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Canadian Journal of Plant Science
Moulin, A.P., Agriculture and Agri-Food Canada, Brandon Research Centre, Brandon, MB R7Y 5Y3, Canada
Cohen, Y., Agricultural Research Organization, Volcani Center, Institute of Agricultural, Engineering, Bet-Dagan, Israel
Alchanatis, V., Agricultural Research Organization, Volcani Center, Institute of Agricultural, Engineering, Bet-Dagan, Israel
Tremblay, N., Agriculture and Agri-Food Canada, Horticultural Research and Development Centre, Saint-Jean-sur-Richelieu, QC J3B 3E6, Canada
Volkmar, K., Agriculture and Agri-Food Canada, Southern Crop Protection and Food Research Centre, London, ON N5V 4T3, Canada
Recent increases in the cost of fertilizer N have prompted producers to assess the potential to vary inputs within fields and during the growing season to produce the highest marketable yield of potatoes (Solanum tuberosum L.). A study was conducted from 2005 to 2007 near Brandon, Manitoba, Canada, to assess the spatial variability of potato yield in upper, middle and lower landform elements on a sandy loam soil in response to a range of N fertilizer rates applied in the spring or in combination with an application during the growing season. There was no clear trend with respect to the effect of landform on potato yield. Nitrogen fertilizer increased total and marketable yield relative to the control at rates from 75 to 225 kg ha-1 in split applications or applied at seeding. No significant interaction between landform and fertilizer treatment was observed. Petiole N concentration, determined late in the growing season, was correlated with potato yield though the correlation varied considerably between years. Petiole leaflet N concentration was affected by fertilizer on most sampling dates, but decreased with time during the growing season. We conclude that although N fertilizer could be applied during the growing season based on petiole leaflet N concentration deficiencies in mid-July, there is no clear difference in potato yield due to split application relative to spring applications of N fertilizer at rates of 75 kg ha-1 or greater based on landform elements for potato production, likely due to the short growing season in western Canada.
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הספר "אוצר וולקני"
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תנאי שימוש
Yield response of potatoes to variable nitrogen management by landform element and in relation to petiole nitrogen - A case study
92
Moulin, A.P., Agriculture and Agri-Food Canada, Brandon Research Centre, Brandon, MB R7Y 5Y3, Canada
Cohen, Y., Agricultural Research Organization, Volcani Center, Institute of Agricultural, Engineering, Bet-Dagan, Israel
Alchanatis, V., Agricultural Research Organization, Volcani Center, Institute of Agricultural, Engineering, Bet-Dagan, Israel
Tremblay, N., Agriculture and Agri-Food Canada, Horticultural Research and Development Centre, Saint-Jean-sur-Richelieu, QC J3B 3E6, Canada
Volkmar, K., Agriculture and Agri-Food Canada, Southern Crop Protection and Food Research Centre, London, ON N5V 4T3, Canada
Yield response of potatoes to variable nitrogen management by landform element and in relation to petiole nitrogen - A case study
Recent increases in the cost of fertilizer N have prompted producers to assess the potential to vary inputs within fields and during the growing season to produce the highest marketable yield of potatoes (Solanum tuberosum L.). A study was conducted from 2005 to 2007 near Brandon, Manitoba, Canada, to assess the spatial variability of potato yield in upper, middle and lower landform elements on a sandy loam soil in response to a range of N fertilizer rates applied in the spring or in combination with an application during the growing season. There was no clear trend with respect to the effect of landform on potato yield. Nitrogen fertilizer increased total and marketable yield relative to the control at rates from 75 to 225 kg ha-1 in split applications or applied at seeding. No significant interaction between landform and fertilizer treatment was observed. Petiole N concentration, determined late in the growing season, was correlated with potato yield though the correlation varied considerably between years. Petiole leaflet N concentration was affected by fertilizer on most sampling dates, but decreased with time during the growing season. We conclude that although N fertilizer could be applied during the growing season based on petiole leaflet N concentration deficiencies in mid-July, there is no clear difference in potato yield due to split application relative to spring applications of N fertilizer at rates of 75 kg ha-1 or greater based on landform elements for potato production, likely due to the short growing season in western Canada.
Scientific Publication
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