A field experiment was conducted on a clay loam soil at Kazirshimla site under Trishal thana in Mymensingh district of Bangladesh to study the performance of different tillage implements and their influence on soil fertility and paddy yield(IR50). Four types of tillage implements viz. power tiller, improved plough-I, improved plough-II and country plough were used for the study. The depth of ploughing with improved plough-I (BARI plough) was significantly different compared to those of theother implements used. The physicochemical properties of the experimental soil showed that during land preparation the soil P{sup}H was in the medium range whereas at harvest it was in the low range; sulphur was in the low range both during landpreparation and at harvest; electrical conductivity, organic carbon and total nitrogen increased at harvest, and phosphorous was the same both during land preparation and at harvest. Highest grain yield (4375 kg/ha) was obtained using improved plough-Ibecause of higher number of panicles/hill (7.32), number of grains/panicle (46.85) and 1000 grain weight (33.66 g). Thus, the use of improved plough-I may ensure better utilization of available draft power with good tilling performance and may save timeto a large extent.
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