Upland rice cultivars and lineages performance under no-till and conventional tillage

This study aimed to compare the performance of upland rice cultivars and rice lineages under no tillage (no-till) and conventional planting system, and to verify the existence of differentiated responses to both tillage systems. Thus, an experiment constituted of two essays, no-till and conventional tillage system was conducted in Lavras, MG in 2003/2004 and 2004/2005 growing seasons. Thirteen upland rice cultivars and lineages were tested. A randomized block design and three replicates were used. Grain yield, plant height, flowering and disease incidence were analyzed. Rice cultivars and lineages presented similar yield in grains in both tillage systems. In no-till system there was a reduction tendency in plant height, disease incidance and cycle prolongation, as compared to conventional system. Therefore, no-till system is a viable alternative for upland rice crop.