In situ trenching, mulching and subsoil biomassing in inter rows of existing mulberry garden was conducted at G.K.V.K,Bangalore during 2007-2010 in red sandy clay loam soil with normal pH (6.8) and EC to study the yield and growth parameters as influenced by this technology compared with normal practice. The varieties and the management were evaluated separately using split plot design. Among theseven varieties significantly higher leaf yield was recorded in S13 (26.08 T) followed by MR2(25.00 T, DD1 (21.63 T) S34(19.52 T), RFS-175(19.01 T) and M5 (17.90 T) respectively. The minimum leaf yield was recorded in S30 (16.67 T).There was an yield increase of 45.49 percent in S13 compared to M5 (control).Among the managements significantly higher leaf yield (23.39 T) was recorded in improved practice (trenching, mulching and subsoil biomassing) followed by lower leaf yield (18.27 T) in normal practice. There was 28.02 percent yield increase per hectare /year in improved practice over normal practice. The higher Yield in improved management is due to increased growth parameters viz., 32.33 percent increase in shoot no, 14.11 percent increase in total shoot length, 25.49 percent increase in longest shoot length,19.58 percent increase in number of leaves, 25.81 percent increase in leaf area, 25.19 percent increase in number of nodes and 25.81percent increase in leaf area over normal practice. Hence the improved practice and high yielding varieties like S13 and MR2 can be recommended for increasing the mulberry yield under rainfed condition.