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Silicon Contribution Via Nutrient Solution in Forage Plants to Mitigate Nitrogen, Potassium, Calcium, Magnesium, and Sulfur Deficiency
Journal of Soil Science and Plant Nutrition ( IF 3.4 ) Pub Date : 2020-07-27 , DOI: 10.1007/s42729-020-00245-7
Antonio Carlos Buchelt , Gelza Carliane Marques Teixeira , Kamilla Silva Oliveira , Antônio Márcio Souza Rocha , Renato de Mello Prado , Gustavo Caione

This study aimed to evaluate whether silicon application in the nutrient solution is efficient in relieving stress caused by nutrient deficiency (N, K, Ca, Mg, and S) in the forages BRS Zuri ( Panicum maximum ) and BRS RB331 Ipyporã ( Brachiaria ruziziensis × Brachiaria brizantha ). Two experiments were carried out in a greenhouse with both forages, with plants grown in a nutrient solution in pots filled with washed sand. Treatments were arranged in a completely randomized block design, with five replications and consisted of complete solution (control) and individual omission of nitrogen, potassium, calcium, magnesium, and sulfur in the absence (−Si) and presence of silicon (+Si) at a concentration of 2 mmol L −1 applied via nutrient solution as stabilized potassium sodium silicate. The dry mass of the shoot, root, and clump residual material, accumulation and use efficiency of nutrients, and the description of symptoms of nutritional deficiency were evaluated. Silicon addition in the nutrient solution favored shoot dry matter production and root dry matter production of both forages, in treatments with K, Ca, and Mg omission; the same effect was not observed for N and S. We conclude that the application of silicon attenuates the effects of potassium, calcium, and magnesium deficiency in forages BRS Zuri and BRS RB331 Ipyporã, as it increases the accumulated shoot dry mass, due to the greater efficiency in the use of these nutrients. The beneficial effect of silicon was not important in forage plants with nitrogen and sulfur deficiency.

中文翻译:

通过饲料植物中的营养液贡献硅以减轻氮、钾、钙、镁和硫的缺乏

本研究旨在评估在营养液中施用硅是否能有效缓解 BRS Zuri ( Panicum max ) 和 BRS RB331 Ipyporã ( Brachiaria ruziziensis × Brachiaria brizantha )。两个实验在温室中用两种草料进行,植物在营养液中生长,罐子里装满了洗过的沙子。处理以完全随机的区组设计排列,有五次重复,包括完全溶液(对照)和在不存在(-Si)和存在硅(+Si)的情况下单独省略氮、钾、钙、镁和硫以2 mmol L -1 的浓度通过营养液作为稳定的硅酸钠钾施用。芽、根和团块残留物质的干质量,评价营养素的积累和利用效率,以及对营养缺乏症状的描述。在营养液中添加硅有利于两种牧草的芽干物质产生和根干物质产生,在忽略 K、Ca 和 Mg 的处理中;N 和 S 没有观察到相同的效果。我们得出结论,硅的应用减弱了牧草 BRS Zuri 和 BRS RB331 Ipyporã 中钾、钙和镁缺乏的影响,因为它增加了累积的茎干质量,这是由于更有效地利用这些营养素。在氮和硫缺乏的牧草植物中,硅的有益作用并不重要。在营养液中添加硅有利于两种牧草的芽干物质产生和根干物质产生,在忽略 K、Ca 和 Mg 的处理中;N 和 S 没有观察到相同的效果。我们得出结论,硅的应用减弱了牧草 BRS Zuri 和 BRS RB331 Ipyporã 中钾、钙和镁缺乏的影响,因为它增加了累积的茎干质量,这是由于更有效地利用这些营养素。在氮和硫缺乏的牧草植物中,硅的有益作用并不重要。在营养液中添加硅有利于两种牧草的芽干物质产生和根干物质产生,在忽略 K、Ca 和 Mg 的处理中;N 和 S 没有观察到相同的效果。我们得出结论,硅的应用减弱了 BRS Zuri 和 BRS RB331 Ipyporã 牧草中钾、钙和镁缺乏的影响,因为它增加了累积的茎干质量,因为更有效地利用这些营养素。在氮和硫缺乏的牧草植物中,硅的有益作用并不重要。和 BRS Zuri 和 BRS RB331 Ipyporã 牧草中的镁缺乏,因为它增加了累积的芽干质量,因为这些养分的利用效率更高。在氮和硫缺乏的牧草植物中,硅的有益作用并不重要。和 BRS Zuri 和 BRS RB331 Ipyporã 牧草中的镁缺乏,因为它增加了累积的芽干质量,因为这些养分的利用效率更高。在氮和硫缺乏的牧草植物中,硅的有益作用并不重要。
更新日期:2020-07-27
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