Departamento de Ciências da Produção Agrícola, Universidade Estadual Paulista (Unesp), Faculdade de Ciências Agrárias e Veterinárias, Jaboticabal. Via de Acesso Prof, Paulo Donato Castellane s/n - Jaboticabal/SP - 14884-900, Brazil.
Departamento de Ciências da Produção Agrícola, Universidade Estadual Paulista (Unesp), Faculdade de Ciências Agrárias e Veterinárias, Jaboticabal. Via de Acesso Prof, Paulo Donato Castellane s/n - Jaboticabal/SP - 14884-900, Brazil.
Food Chem. 2022 Feb 15;370:131017. doi: 10.1016/j.foodchem.2021.131017. Epub 2021 Sep 1.
The decrease in the use of K fertilizers may be relevant for developing countries that depend on imports, as well as for specific groups such as patients with chronic kidney disease, who have restricted K in their diets. However, the decrease in the use of K affects plant yield, requiring the study of alternatives to mitigate nutritional stress. Sodium is a beneficial element that can mitigate K deficiency, but studies on kale plants are lacking. We investigated the role of Na in kale grown with and without K in nutrient feed solution. Four treatments were used: abundant K, abundant K plus Na, deficient K, and deficient K plus Na. Low Na (2 mmol L) attenuated the symptoms of K deficiency in kale by minimizing leaf water loss and increasing pigment content, leaf area, and plant dry mass. The synergism between K and Na negatively affected the growth of kale plants.
钾肥用量的减少可能与依赖进口的发展中国家以及慢性肾病等特定群体有关，因为这些患者的饮食受到限制。然而，钾肥用量的减少会影响植物的产量，需要研究替代方法来减轻营养压力。钠是一种有益的元素，可以缓解钾缺乏症，但关于羽衣甘蓝植物的研究还很缺乏。我们研究了在养分供应溶液中含有和不含有钾的情况下，钠对羽衣甘蓝的作用。使用了四种处理方法：钾充足、钾充足加钠、钾缺乏和钾缺乏加钠。低浓度的钠（2mmol/L）通过最小化叶片水分损失和增加色素含量、叶片面积和植物干质量，减轻了羽衣甘蓝缺钾症状。钾和钠之间的协同作用对羽衣甘蓝植物的生长产生了负面影响。
