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Fe enriched biosolids as fertilizers for orange and peach trees grown in field conditions

机译：铁富集的生物固体可用作田间条件下种植的橙树和桃树的肥料

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Iron enriched biosolids (FEB) from water treatment facilities are being used as an alternative to synthetic chelates in order to improve Fe uptake. The impact of this type of products on iron nutrition is not fully understood. Plant response depends on FEB composition, soil and climatic conditions and crop response. In order to study the effectiveness of FEB as fertilisers, two field experiments have been carried out. Two different commercial formulations of FEB (unmodified u-FEB and modified m-FEB) produced as a by-product of a drinking water treatment facility in Tampa (Florida, USA) were used. An orange tree (Citrus sinensis, cv. Navelina) and a peach tree (Prunus persica cv. Sudanell) field experiments took place in different locations in Spain. Macro and micronutrients were evaluated to assess mineral status of orange and peach leaf samples. Yield and fruit size were also determined. Despite the large amount of Fe bound by the organic matter on FEB, these products were less effective than synthetic chelates to improve iron uptake. No differences were found in orange yield or size. Results show that the ferric treatments improve fruit calibre, but not yield in peaches.
机译：来自水处理设施的富铁生物固体（FEB）被用作合成螯合物的替代品，以提高对铁的吸收。这类产品对铁营养的影响尚不完全清楚。植物的反应取决于FEB的组成，土壤和气候条件以及作物的反应。为了研究FEB作为肥料的有效性，已经进行了两个田间试验。使用了两种不同的商业配方FEB（未经修饰的u-FEB和经修饰的m-FEB）作为坦帕（美国佛罗里达州）饮用水处理厂的副产品生产。在西班牙的不同地点进行了橙树（Citrus sinensis，cV。Navelina）和桃树（Prunus persica cv。Sudanell）的田间试验。评价大量和微量营养素以评估橙和桃叶样品的矿物质状态。还确定了产量和果实大小。尽管FeB上的有机物结合了大量的Fe，但这些产品在改善铁吸收方面不如合成螯合物有效。橙色产量或大小没有发现差异。结果表明，铁处理提高了桃子的口径，但没有提高产量。

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