Abstract
A large area of Pakistan is suffering from salinity problem. Being situated in arid and semiarid region, the process of salinization and sodification remains in progress. Bringing these marginal lands into agriculture production is essential from food security perspectives for rapidly growing population. To develop comprehensive technology for the reclamation of these soils, field experiments were conducted to grow rice crop in salt-affected soil using different amendment technologies. The treatments used were T 1 = control, T 2 = 100% gypsum requirement (GR), T 3 = 50% GR with wheat straw at 2 t ha−1, T 4 = 50% GR with rice straw at 2 t ha−1, and T 5 = 50% GR with rice and wheat straw at 2 t ha−1 in the ratio of 50:50. The N, P, and K were applied at 100, 80, and 60 kg ha−1, respectively. Fertilizer sources were urea, triple super phosphate (TSP), and sulfate of potash (SOP) for N, P, and K, respectively. Canal water was used to irrigate the crop based on crop requirement. The results revealed that rice biomass and paddy yield was increased significantly in all the treatments over control. Biomass of 14.60 t ha−1 and paddy yield of 3.50 t ha−1 were achieved in T 2 (100% GR) compared to the values under control treatment, that is, 7.22 and 1.62 t ha−1 for biomass and paddy yield, respectively. The yield in treatment T 5 was close to the highest yield obtained in T 2. Post harvest soil analysis indicated the decrease in ECe, pHs, and SAR values in all the treatments compared to the values in control.
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Ahmad, M.J., Arif, M., Iqbal, A., Khalid, M., Akhtar, N. (2013). Rice Production in Salt-Affected Soils of Pakistan Using Different Reclamation Techniques. In: Shahid, S., Abdelfattah, M., Taha, F. (eds) Developments in Soil Salinity Assessment and Reclamation. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-5684-7_18
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