus six treatment combinations were used in the experiments. Each treatment was replicated three times. In Aus season, BRRI dhan27 was used in one experiment and a local variety Mala was used in other experiment. In Aman season, BR23 was used in one experiment and Local Lalmota was used in another experiment.

In case of pot experiments, six kg soil was taken in each of 18 pots. The initial soil contains 0.14% total N, 1.5 ppm available phosphorus, 0.28 me/100g soil exchangeable potassium, 78.3 ppm available S, 2.84% organic matter and pH of 5.4. The sprouted seeds of the rice varieties were sown on 06.5.2009 on puddled soil in such a way that each pot received four hills and each hill received 3 adequately sprouted seeds. Fertilizer application was made with 100, 10 and 40 mg/kg soil of N, P and K, respectively. Phosphorus and K were applied during puddling and N was applied in two equal splits at 15 and 30 days after sowing. Fertilizers were allocated according to the treatments. Adequate amount of tidal and ground water was applied in each pot according to the treatment to nourish the crop. After 50 days of sowing the plants were harvested and subsequent physical and chemical data were recorded.

The initial soil of the field experiments contains 0.09% total N, 12.6 ppm available phosphorus, 0.39 me/100g soil exchangeable potassium, 46.5 ppm available S, 1.72% organic matter and pH of 7.5. Thirty five days old seedlings were transplanted on 3rd September 2009 with the plant spacing of 20 × 20 cm. Three to four seedlings were transplanted in each hill. Fertilizer application was made with 80, 20 and 60 kg/ha of N, P and K, respectively as per the treatments. Phosphorus and K were applied during puddling and N was applied in two equal splits at 15 and 30 days after transplanting. Irrigation was done with tidal and deep tube-well water. Plants were harvested at maturity and subsequent measurement of plant height, tillers/hill, grains/panicle and grain and straw yield was done. Chemical analysis of grain and straw were done using standard methods. The data obtained in the experiments were statistically analysed using MSTAT computer software program.

Source of Information: J. Bangladesh Agril. Univ. 8(2): 207–212, 2010

Article Link (Online Journal):

Funding Source:

1. University Grant Commission

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Tidal submergence is an important source of phosphorus. It increases all the growth parameters along with yield of rice. It supplies considerable quantities of phosphorus, however, it could not meet the total phosphorus requirement of rice.

Knowledge Management: Journal