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20 results on '"Tenuta, Mario"'

1. Response to side-banded phosphorus and zinc fertilizer for corn grown after canola or soybean in southern Manitoba.

Author

Rogalsky, Magdalena, Tiessen, Kevin H.D., Flaten, Don, Lawley, Yvonne, Tenuta, Mario, and Heard, John

Subjects
CANOLA, ZINC fertilizers, CORN farming, SOYBEAN, RAPESEED, CORN growth, CROP rotation
Abstract

A 2-year crop rotation study in southern Manitoba assessed the effects of starter fertilizer on grain corn (Zea mays L.) production when corn followed canola (Brassica napus L.) versus soybean (Glycine max L. Merr.). Treatments included a control (no starter) and two rates of phosphorus (P) (30 and 60 kg P2O5 ha−1) as monoammonium phosphate (MAP, 11–52–0) or MicroEssentials® SZ (MESZn, 12–40–0–10–1) side-banded at planting. The preceding crop did not have any influence on mycorrhizal colonization of corn roots at the V4 corn growth stage. However, side-banded fertilizer increased early-season biomass by as much as 111% compared to the unfertilized control, averaged across all site-years, with the largest increases occurring where corn followed canola. P concentration and uptake in early-season biomass increased as the P rate increased. Zinc (Zn) concentrations in early-season biomass were the greatest for the unfertilized control and MESZn treatments, while Zn uptake was significantly greater with the application of starter fertilizer compared to the unfertilized control. Starter P advanced silking date by 2–7 days relative to the unfertilized control. At maturity, starter P reduced grain moisture by 21–27 g kg−1 in corn only after canola. The high rate of MAP increased grain yield by an average of 770 kg ha−1 compared to the unfertilized control, regardless of the preceding crop. The negative influence of the preceding canola crop on early-season growth and mid-season development of corn can be managed with starter fertilization to provide adequate P and Zn to the corn crop and maintain successful production in Manitoba. [ABSTRACT FROM AUTHOR]

Published
2024
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3. Ratio of non-growing season to growing season N2O emissions in Canadian croplands: an update to national inventory methodology

Author

Pelster, David E., primary, Thiagarajan, Arumugam, additional, Liang, B. Chang, additional, Chantigny, Martin H., additional, Wagner-Riddle, C., additional, Congreves, Kate A., additional, Lemke, R. L., additional, Glenn, Aaron, additional, Tenuta, Mario, additional, Hernandez-Ramirez, Guillermo, additional, Bittman, Shabtai, additional, Hunt, D. E., additional, Owens, Jennifer, additional, and MacDonald, J. Douglas, additional

Published
2022
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4. Ratio of non-growing season to growing season N2O emissions in Canadian croplands: an update to national inventory methodology.

Author

Pelster, David E., Thiagarajan, Arumugam, Liang, Chang, Chantigny, Martin H., Wagner-Riddle, Claudia, Congreves, Kate, Lemke, Reynald, Glenn, Aaron, Tenuta, Mario, Hernandez-Ramirez, Guillermo, Bittman, Shabtai, Hunt, Derek, Owens, Jennifer, and MacDonald, Douglas

Subjects
GROWING season, FARMS, CORRECTION factors, COLD regions, AGRICULTURE
Abstract

National inventory reporting of agricultural nitrous oxide (N2O) emissions in Canada is based primarily on measurements obtained using static chambers. In regions with cold winters and an accumulated snowpack (including Canada), these measurements tend to focus on the growing season (typically May–October). However, research has shown that emissions continue throughout the non-growing season (NGS) and that these account for a significant proportion of annual emissions. In the Canadian National Inventory NGS emissions currently are assumed to be adequately captured in western Canada, while they are accounted for in eastern Canada by multiplying the growing season emissions by a correction factor of 1.4, a value that was derived based on a limited number of measurements. Here we use recent Canadian studies to validate this correction factor. We collected data from available Canadian studies that measured soil N2O emissions from agricultural systems for the entire year and determined the proportion of these emissions that occurred during the NGS. The proportion of annual N2O emissions that occurred during the NGS varied widely, ranging from −4% to 119% with a mean of 35.5%, compared to the previous estimate of 30%. Due to high variability, few differences were observed between means associated with climatic, soil, and management variables. To correct for NGS N2O emissions from Canadian agricultural soils, we suggest that the current correction factor for converting growing season to total annual emissions be changed from 1.4 to 1.55 and that this be used for all agricultural soils in Canada rather than just eastern Canada. [ABSTRACT FROM AUTHOR]

Published
2023
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18. Greenhouse gas emissions from pig slurry applied to forage legumes on a loamy sand soil in south central Manitoba.

Author

Xiaopeng Gao, Tenuta, Mario, Buckley, Katherine E., Zvomuya, Francis, and Ominski, Kim

Subjects
SWINE manure, FORAGE plants, EMISSIONS (Air pollution), SOIL moisture, GREENHOUSE gases, LOAM soils, SOILS
Abstract

Copyright of Canadian Journal of Soil Science is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2014
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19. Net CO2 and N2O exchange during perennial forage establishment in an annual crop rotation in the Red River Valley, Manitoba.

Author

Maas, Siobhan E., Glenn, Aaron J., Tenuta, Mario, and Amiro, Brian D.

Subjects
PERENNIALS, FORAGE plants, CROP rotation, SOIL composition, CARBON dioxide, NITROGEN in soils
Abstract

Copyright of Canadian Journal of Soil Science is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2013
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