Özenç Nedim, Özenç Damla Bender
Department of Crop and Animal Production, Vocational School of Technical Sciences, Ordu University, Ordu, 52200, Turkey.
Department of Soil Science and Plant Nutrition, Faculty of Agriculture, Ordu University, Cumhuriyet Campus, Ordu, 52200, Turkey.
J Sci Food Agric. 2015 Jul;95(9):1956-62. doi: 10.1002/jsfa.6911. Epub 2014 Oct 14.
Zinc is an essential element for plants and its deficiency is a widespread problem throughout the world, causing decreased yields and nutritional quality. In this study the effect of zinc fertilization on some nut traits and the nutritional composition of 'Tombul' hazelnut (Corylus avellana L.) variety cultivated in the Black Sea region of Turkey was investigated and the contribution of this nut to human nutrition determined. Trials were carried out at 'Tombul' hazelnut orchards, and zinc fertilizers were applied at 0, 0.2, 0.4, 0.8 and 1.6 kg Zn ha(-1) in three consecutive years.
Significant differences in some nut traits and mineral composition (protein, total oil, ash, kernel percentage, empty and wrinkled nuts, copper, boron, manganese and molybdenum) were observed with zinc fertilizer applications. In terms of daily nutritional element requirements, 100 g of hazelnut provided about 44.74% phosphorus, 13.39% potassium, 19.32% calcium, 37.49% magnesium, 0.19% sodium, 51.63% iron, 25.73% zinc and 14.05% boron of the recommended daily amounts (RDAs), while copper, manganese and molybdenum contents exceeded their RDAs.
In order to improve some nut traits and the mineral composition of hazelnut, 0.8 and 1.6 kg Zn ha(-1) fertilizations could be recommended in practice.
锌是植物必需的元素，缺锌是一个全球性的普遍问题，会导致产量和营养品质下降。本研究调查了在土耳其黑海地区种植的‘通布尔’榛子（欧洲榛，Corylus avellana L.）品种施锌肥对一些坚果性状和营养成分的影响，并确定了这种坚果对人类营养的贡献。试验在‘通布尔’榛果园进行，连续三年分别以0、0.2、0.4、0.8和1.6千克锌/公顷的用量施用锌肥。
施用锌肥后，在一些坚果性状和矿物质成分（蛋白质、总油、灰分、果仁率、空壳和皱壳坚果、铜、硼、锰和钼）方面观察到显著差异。就每日营养元素需求而言，100克榛子提供了推荐每日摄入量（RDA）中约44.74%的磷、13.39%的钾、19.32%的钙、37.49%的镁、0.19%的钠、51.63%的铁、25.73%的锌和14.05%的硼，而铜、锰和钼的含量超过了其RDA。
为了改善榛子的一些坚果性状和矿物质成分，在实际中可推荐施用0.8和1.6千克锌/公顷的肥料。
