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Title
Responses of Canopy Growth and Yield of Potato Cultivars to Weather Dynamics in a Complex Topography: Belg Farming Seasons in the Gamo Highlands, Ethiopia |
Full text
http://library.wur.nl/WebQuery/wurpubs/549660 |
Date
2019 |
Author(s)
Minda, Thomas T.; Molen, Michiel K., Van Der; Vilà-Guerau de Arellano, Jordi; Chulda, Kanko C.; Struik, Paul C. |
Abstract
Potato is an increasingly important crop in Ethiopia. The Gamo Highlands are one of the large potential potato producing regions in Ethiopia. The growing conditions are different from those in the temperate regions, where most of the agronomical expertise on potato has been developed. The influence of environmental conditions on the crop in the Gamo Highlands is poorly understood. We conducted field trials with eight potato cultivars in six locations and during two seasons. The canopy cover (CC) and plant height (PH) were measured with high temporal resolution and tuber yields were assessed as well. The experiments were conducted near our newly installed weather stations at different elevations. CC and PH were strongly correlated with temperature sum (Tsum). Tuber yields differed among elevations and cultivars. Nevertheless, these differences were poorly explained by environmental variables. We also found that no single cultivar performed best at all elevations. The number of branches was a predictor of yield, suggesting that radiation interception was limiting tuber growth. Tuber yield was optimal when the number of days to crop maturity was around 100'110 days. We conclude that Tsum is a predictor of crop growth, but environmental variables poorly explain yield variations, which calls for further investigation |
Subject(s)
Meteorologie en Luchtkwaliteit; Meteorology and Air Quality; Meteorologie en Luchtkwaliteit; Meteorology and Air Quality; WIMEK; WIMEK; Crop Physiology; Crop Physiology; Crop Physiology; Crop Physiology; PE&RC; PE&RC |
Language
en |
Relation
http://edepot.wur.nl/474292 |
Type of publication
Article/Letter to editor |
Format
application/pdf |
Source
Agronomy 9 (2019) 4; ISSN: 2073-4395 |
Rights
Wageningen University & Research |
Repository
Wageningen - University of Wageningen
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Added to C-A: 2019-04-04;08:16:28 |
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