Fertigation management of olive grove is highly complex, especially when reclaimed water is used for irrigation. Nitrogen (N) is the main nutrient component of olive trees which, traditionally, has led to an excessive use in fertilization programs. This problem can be exacerbated if reclaimed water is used since it already contains N. For this reason, water quality must be considered in the fertilization plan. Both total content and N form arriving to the trees have implications in olive tree nutrient requirements as well as the environment. If reclaimed water particularities and the length of the pipes of water distribution networks are considered, the form and total concentration of N can change over space and time. In this work, both spatial and temporal analysis of the N content and form in a water distribution network using reclaimed water for irrigating olive trees was performed. This study proved that changes in N were evident both over time and across the irrigation water distribution network. Seasonally, N content was reduced during the summer period. Spatially, a clear nitrification occurred from the pumping station to the farms. These variations demonstrate the importance of a continuous water quality control in order to adjust the fertilization plan according to the N content in water.

橄榄树的施肥管理非常复杂，特别是当再生水用于灌溉时。氮 (N) 是橄榄树的主要营养成分，传统上，它导致施肥计划过度使用。如果使用再生水，这个问题会更加严重，因为它已经含有 N。因此，在施肥计划中必须考虑水质。到达树木的总含量和氮形式对橄榄树的营养需求和环境都有影响。如果考虑再生水的特殊性和配水管网的长度，N 的形式和总浓度可以随空间和时间而变化。在这项工作中，对使用再生水灌溉橄榄树的配水网络中的 N 含量和形态进行了时空分析。这项研究证明，随着时间的推移和整个灌溉配水网络，N 的变化都很明显。季节性地，夏季期间氮含量减少。在空间上，从泵站到农场发生了明显的硝化作用。这些变化表明了连续水质控制的重要性，以便根据水中的氮含量调整施肥计划。从泵站到农场发生了明显的硝化作用。这些变化表明了连续水质控制的重要性，以便根据水中的氮含量调整施肥计划。从泵站到农场发生了明显的硝化作用。这些变化表明了连续水质控制的重要性，以便根据水中的氮含量调整施肥计划。