Rice Yield Potential under Unfavorable Soil Ecosystems in Bangladesh

Journal Title: Asian Journal of Soil Science and Plant Nutrition - Year 2017, Vol 1, Issue 1

Abstract

Unfavorable ecosystems in Bangladesh are under intense pressure of crop production and climate change impact; although the relationships of indigenous soil nutrients ratios with crop performance are yet to be fully explored. Experiments were conducted under submergence and cold prone areas (agricultural ecological zone, AEZ-3), drought and cold prone areas (AEZ-26), non-saline tidal flood ecosystem (AEZ-13), char and saline prone ecosystem (AEZ-18) and haor ecosystem (AEZ-21) for evaluating rice grain yield with native nutrients ratios. Synergistic and antagonistic relationships were observed in different AEZ depending on indigenous nutrient ratios. The Ca:P and N:Zn ratios were playing significant negative role with rice yield in wet season. In dry season, P:K ratio was acting antagonistically in AEZ-18, AEZ-3 and AEZ-26 but K:Mg, Ca:Zn S:Zn P:Zn were playing synergistic role in the same localities. The C:K ratio was playing antagonistic role with dry season irrigated rice yield in AEZ-13 and AEZ-21. Dry season irrigated rice grain yield was 13-27% lower in AEZ-26 than others AEZ because of variations in negative ratios of nutrients. Application of 187-13-75-15-1.1, 174-27-19-840, 162-11-58-11-0, 180-24-14-15-4 and 144-36-5-3-0 kg/ha of N-P-K-S-Zn, respectively for Rangpur, Rajshahi, Barisal, Sonagazi and Habiganj improved dry season rice yield significantly in all AEZ except AEZ-18 compared to indigenous soil fertility. Soil separates showed variable relationships with indigenous nutrient ratios in different AEZ. It is concluded that indigenous soil nutrient ratios play a vital role in improving rice yield under unfavorable ecosystems.

Authors and Affiliations

Jatish Chandra Biswas, Md. Mozammel Haque, P. K. Saha

Keywords

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  • EP ID EP337940
  • DOI 10.9734/AJSSPN/2017/35497
  • Views 99
  • Downloads 0

How To Cite

Jatish Chandra Biswas, Md. Mozammel Haque, P. K. Saha (2017). Rice Yield Potential under Unfavorable Soil Ecosystems in Bangladesh. Asian Journal of Soil Science and Plant Nutrition, 1(1), 1-10. https://europub.co.uk/articles/-A-337940