Working Group 3
Salt-affected lowlands

Saline conditions affect rice lands in coastal areas due to tidal intrusion of seawater, and also in inland areas where bedrock is rich with sodium salts or soluble salts accumulated through the river streams or canal. In addition to high salt content, rice suffers from imbalances in nutrients such as phosphorous (P) and zinc (Zn). Compounding problems like acidic soils, drought and submergence in some areas, create multiple problems for farmers seeking out a viable livelihood. Two promising lines of inquiry involve, first, the introduction of salt-tolerant genes into popularly grown varieties, and, second, the development of optimum nursery and natural resource management practices that make seedlings more robust to withstand these stresses

Research themes
  • Develop salt tolerant varieties for coastal and inland saline areas and also for sodic soils.

  • Biophysical and socioeconomic characterization of target sites in order to monitor environmental and social effects of new technologies.

  • Investigating rice based cropping sequences for alternate post-rice crops can enhance farmers' income.

  • Improve nursery and seedling management options for enhancing crop establishment with robust seedlings.

  • Investigate nutrient management options for transplanted rice.

  • Achievements
  • Identification of the Saltol gene conferring saline tolerance, and Pup1 gene that confers P deficiency tolerance.

  • Farmer inventory documents of new and traditional technologies suited to salt-affected areas.

  • Working Group Leader Dr. S. G. Sharma / Dr. Rakesh Kumar Singh
    Key Site Cuttack, India; Central Rice Research Institute (CRRI), Dr. DP Singh
    Satellite Site Faizabad, India; Narendra Dev University of Agriculture and Technology (NDUAT), Dr. PC Ram

    Satkhira, Bangladesh; Bangladesh Rice Research Institute (BRRI), Dr. MA Salam
      Tra Vinh, Vietnam; Cuu Long Rice Research Institute, Dr. Nguyen Thi Lang