Effect of tillage methods and N-management on the establishment of sesame grown after wetland rice [in Bangladesh]
1993
Sarder, N.A. | Rosario, E.L.
Sesame (Sesamum indicum L.) was established in tillage (one rotovation followed by 3 harrowing) and in minimum tillage (seeding was done in 10 cm x 15 cm furrows) soil after wetland rice in Tropaquept, silty clay loam soil in the Philippines. Two nitrogen rates (60 and 90 kg/ha) were placed in three different methods (broadcast, surface band and furrow placement). Seed germination was 17% less in minimum tillage than conventional tillage method, seedling emergence also decreased with higher N rate and closer N placement. Minimum tillage method of crop establishment had higher soil water content throughout the growing period of sesame up to 60 cm soil depth. Normal tillage produced 38% higher seed yield than minimum tillage. Higher rate of N fertilizer (90 kg/ha) failed to increase yield significantly. At 60 kg N/ha, furrow placement showed 50% yield advantage over broadcast method and 32% over surface band. At 90 kg N/ha, furrow placement had 32% yield advantage over broadcast and 27% over surface band method of nitrogen placement.
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