Affiliation:
1. Department of Hydraulics, Soil Science and Agricultural Engineering, School of Agriculture, Faculty of Agriculture, Forestry and Natural Environment, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
Abstract
Due to the sensitivity of kiwifruit to soil water and nutrient availability, kiwi production is often associated with over-watering and over-fertilization, especially with nitrogen (N), resulting in increased environmental risks. Crop models are powerful tools for simulating crop production and environmental impact of given management practices. In this study, the CropSyst model was applied to estimate soil N budget and environmental effects of kiwi production, with particular regard to N losses, in two grower-managed kiwi orchards in northern Greece, involving two seasons and different management practices. Management options included N fertilization and irrigation. Model estimates were compared with yield and soil mineral N content (0–90 cm depths) measured three times within the growing season. Agri-environmental indicators were calculated based on the N budget simulation results to assess the environmental consequences (focusing on N losses and water use efficiency) of the different management practices in kiwi production. According to model simulation results, kiwifruit yield and N uptake were similar in both orchards. N losses to the environment, however, were estimated on average to be 10.3% higher in the orchard with the higher inputs of irrigation water and N fertilizer. The orchard with the lower inputs showed better water and N use efficiency. N leaching losses were estimated to be higher than 70% of total available soil N in both study sites, indicating potential impact on groundwater quality. These findings demonstrate the necessity for improved irrigation and N fertilization management in kiwi production in the area.
Funder
LIFE Programme of the European Union
Subject
General Environmental Science,Renewable Energy, Sustainability and the Environment,Ecology, Evolution, Behavior and Systematics
Reference63 articles.
1. (2022, July 15). Faostat. Available online: https://www.fao.org/faostat/en/#home.
2. (2022, August 20). Hellenic Statistical Authority. Available online: https://www.statistics.gr/el/statistics/-/publication/SPG06/-.
3. ‘Tsechelidis’ Kiwifruit;Sotiropoulos;HortScience,2009
4. Stem and whole-plant hydraulics in olive (Olea europaea) and kiwifruit (Actinidia deliciosa);Dichio;Trees,2013
5. Water production functions in kiwi;Holzapfel;Irrig. Sci.,2000
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