Abstract

Occurence of hard pans at different depths of the cultivated soils is one of the serious soil physical problems encountered which are known to affect the crop growth and yield due to the restricted movement of air, water and nutrients and root penetration. Any attempt to break this barrier is bound to have notable benefits. The aim of this study was to investigate the effect of chiseling and the addition of organic amendments on the yield of sorghum grown in a soil having impervious layer at shallow depth. The " results of the experiment revealed that both chiseling at closer intervals and the addition of amendments like groundnut husk and rice husk had increased the yield of sorghum grain and starw over control. The physical properties of the soil viz,, bu k density, stabi- lity index and hydraulic conductivity examined at the post harvest stage were also found" to be improved considerably due to chiseling and addition of organic amendments.

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