Abstract Responses of three tomato (Lycopersicon esculentum Mill.) hybrids viz. 'Luanova', 'Savarona' and 'Tessera' to various doses (0, 0.5, 1.0, 1.5 2.0 g L-1) soil application humic acid (HA) were evaluated in terms plant growth, productivity quality fruits, under greenhouse conditions, during 2011-12 2012-13. In addition improved characteristics, higher values for yield components recorded ...