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Crop Productivity as Influenced by Soil Test Based Fertilizer Management in Six Cropping Patterns at Farmers' Field

J. C. Biswas
Agronomy Division, Bangladesh Rice Research Institute, Gazipur-1701, Bangladesh.

M. R. Islam
Department of Agricultural Extension, Mymensingh, Bangladesh.

M. J. Islam
Department of Agricultural Engineering, Bangladesh Agricultural University, Mymensingh.

Abstract/ Executive Summary:

Experiments with six cropping patterns were conducted at farmers’ field to minimize yield gap between researcher’s and farmers’ crop management and to diffuse soil test based (STB) fertilizer packages for growing crops. Grain yield of Boro (dry season irrigated rice) and T. aman (rainfed lowland rice) rice increased by 20-27% and 28-62%, respectively compared to farmers’ practice (FP) in Boro-GM-T, aman pattern. Total rice yield was increased by about 28-51% in Boro-T. aus (premonsoon rainfed rice)- T. aman pattern with STB fertilizer management compared to FP. In other patterns, grain yield of rice was increased by 28-57% compared to FP. Increase in jute yield was 31-62% in wheat-jute- T. aman pattern; whereas, grain yield of wheat increased by 30-118% compared to FP in the same pattern. The grain yield increase of wheat was 141.2% in wheat-T. aus-T. aman pattern compared to FP. In comparison to FP, there was about 48% increase in potato yield with high fertilizer management in Potato-jute –T. aman pattern. The Agronomic use- Efficiency (AE) varied from 78-106 and 16-23 kg grains kg^-1 P and K, respectively. The highest AE was 196 kg grains kg^-1 added S. Considering high yield goal of crops, the highest added benefit was obtained from Potato-jute –T. aman pattern followed by wheat-jute-T. aman and wheat-T. aus-T.aman, respectively because of additional fertilizer use compared to FP. About 42% farmers’ adopted STB fertilizer technology in the study area.

Keywords: Soil test based fertilizer management, Cropping pattern, Crop productivity.

Location: Ishwargonj, Mymensingh.

Start Date: 01-01-2003

End Date: 30-06-2003

Program Area: Crop-Soil-Water Management

Commodity: Fertilizer, Fertilizer

Objectives:

To evaluate six cropping patterns together with soil test based fertilizer management at farmers’ field for determination of crop productivity and farmers’ response to new technology.

Methodology:

The experiment was conducted at farmers’ field, Ishwargonj, Mymensingh, Bangladesh. The site belongs to agricultural Ecological Zone 9 having subtropical climate. Six cropping patterns, viz., Boro (dry season irrigated rice) – GM (Sesbana sp.)- T. aman (rainfed lowland rice), Boro-Fallow-T.aman, Boro-T.aus (premonsoon rainfed rice)- T.aman, wheat (dry season irrigated crop)-jute (rainfed unland crop)-T.aman, wheat-T.aus-T.aman and potato (dry season irrigated crop)-jute-T.aman were evaluated under three fertilizer packages. The crop varieties used were BR14, kanchan, cardinal, CVE3, BR2 and BR11 for Boro, wheat, potato, jute,T.aus and T.aman respectively. However, in wheat - T.aus - T.aman pattern BRRI dhan32 was used as T.aman crop. A Randomized Complete Block Design was used. The treatments dispersed at farmers’ fields were considered as replication. Standard production packages were followed for growing the crops. Pre-tested structured questionnaire was used for determination of technology adoption rate by the farmers’ in the same experimental site. Analysis of variance of the measured parameters of each crop was performed and treatment means were compared using Duncan’s Multiple Range Test at 5% level of probability.

Source of Information: SAARC JOURNAL OF AGRICULTURE, Vol. 5, Issue 1, 2007, pp. 33-42, ISSN 1682-8348, SAARC Agricultural Information Centre.

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Grain yield of rice, jute, wheat and potato could be increased by about 20-51%, 31-62%, 30-118% and 19-48%, respectively following Bangladesh Agricultural Research Council recommended fertilizer management compared to farmers’ fertilizer dose. However, inclusion of a legume crop in a pattern should be considered to sustained soil productivity. The highest agronomic efficiency (195.6 kg) was observed when S fertilizer was used in combination with N, P and K fertilizers indicating that proper care should be taken for S fertilizer application. The highest additional profit was obtained from Potato-Jute-T.aman pattern. However, the price of potato at the farm gate is very low in many years because of bumper production. Moreover, cold storage facilities are still inadequate in Bangladesh. So, infrastructure development and ensured market policy is needed before greater diffusion of Potato-Jute-T.aman pattern. Although the benefit of STB fertilizer management was high, the technology was diffused to about 8% of neighboring farmers emphasing more concerted efforts to diffuse agricultural technology to increase productivity at national level.

Knowledge Management: Journal