Abstract
Shoot dry matter data from a multi-year experiment with four tillage treatments (conventional (MB), chisel (CH), ridge till (R) and no-till (NT)) conducted on two sites at Ottawa, Canada (45°23'N, 75°43'W) were analyzed to determine to what extent tillage differences influenced shoot growth over the vegetative period. Over three years the ranking of corn shoot dry matter at 6-leaf, 12-leaf and silking stages was MB > CH > R > NT. Tillage effects were only statistically significant (P ≦ 0.05) at early vegetative stages. Phenological data indicated a greater delay in silking than in reaching the 6-leaf stage under conservation tillage. Thermal units (growing degree days, base temperature 10°C) in the seed bed (0.05 m) were also ranked MB > CH > R > NT for development between planting and the 6-leaf stage. By the 12-leaf and silking stages, tillage treatment had little effect on soil temperature. Soil temperatures at the 0.20 m depth were unaffected by tillage treatment. Shoot growth gradually became a funct...
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
