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Integrated Nutrient Management for Boro-t.aman Rice Cropping Pattern in the Level BARInd Tract Area (aez-25)

M. R. A. Mollah
Agricultural Research Station, Bangladesh Agricultural Research Institute (BARI), Seujgari, Bogra-5800

K. M. Khalequzzaman
Agricultural Research Station, Bangladesh Agricultural Research Institute (BARI), Seujgari, Bogra-5800

M. A. Rahim
Agricultural Research Station, Bangladesh Agricultural Research Institute (BARI), Seujgari, Bogra-5800

M. Asaduzzaman
Agricultural Research Station, BARI, Shibpur, Narsingdi

M. N. A. Siddique
On Farm Research Division, BARI, Shampur, Rajshahi. Bangladesh

Abstract/ Executive Summary:

The experiment was conducted at Joypurhat MLT Site, Bogra (AEZ-25) during 2001-03 to find out a different nutrient management packages for Boro-T. Aman rice cropping pattern. The experiment was laid out following RCBD with six treatments including one farmers’ practice and one fertilizer control in six dispersed replications. The other four treatments were soil test based (STB) fertilizer dose for moderate yield goal (MYG) and high yield goal (HYG), STB based fertilizer dose for HYG plus cowdung (5 t/ha) and fertilizer dose as per country’s Fertilizer Recommendation Guide ( FRG ’97). For the average result of three consecutive years it was indicated that the highest grain yield of Boro (5.487 t/ha) and T.aman (4.75t/ha) were obtained from IPNS. The highest average gross margin was Tk.33556 /ha and MBCR (1.65) in Boro rice over control. The highest gross margin (Tk. 31276 /ha) and MBCR (1.93) of T.aman rice were also obtained from IPNS over control. So the IPNS was economically and agronomically profitable dose of fertilizer for the level Barind Tract area (AEZ-25).

Keywords: High yield goal, Moderate yield goal, Boro, T.aman, Level Barind Tract, yield

Location: Joypurhat MLT Site, Bogra

Start Date: 00-00-2001

End Date: 00-00-2003

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

To find out a different nutrient management packages for Boro-T.Aman rice cropping pattern.

Methodology:

The experiment was conducted at MLT site Joypurhat under Bogra during 2001, 2002 and 2003 in AEZ-25. Before starting the experiment, one dominant cropping pattern Boro–T.aman was selected. It was done following discussion with local farmers, DAE personnel and available secondary information. The experimental site was medium high land and it belongs to the agro ecological zone Level Barind Tract (AEZ-25). Annual rainfall of the site was irregular and varied from 1400-2400 mm. Average maximum temperature was 31.5oc and average minimum temperature was 21.15^oc. Before conducting the experiment soil samples were collected from farmers’ field and then sent to the laboratory for chemical analysis. The chemical properties of the soil are presented. The experiment was laid out following RCBD with six treatments in six dispersed replications. The unit plot size was 10m X 10 m constant for the whole cropping pattern. After getting the results of soil analysis value fertilizer doses were estimated with the help of soil analysis value as per treatment concerned. The estimated fertilizer doses for Boro and T.aman rice were presented. Six different fertilizer packages were tested and the details of the treatments were as follows: T₁ (ED₁) = Estimated inorganic fertilizer dose for moderate yield (MYG), T₂ (ED₂) = Estimated inorganic fertilizer dose for high yield (HYG), T₃ (IPNS) = Integrated nutrient management for high yield goal (cowdung was used), T₄ (FRG’97) = Fertilizer does as per BARC Fertilizer on Recommendation Guide’ 97. T₅ (FP) = Local farmers practice (Average of 40 farmers data), T₆(control) = Absolute control. For Boro rice (variety BRRI dhan-29), the land was puddled well, 45-48 days old seedlings of Boro rice were transplanted on 24-26 January, 2001, 27-31 January, 2002 and 3-10 February, 2003, respectively in the three consecutive years. The seed rate was 50 kg/ha during three years. Furadan 15 kg/ha was used at rapid tillering stage. The crop was harvested on 14-17 May, 2001, 17-22 May, 2002 and 18-27 May, 2003, respectively. For T.aman rice (variety BR-11), the land was puddled well. 30-35 days old seedling were transplanted on 25-28 July, 2001, 16-24 July, 2002 and 20-26 July, 2003 in the year of 2001,2002 and 2003 respectively. The seed rate was 50 kg/ha during those years. Furadan at the rate of 15 kg/ha was used at rapid tillering stage. The crop was harvested on 24-28 November, 2001, 14-20 November, 2002 and 18-24 November, 2003 in the three consecutive years. In both Boro and T.aman rice entire TSP, MP, Gypsum and 1/3rd urea were applied as basal. The second 1/3^rd urea was applied at rapid tillering stage and the rest 1/3^rdurea was applied before panicle initiation stage. In every year Boron and Zincsulphate were applied only in Boro rice in full dose during land preparation. Data on yield and yield contributing characters of Boro and T. Aman rice were recorded and analyzed statistically. Statistical analysis for F-test was performed and means were compared by DMRT. Cost and return analysis was done for net return and marginal benefit cost ratio for different treatments.

Source of Information: Int. J. Sustain. Crop Prod. 2(1):23-27, 2007

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The highest average grain yield of Boro and T. Aman rice were obtained from IPNS due to positive effect of organic recycling which improved nutrient uptaking system by the plants for a long period. Considering the yield and soil fertility for sustaining crop production, IPNS practice can be recommended for farmers’ use in the Level Barind Tract area (AEZ-25).

Knowledge Management: Journal