Effect of Soil Amendments on Reclamation of Saline-Sodic Soil

Abstract

A pot experiment was conducted on saline-sodic soil to compare and assess the reclamation ability of different amendments and amendment combinations based on soil quality parameters. Treatments prepared were; T1-control (soil only), T2-soil + 1% cow dung (CD), T3-soil + 1% partially burnt paddy husk (PH), T4-soil + gypsum (GYP)(100% Gypsum Requirement (GR), T5-soil + 1% CD + GYP (100% GR), T6-soil + 1% PH + GYP (100% GR). Organic amendments were applied at 1% of soil weight, and gypsum was applied at 100% gypsum requirement as surface application and incubated at room temperature (31±1 o C) for 90 days. After incubation, 42 days leaching was provided at a rate of 3 l/pot and the application was completed through 6 irrigation cycles/treatment with 7 days interval. After incubation and leaching of soils, onion variety Wallara-60 was grown in these pots. Results obtained both after the incubation and leaching show significant differences in bulk density, electrical conductivity (EC), pH, exchangeable Ca 2+ and Sodium Adsorption Ratio (SAR) among the treatments in comparison with the control. Among the treatments, the highest reduction in SAR (14.62 mmol/l) 1/2 and EC (1.71 dS/m) were recorded by the GYP+PH (T6). A significant difference was observed in the tiller number among the treatments. Treatments GYP (T4), CD+GYP (T5) and PH+GYP (T6) showed a significantly higher yield than that of control, while T5 and T6 showing the highest yield. Therefore, incorporation of partially burnt paddy husk and cow dung increased the effectiveness of gypsum in reclaiming saline-sodic soils. Further, the onion yield parameters supported the findings.

Mitigation of Salinity-Induced Oxidative Damage, Growth, and Yield Reduction in Fine Rice by Sugarcane Press Mud Application

“…However, PM appreciably reduced the Na + accumulation in rice plants by increasing the K + accumulation. Press mud application ensures the desirable Ca 2+ availability in soil by mobilizing CaCO 3 , improving soil structural stability, and increasing leaching of Na + ( Prapagar et al, 2012 ), thereby reducing the salinity-induced oxidative damages ( Sheoran et al, 2021b ). Additionally, PM being an excellent nutrient source ensures a better supply of K + in salt-affected soils, and Na + uptake minimizes the salt-induced toxic effects ( Kumar S. et al, 2017 ).…”

Effect of Phosphogypsum on Soil Physical Properties in Moroccan Salt-Affected Soils

“…This country is among the major PG producers in the world. However, it is essential to promote the use of PG as an amendment for the farmers by testing and evaluating the effect of PG in different soil classes and different saline-sodic soils [43]. Although several pieces of research were devoted to the agricultural uses of PG [44], few studies are interested in the evaluation of the use of PG as an amendment for reclaiming saline-sodic soils in Morocco [25].…”

Response of Maize to FYM, Gypsum and Pore Volume of Leaching Water in Saline Sodic Soil of Bisidimo, Babile District, Eastern Lowlands of Ethiopia

“…The experiment was conducted from Oct.23 to Dec. 23,2012. Harvesting time of maize is different for grain production and biomass determination.…”