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

Increasing Yield and Agronomic Efficiency of Boro Rice (oryza Sativa) by Fertigation with Bed Planting Compared with Conventional Planting

Md. Halim Mahmud Bhuyan
Department of Farm Machinery, Chuadanga Technical School and College, Chuadanga 7200, Bangladesh

Most. Razina Ferdousi
Islamia Academy High School & Agriculture College, Bagha, Rajshahi 6280, Bangladesh;

Md. Toufiq Iqbal*
Department of Agronomy and Agricultural Extension, University of Rajshahi, Rajshahi 6205, Bangladesh

Abstract/ Executive Summary:

The fertigation technique with raised bed planting for transplanted boro (winter, irrigated) rice production is a research focus nowadays. A field experiment compared two cultivation methods: the fertigation technique within raised bed planting on boro rice, and fertilizer broadcasting in the conventional planting method. Compared to conventional fertilizer broadcasting, results showed that the new fertigation technique in raised bed planting increased grain yield of transplanted boro rice by up to 17.04%. It yielded a greater number of panicles per square meter, a greater number of grains per panicle, higher 1000-grains weight, and better plant growth attributes. Sterility percentage and weed infestation were lower. Thirty six percent of irrigation water and time for application could be saved. Water use efficiency for grain and biomass production was higher. The agronomic efficiency of nitrogen (N) fertilizer was significantly higher. This study concluded that fertigation in raised bed planting for transplanted boro rice is a new approach with higher yield and higher fertilizer and water use efficiency than the existing agronomic practice in Bangladesh.

Keywords: Boro rice, Fertigation with bed planting, De-nitrification, Water use efficiency, Harvest index, Irrigated water management

Location: Chuadanga District of Bangladesh

Start Date:

End Date:

Program Area: Crop-Soil-Water Management

Commodity: Rice, Fertilizer

Objectives:

The present study was undertaken to achieve the following objectives for transplanted boro rice production:

to explore the comparative advantages of using N fertilizer through fertigation in raised bed over N-broadcast in conventional planting,
to examine the differences in yield and growth response between these two techniques, and
to compare the water use efficiency and agronomic efficiency of N using the two ways

Methodology:

The field experiment was carried out on a farm field in the Chuadanga District of Bangladesh, during the boro growth period (December-May). Climate: The meteorological data for the cropping season were recorded at local weather station, the Chuadanga district of Bangladesh. The rainfall during the growth period of boro rice totaled 128 mm. Soil Soil samples: (0-15 cm depth) were collected from the field for physico-chemical analysis one week before transplanting. Soil samples were analyzed for particle size distribution by the hydrometer method. Soil pH was measured in water (Soil water ratio 1:1) and electrical conductivity of the soil suspension was measured using conductivity meter.

Experimental design: The experiment was laid out in a randomized complete block design (RCBD) with three replications. The entire experimental area was divided into three blocks representing three replications to reduce soil heterogenic effects and each block was divided into three unit plots with raised bunds as per treatments. Thus the total number of unit plots was 9. The size of each unit plot was 4 m × 3.5 m. Plots were separated from one another by ails of 0.25 m. Each unit block was separated from others by 1 m drains. Treatments were randomly distributed within the blocks. One control treatment with three replications was undertaken in this study. However, only yield data were undertaken to calculate agronomic efficiency. The overall treatments structure of this experiment were mentioned as below in land preparation was done by ploughing and cross ploughing by two-wheel power tiller with two laddering two days before transplanting. One day before transplanting the plots were prepared as per experimental design. Bed preparation: Raised bed and furrows were made manually by spade following the conventional land preparation. According to the treatments 60 cm wide (centre to centre of furrows) beds were made. For the 60 cm bed, the top of the raised bed was 35 cm and furrow between beds was 25 cm. The beds were made one day before transplanting the plots according to layout of the experiment. The height of beds was 15 cm. Transplanting of rice seedlings: Two 45-day-old seedlings per hill of BRRI dhan28, a popular boro (winter, irrigated) rice variety were transplanted. The row to row and hill to hill spacing were 25 cm and 20 cm for both beds and flat. Only two rows of rice were planted on each bed and plant density was much higher than the conventional treatment. Fertilizer application in conventional planting: Fertilizer was applied at the following rates: N=120, P=14, K=36, Sodium (S)=1.0 kg/ha applied as urea, Triple Super-Phosphate (TSP), Murate of Potash (MP), gypsum and Zinc Sulphate (ZnSO₄₎, respectively. TSP, MP, gypsum and ZnSO₄ were applied as a whole at the final land preparation as basal dose in the plots with the conventional treatment. Urea was broadcasted in three equal splits at the 15th, 30th, and 50th day after rice transplanting in the conventional planting method. Fertilizer application in fertigation technique with raised bed planting: In the plots with fertigation in raised bed planting the basal doses were broadcasted before transplanting on top of the beds. Urea was applied through the irrigation water in three equal splits at the 15th, 30th, and 50th day after transplanting of rice in fertigation with the raised bed planting method.

Source of Information: Int J Agric & Biol Eng, 2014; 7(5): 34-47

Article Link (Online Journal): https://www.ijabe.org/index.php/ijabe/article/view/1000

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

This research demonstrated that fertigation with bed planting increased grain yield by 17.04% for boro (winter, irrigated) rice compared to fertilizer broadcasting with the conventional planting method. Fertigation in raised bed produced a higher number of panicles per unit area, a higher number of grains per panicle and greater 1000-grain weight for transplanted boro rice which ultimately gave a higher grain yield than the conventional fertilizer broadcasting. This study also concluded that fertigation in raised bed planting proved more beneficial than conventional planting, especially with respect to grain yield, yield attributes, agronomic efficiency of N and water use efficiency. Fertigation in raised bed planting is considered the most effective method to decrease N losses and thereby to increase fertilizer use efficiency. Compared to conventional fertilizer broadcasting, fertigation in raised bed planting saved irrigation water by 36.33% and increased irrigation efficiency. Bed planting with fertigation provided less weed density and lower dry biomass than the conventional cultivation method. These findings concluded that water use efficiency for grain and biomass production was higher in fertigation with bed planting than fertilizer broadcasting of the conventional method. The agronomic efficiency of N fertilizer was also significantly higher in fertigation of bed planting than the conventional way.

Knowledge Management: Journal