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Fertilizer Management on Pulses-based Cropping Patterns

A.F. Mahbubur Rahman
Bangladesh Agricultural Research Institute, Joydebpur, Bangladesh

M.S. Islam
Bangladesh Agricultural Research Institute, Joydebpur, Bangladesh

M.A. Rouf
Bangladesh Agricultural Research Institute, Joydebpur, Bangladesh

Abstract/ Executive Summary:

Two field experiments have been conducted at the Regional Agricultural Research Station, Ishurdi, since 1983, to determine the effects of pulses on soil fertility within different cropping patterns. These were: wheat-mung bean-T. Aman (rainy-season) rice and mustard-mung bean-t. Aman. In both the mung bean (Vigna radiata (L.) Wilczek) cultivar, Mubarik was introduced between two cereal crops during the early monsoon (kharifl) (March-May) season. In the pattern I, using N-0 and 15, P-0,30 and 60 and K-0, 15 and 30 kg ha-1, a selected set of 12 treatments was tested on Mubarik and the largest grain yield of 1.84 t ha-1 was obtained by the treatment N-15, P-60 and K-15 in 1984/85. In pattern 2, Mubarik was tested against 10 treatment combinations using N-0 and 15, P-0,30 and 60 kg ha-1 and the highest grain yield of 1.8 t ha-1 were recorded from the treatment N-15, P-30 in 1984/85. In both patterns, a huge amount of biomass was added to the soil. This ranged from 9.3 to 12.7 t ha-1 in pattern 1 and 3.7 to 5.1 t ha-1 in pattern 2. The biomass was useful in maintaining soil fertility. The inclusion of pulses in the cropping pattern reduced the use of fertilizers for the next crop. Farmers can produce enough pulses in their fallow lands for their own consumption and marketing. Similar studies will be carried out with other cultivars of mung bean and other pulses.

Keywords: Fertilizer Management, Pulses-Based, Cropping Patterns

Location: Regional Agricultural Research Station, Ishurdi

Start Date: 00-00-1983

End Date:

Program Area: Crop-Soil-Water Management

Commodity: Pulses

Objectives:

This study was undertaken to determine the effect of mung bean (Vigna radiata (L.) Wilczek) on two cropping patterns involving wheat (Triticum aestivum L.) and t.aman (rainy-season) rice and mustard (Brassica campesths L.) and t.aman.

Methodology:

Both experiments were planned in a randomized complete block design replicated three times. The unit plot size was 6m x 5m. In pattern 1 there were 12 treatment combinations while in pattern 2 there were 10. The spacing was 30 cm between rows in both cases. In pattern 1 there were 2 doses of nitrogen (O and 15 kg ha-1), 3 doses of phosphorus (O, 30, and 60 kg ha-1), and 3 doses of potassium ( 0, 1 5, and 30 kg ha-1). In pattern 2 there were 2 doses of nitrogen (O and 15 kg ha-1) and 3 doses of phosphorus (0, 30 and 60 kg ha-1). All fertilizers were applied at the time of final land preparation. The experiments were sown on 9 March 1988 and 6 April 1988 and the area of 20 m² was harvested at maturity on 27 March 1988 for pattern 1 and 9 June 1988 for pattern 2. Biomass yield and grain yield were recorded along with other necessary data.

Source of Information: Advances in Pulses Research in Bangladesh Proceedings of the Second National Workshop on Pulses 6-8 Jun 1989 Joydebpur, Bangladesh

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Economic studies of these two cropping patterns were performed for the last 3 years. For this, we considered only the prices of the fertilizers, all other factors being constant. An economic study of these cropping patterns indicated that in pattern 1 a high cost-benefit ratio of 1:9.34 was achieved. In cropping pattern 2 the ratio was 1:6.35.

Besides these experiments, the On-Farm Research Division has carried out a large number of cropping pattern experiments at different Farming Systems Research (FSR) Sites. The results of the cropping patterns over a 3-year period indicated significant differences among treatments. The returns from these patterns are very encouraging and fanners are accepting the patterns. Although the patterns under consideration are becoming popular among the farmers still there is a possibility that they may change their decision. Once irrigation becomes available, farmers usually will grow rice for their own family use. Hopefully, the success of these patterns will reverse this trend.

Knowledge Management: Report/Proceedings