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Bio-extraction of Potassium from Glauconite Nano-particle in an Alfisols of Southern India
Communications in Soil Science and Plant Analysis ( IF 1.8 ) Pub Date : 2020-07-19 , DOI: 10.1080/00103624.2020.1798984
Shaheen Praveen 1 , Tapan Adhikari 1 , Muneshwar Singh 2 , A. K. Patra 3 , R. N. Singh 1
Affiliation  

ABSTRACT Glauconite is a potassium (K) bearing mineral, which generally contains 6–10% K2O and mostly available in various natural deposits in India. Glauconite mineral was converted to nano-particle form by grinding in a high-energy ball mill. The release of K from glauconite nano-particle in soil was studied in a pot culture experiment. Five different treatments viz., 0 mg K2O kg−1, 100 mg K2O kg−1, 150 mg K2O kg−1, 200 mg K2O kg−1 used glauconite nano-particle (GNP) as a K source and 100 mg K2O kg−1 from muriate of potash (MOP), were applied in soil to grow maize (Zea mays L.) plant. The highest K+ concentration was observed in shoot at the application of 200 mg K2O kg−1 through GNP and recorded 2 times more K+ concentration in shoots as compared to 0 mg K2O kg−1 treatment whereas 1.1 times more than the MOP treated soil at 5th harvesting stage. Selected plant physiological parameters namely electrical conductivity of plant cell, height, leaf area and nitrate reductase activity were also recorded maximum at 200 mg K2O kg−1 GNP treated soil. Overall, glauconite nano-particle could supply K throughout the growth period and enhanced biomass yield of maize plant without showing any K deficiency symptom.

中文翻译:

从印度南部铝溶胶中海绿石纳米颗粒中生物提取钾

摘要 海绿石是一种含钾 (K) 矿物,通常含有 6-10% 的 K2O,主要存在于印度的各种天然矿床中。通过在高能球磨机中研磨将海绿石矿物转化为纳米颗粒形式。在盆栽实验中研究了土壤中海绿石纳米颗粒中钾的释放。五种不同的处理,即 0 mg K2O kg-1、100 mg K2O kg-1、150 mg K2O kg-1、200 mg K2O kg-1 使用海绿石纳米颗粒 (GNP) 作为钾源和 100 mg K2O kg -1 来自氯化钾 (MOP),被施用于土壤中以种植玉米 (Zea mays L.) 植物。在通过 GNP 施用 200 mg K2O kg-1 时,在芽中观察到最高 K+ 浓度,与 0 mg K2O kg-1 处理相比,芽中 K+ 浓度高出 2 倍,而在第 5 天时是 MOP 处理土壤的 1.1 倍收获阶段。选定的植物生理参数,即植物细胞的电导率、高度、叶面积和硝酸还原酶活性也在 200 mg K2O kg-1 GNP 处理的土壤中记录到最大值。总体而言,海绿石纳米颗粒可以在整个生育期提供钾并提高玉米植物的生物量产量,而不会表现出任何缺钾症状。
更新日期:2020-07-19
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