How to translate text using browser tools
23 September 2017 Tillage and crop rotation effects on the yield of corn, soybean, and wheat in eastern Canada
M.J. Morrison, E.R. Cober, E.G. Gregorich, H.D. Voldeng, B. Ma, G.C. Topp
Author Affiliations +
Abstract

Farmers in Canada are adopting no-till (NT) production at a high frequency. Conventional tillage (CT) was compared to no till (NT) with corn (Zea mays L.), soybean [Glycine max (L.) Merr.], and wheat (Triticum aestivum L.) grown in monoculture or annual rotation in a long-term study established in Ottawa (1990). From 1996 to 2000, all plots reverted to NT conditions to study the transition effects from CT to NT. In transition from CT to NT, new-NT corn plots yielded significantly more than established-NT plots in the first year of transition only, while there were no transition effects for soybean or wheat. In 2001, the experiment was changed back to CT and NT. Over 15 yr of the tillage–rotation trial (2001–2015), CT corn yields were ∼20% higher than NT corn across all three rotations, but the differences were not significant at the 5% level (p values 0.11–0.15). Fertilizer was not incorporated in all NT corn and wheat crops and may have limited NT yields. Yields did not differ between CT and NT for either soybean or wheat in any of the rotations. Wheat and CT corn yielded 22% and 8% more, respectively, when grown in rotation than in monoculture. Soybean yield did not differ between rotation and monoculture. Crop order in the rotation (corn–soybean–wheat vs. corn–wheat–soybean) did not result in significant yield differences. An economic, agronomic, or environmental advantage will be needed to justify NT corn production in high-yielding environments of a humid continental agroecosystem.

© Her Majesty the Queen in right of Canada 2018. Permission for reuse (free in most cases) can be obtained from RightsLink.
M.J. Morrison, E.R. Cober, E.G. Gregorich, H.D. Voldeng, B. Ma, and G.C. Topp "Tillage and crop rotation effects on the yield of corn, soybean, and wheat in eastern Canada," Canadian Journal of Plant Science 98(1), 183-191, (23 September 2017). https://doi.org/10.1139/cjps-2016-0407
Received: 16 December 2016; Accepted: 1 August 2017; Published: 23 September 2017
JOURNAL ARTICLE
9 PAGES

This article is only available to subscribers.
It is not available for individual sale.
+ SAVE TO MY LIBRARY

RIGHTS & PERMISSIONS
Get copyright permission
Back to Top