PJB-2020-380
Combined Effect of Biochar-Organic Amendments and Seed Placement Techniques on Sorghum Yield under Salt Stress Conditions
Attaullah khan
Abstract
The changing climate is the biggest threat to world’s fertile lands, making them saline-sodic. Higher evapotranspiration rates due to increasing temperatures and decreasing precipitation are aggravating salinity problems, thereby adversely affecting the crop growth and development especially in the arid regions. Mitigating adverse effects of saline-sodic soils necessary for ensuring global food security under changing climate is still not well understood. The present study is a step forward to analyze the effect of different cultural practices and organic ammendments on Sorghum bicolor and Sorghum vulgare under salt stress condition. In this regard, a factorial experiment was conducted with three sowing techniques and four treatments of organic amendments in saline-sodic soil. Results showed s significant decrease in SAR and ECe of the soil under combind application of FYM+BC in RD-sown plots, resulting in significantly higher grain and biological yield as compared to control (T1) plots. Significantly higher grain yield (320 kg ha-1) was obtained under combined application of FYM+BC in RD sown plots, whilst lowest yield (235 kg ha-1) was found in FB (conventional sowing technique) sown plots (T1). The application of FYM alone or in combination with BC under RD sown plots reduced the adverse effect of salinity, thereby increased crop yield. Therefore, the present study infers that RD sown technique with FYM alone and/or in combination with BC may be a useful technique to increase crop yield by improving soil properties under saline-sodic conditions.
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