Long-term bed planting effect on stabilizing productivity of rice and wheat in a drought prone area of Bangladesh

Authors

  • M Ilias Hossain Senior Scientific Officer (Agronomy), Bangladesh Agricultural Research Institute, Gazipur
  • MI Hossain Principal Scientific Officer (Agril. Engg.), Bangladesh Agricultural Research Institute, Gazipur
  • MRI Mondal Director General, Bangladesh Agricultural Research Institute, Gazipur
  • MK Sultan Director (Research) of Bangladesh Agricultural Research Institute, Gazipur
  • M Gathala Cropping System Agronomists, CIMMYT
  • TP Tiwary Cropping System Agronomists, CIMMYT

DOI:

https://doi.org/10.3329/baj.v17i1.23673

Keywords:

Bed planting, cropping system, productivity, sustainable, drought

Abstract

The systems productivity, soil fertility and N use efficiency were evaluated in a drought area of Rajshahi under five N fertilizer levels (0, 40, 80, 100 and 120 % N of the recommended dose, two straw retention (SR) (0 and 30%) and two tillage options [raised bed and conventional tillage (CT)] in a long term bed planting experiment with Rice-Wheat (RW) systems. The findings revealed that the permanent raised beds (PRB) with 30% straw retention had the highest productivity for all the three crops in the sequence. Within each N rate the total system (rice-wheat-mungbean) productivity was higher with 30% SR on PRB and the least in CT with 0 % SR. At 80 % of recommended fertilizer N rate, mean annual system productivity was 12.8 t ha-1 for PRB with 30% SR, 11.2 t ha-1 with PRB on 0% SR and 10.3 t ha-1 with CT without straw. N uptake and use efficiency increased with increasing N levels with bed planting up to 120% N application (120 kg N ha-1) in wheat, both 100% (80 kg N ha-1) in rice and (20 kgN ha-1 ) in mungbean for all the years. System productivity in N unfertilized plots increased when straw was retained. The results suggest that N fertilizer rates can be reduced when straw is retained. Soil organic matter in surface soil layers of the PRB had increased by 0.72% after eight years (8 rice-wheat-mungbean crop cycles) with 30% SR. It may be inferred that straw retention is an important component of soil management and may have long term positive impacts on soil quality compared with conventional tillage with 0 % SR. The combination of PRB with nutrients and residues retained appeared to be a very promising technology for sustainable intensification of RW systems in the drought prone area of Bangladesh.

Bangladesh Agron. J. 2014, 17(1): 23-32

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Published

2015-06-15

How to Cite

Hossain, M. I., Hossain, M., Mondal, M., Sultan, M., Gathala, M., & Tiwary, T. (2015). Long-term bed planting effect on stabilizing productivity of rice and wheat in a drought prone area of Bangladesh. Bangladesh Agronomy Journal, 17(1), 23–32. https://doi.org/10.3329/baj.v17i1.23673

Issue

Vol. 17 No. 1 (2014)

Section

Original Articles

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