Abstract

In a field experiment conducted in a heavy black soll of periyar-Vaigai Command Area of Maduri District, with different soil amendments, the in-situ bulk density. infiltration rate, hydraulic conductivity, moisture content in soil (on any day after irrigation) and maximum water holding capacity were all significantly influenced. The plots treated with 20 tonnes of coir waste ha recorded the highest moisture content at any time after Irrigation, maximum water holding capacity, infiltration rate and hydraulic conductivity of soil and lowest in-situ bulk density compared to others. The highest yield of groun- dnut (TMV-7) pods and haulms (with the highest additional profit) was given by coir waster treatment compared to others with pressmud (@ 10 tonnes/ha), farm yard manure (@20 tonnes/ha) and Sand (@ 50 tonnes/ha).

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