Trends in the variability of potato tuber yield under selected land and soil characteristics

Mahnaz Zare, Aitazaz A. Farooque, Farhat Abbas, Qamar Zaman and Melanie Bos
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Mahnaz Zare: Facultyof Sustainable Design Engineering, University of Prince Edward Island, Charlottetown, Canada
Aitazaz A. Farooque: Facultyof Sustainable Design Engineering, University of Prince Edward Island, Charlottetown, Canada
Farhat Abbas: Department of Environmental Sciences and Engineering, Government College University Faisalabad, Punjab, Pakistan
Qamar Zaman: Department of Engineering, Agricultural Campus, Dalhousie University, Truro, Canada
Melanie Bos: Facultyof Sustainable Design Engineering, University of Prince Edward Island, Charlottetown, Canada

Plant, Soil and Environment, 2019, vol. 65, issue 3, 111-117

Abstract: The objective of this study was to evaluate variations in potato tuber yield with the selected land and soil characteristics including (i) topography (elevation and slope); (ii) geometry (horizontal coplanar geometry (HCP)and perpendicular coplanar geometry (PRP)); (iii) hydrology (volumetric moisture content; θv), and (iv) chemistry (phosphate, potash, organic carbon; organic carbon and pH). Analyses of the data collected across four potato fields, two each in Prince Edward Island and New Brunswick (NB), showed that the tuber yield negatively correlated with the field slope and positively correlated with most of the soil characteristics studied. Field elevation affected yield only under certain conditions such as higher range of elevation (≥ 7 m) (Field 2 in NB). Among soil characteristics, only HCP and PRP correlated with field elevation. The slope and elevation explained 22% to 36% variability of yield. Investigations of yield and topography by zonal analysis showed that yield was lower in zones of higher slope or elevation and lower θv, as the mean θv decreased in zones with a higher slope.

Keywords: Atlantic Canada; Solanum tuberosum L.; land surface; site-specific crop management; precision agriculture (search for similar items in EconPapers)
Date: 2019
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:65:y:2019:i:3:id:776-2018-pse

DOI: 10.17221/776/2018-PSE

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