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Yield Response of Chili and T. Aman Rice to Npk Fertilizers in Gances Tidal Floodplain

M. S. Islam
Scientific Officer
On-Farm Research Division, Bangladesh Agricultural Research Institute, Patuakhali

M. I. A. Howlader
Scientific Officer
On-Farm Research Division, Bangladesh Agricultural Research Institute, Patuakhali

S. Rafiquzzaman
Senior Scientific Officer
Pulse Research Sub-Station, Bangladesh Agricultural Research Institute, Madaripur, Bangladesh

H. M. K. Bashar
Scientific Officer
On-Farm Research Division, Bangladesh Agricultural Research Institute, Patuakhali

M. H. Al-Mamun
Scientific Officer
On-Farm Research Division, Bangladesh Agricultural Research Institute, Patuakhali

Abstract/ Executive Summary:

An experiment was conducted at farmers’ field of Farming System Research and Development (FSRD) site, Lebukhali under Patuakhali district during 2001-2002, 2002-2003 and 2003-2004 to determine the response and the optimum rate of nutrients (NPK) for Chili- Fallow-T. Aman cropping pattern under AEZ-13. Different three levels of NPK with control were assigned in randomized complete block design with 5 dispersed replications. Average of three years study reveals that a considerable response of Chili and T. Aman rice to N, P and K was observed. The results indicated that fertilizer nutrient dose that maximized yield of Chili and T. Aman rice were 119-97-92 kg/ha and 63-20-37 kg/ha NPK, respectively while 117-93-89 kg/ha NPK for chili and 60-19-36 kg/ha NPK for T. Aman rice were in respect of yield and economics.

Keywords: Chilli, T. aman, Yield response, Fertilizer

Location: Field of Farming System Research and Development (FSRD), OFRD, BARI, Patuakhali

Start Date: 00-00-2001

End Date: 00-00-2004

Program Area: Farming System

Commodity: Fertilizer

Objectives:

To determine an economically optimal dose of fertilizer nutrients for Chili- Fallow-T. Aman cropping pattern at Patuakhali under AEZ-13

Methodology:

The experiment was conducted at farmer’s field of Farming System Research and Development (FSRD) site, Lebukhali under Patuakhali District during 2001-2002, 2002-2003 and 2003-2004. The land type was medium high land with pH 5.3. The initial soil nutrient status of the experimental plot was total nitrogen (N) 0.08%, P, S and Zn level 4.4, 33.46 and 3.69 μg g^-1 soil, respectively and K level 0.28 meq 100g^-1 soil. Soil organic matter was 1.44%. The experiment was laid out in a randomized complete block (RCB) design with five dispersed replications. The unit plot size was 5m × 4m. The crop variety was local for Chili and BRRI dhan23 for T. Aman rice. Four different levels of N, P and K for Chili and T. Aman were tested on the basis of soil analysis. The experiment was initiated with Chili. 30 days old Chili seedling was transplanted on 14-18 January with a spacing of 30 cm × 20 cm and was harvested two times on 05-25 May. 40 days old seedling of T. Aman rice was transplanted on 19-24 August with a spacing of 25 cm × 15 cm and was harvested on 23-30 December. Fertilizer doses were calculated according to initial soil status of the experimental plots using Fertilizer Recommendation Guide 1997. Entire amount of P and K fertilizers was applied as basal dose both in Chili and T. Aman rice at the time of final land preparation. In Chili urea was applied as top dressing at 25, 50 and 70 days after transplanting (DAT) and in T. Aman it was applied in three equal splits as top dressing at 15 DAT, at maximum tillering stage and before panicle initiation. The source of N, P and K was urea, TSP and MP, respectively. Weeding and other intercultural operations were done as and when necessary. No disease or pest was reported in any of the crops. Data on yield and yield attributes were recorded and analyzed statistically. Regression analysis was done and optimum and economic dose of fertilizer were calculated using the formula Y = -b/2c and Y = 1/2c (Pf/Py - b), respectively from the response curve.

Source of Information: J.Soil.Nature. 2 (1):07-13, (2008)

Article Link (Online Journal):

Funding Source:

1. Danish International Development Agency (DANIDA)

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The cumulative results indicated that fertilizer nutrient dose that maximized yield of Chili and T. Aman rice were 119-97-92 kg/ha and 63-20-37 kg/ha NPK, respectively while 117-93-89 kg/ha NPK was profitable for Chili and 60-19-36 kg/ha NPK for T. Aman rice in respect of yield and economics. The present recommended doses were relatively lower but judicious that ensure higher yield than that of farmers’ traditional practices and it will be helpful to improve soil health for sustainable higher yield. So, 117-93-89 kg/ha NPK for Chili and 60-19-36 kg/ha NPK for T. Aman rice could be proposed for recommendation for Patuakhali in Ganges Tidal Floodplain area (AEZ-13).

Knowledge Management: Journal