The traditional agricultural production systems are evolving more toward organic, sustainable or environmental friendly systems and products; however, it is important to keep the yield and the quality of crops. The aim of this work was to evaluate the recovery of iron deficient strawberry plants by foliar spray, using a gramineous plants extract (GE). Bare-root transplants of strawberry (Fragaria × ananassa Duch. cv “Diamond”) were grown in a Hoagland’s nutrient solution with iron (Fe10) or without (Fe0). Forty-two days after Fe deprivation, plants grown without iron became chlorotic and GE was applied. Three foliar applications were done, once per week and the regreening was monitored using a SPAD apparatus. After two applications, a rapid but transient regreening was detected in young leaves. Nevertheless, biomass and root/shoot ratio of recovered plants (GE treatment) were similar to chlorotic plants (Fe0 treatment). Phosphorous, Mn and Fe contents were higher in crowns of GE plants at the end of the experiment (67 days). The concentration of organic acids and ferric chelate–reductase (FC-R) activity was also significantly higher in GE treatment. It is possible that the high chelating capacity of the extract was responsible for the Fe internal transport and use.

传统的农业生产系统正在向有机，可持续或环境友好的系统和产品发展。但是，保持作物的产量和质量很重要。这项工作的目的是评估使用禾本科植物提取物（GE）通过叶面喷雾回收的缺铁草莓植物。草莓的裸根移植（草莓×香蕉）杜赫 cv“钻石”）在Hoagland的含铁（Fe10）或不含铁（Fe0）的营养液中生长。剥夺Fe后42天，无铁生长的植物发生了褪绿，并施用了GE。每周进行三次叶面施用，并使用SPAD装置监测重新绿化。两次施用后，在嫩叶中检测到快速但短暂的重新绿化。然而，回收植物（GE处理）的生物量和根/茎比与绿藻类植物（Fe0处理）相似。在实验结束时（67天），GE植物冠部的磷，Mn和Fe含量较高。在GE治疗中，有机酸的浓度和螯合铁还原酶（FC-R）的活性也显着升高。