Authors
CSS Ferreira, JJ Keizer, LMB Santos, D Serpa, V Silva, M Cerqueira, AJD Ferreira, N Abrantes
Publication date
2018/3/15
Journal
Agriculture, Ecosystems & Environment
Volume
256
Pages
184-193
Publisher
Elsevier
Description
Conventional management of Mediterranean vineyards strongly contributes to land degradation. In Portugal, the use of integrated production has been encouraged by governmental subsidies because it is assumed to be a farm management system that protects the environment and favours agriculture sustainability. The purpose of this study is to assess the impact of minimum tillage and regulated fertilization practices, driven by integrated production, on runoff and associated sediment and nutrient exports (total phosphorous – TP, total nitrogen – TN and nitrates – NO3). A vineyard in the Bairrada wine region was instrumented with six runoff plots (80–122 m2). Plots were monitored on a weekly to bi-weekly basis (depending on the rainfall pattern), over two hydrological years (from October 2012 to September 2014). Results indicated that annual runoff coefficients ranged from 10% to 20%, sediment losses from 1.1 …
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