(L.) Scop. ex F. W. Schmidt (Asteraceae) is rich in secondary compounds, with antimicrobial and antioxidant activity, medicinal and health-promoting properties, however, like many other wild edible plants of the Mediterranean, it is still underutilised. This study focused on the pilot cultivation of under minimal irrigation and organic, integrated nutrient management (ΙΝΜ) fertilisation (by foliar application) in Crete, Greece, analysing its response in terms of yield characteristics and nutritional content. The foliar fertilisation treatments consisted of a control treatment (CO), a conventional water-soluble fertiliser (CV), a semi-organic nitrogen fertiliser (TR), a liquid semi-organic fertiliser (TF), and v) a mix of the conventional and semi-organic fertiliser (CF). Physiological characteristics (i.e., SPAD and Fv/Fm) were assessed during cultivation, while yield and leaf nutrient parameters were determined, at harvest. Treatments containing bioactive compounds (TF and CF) almost doubled the fresh and dry weight of shoot compared to the control (CO) treatment (172% and 160%, respectively) which can be partially ascribed to the elevated physiological characteristics of the TF and CF fertilisation treatments. Even more, nitrogen rich treatments (CV and TR) improved yield characteristics compared to the control, but the effect was not as pronounced as that achieved by TF and CF semi-organic fertilization treatments. Our results indicate that the application of foliar semi-organic fertilization seems to be an effective alternative practice to increase photosynthetic capacity and concomitantly fresh and dry yield of without compromising the nutritional profile of the edible product.

中文翻译：

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叶面施肥对尾草（传统克里特岛-地中海饮食的本土植物）的影响

(L.) 斯科普。 ex FW Schmidt（菊科）富含次级化合物，具有抗菌和抗氧化活性、药用和促进健康的特性，然而，与地中海的许多其他野生食用植物一样，它仍然没有得到充分利用。本研究的重点是在希腊克里特岛进行微量灌溉和有机综合养分管理 (INM) 施肥（通过叶面施用）的试点种植，分析其在产量特征和营养成分方面的反应。叶面施肥处理包括对照处理（CO）、常规水溶性肥料（CV）、半有机氮肥（TR）、液体半有机肥（TF）和v）常规肥料和半有机肥料（CF）。在栽培期间评估生理特征（即SPAD和Fv/Fm），同时在收获时测定产量和叶片营养参数。与对照 (CO) 处理相比（分别为 172% 和 160%），含有生物活性化合物（TF 和 CF）的处理几乎使芽的鲜重和干重增加了一倍，这可部分归因于 TF 和 CF 生理特性的提高施肥处理。更重要的是，与对照相比，富氮处理（CV和TR）提高了产量特性，但效果不如TF和CF半有机肥处理那么明显。我们的结果表明，叶面半有机肥的应用似乎是一种有效的替代做法，可以提高光合能力并同时提高新鲜和干燥产量，同时又不影响可食用产品的营养成分。