Field experiments were conducted during rabi and summer seasons of 2007-08 and 2008-09 at Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu to study the effect of organic sources of nutrients in organic farming on soil physical properties under rice-blackgram cropping sequence. The experiments were laid out in randomized block design with eight treatments consisting of enriched FYM compost, vermicompost, FYM + neem cake, enriched FYM compost + vermicompost + FYM, composted poultry manure and enriched poultry manure compost, recommended NPK fertilizers and absolute control (without organic and inorganic) which were replicated three times. Based on the equal N basis, required quantities of organic manures were incorporated in the soil. The FYM + neem cake application registered reduced bulk density, higher per cent pore space and improved water holding capacity in post harvest soil of rice and blackgram and which was comparable with enriched poultry manure compost and composted poultry manure. The recommended NPK fertilizer showed higher bulk density and reduced water holding capacity and pore space.