Furthermore, the addition of Si in the nutrient solution resulted in a decreasing trend in leaf Zn concentration, decreasing by 19.8% and 49.8% at Si concentrations of 28 and 56 mg L −1 , respectively, compared to the control (Fig. 10 c).
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Role of silicon in alleviating boron toxicity and enhancing growth and physiological traits in hydroponically cultivated Zea mays var. Merit.
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Regarding varying concentrations of Si and B on CAT activity in maize plants, we observed a notable trend wherein CAT activity increased proportionally with increasing Si concentrations, peaking at 3- and fourfold increments in CAT activity at Si levels of 28 and 56 mg L −1 , respectively (Fig. 8 a).