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Combined application of mica waste and Bacillus pseudomycoides as a potassium solubilizing bio-fertilizer reduced the dose of potassium fertilizer in tea-growing soil
Agroecology and Sustainable Food Systems ( IF 2.6 ) Pub Date : 2020-12-10
Prabhat Pramanik, Chayanika Kalita, Krishna Borah, Pallabi Kalita

ABSTRACT

Potassium-solubilizing bacteria (KSB) are often used in the field of vegetable and horticultural crops. In this study, a strain of Bacillus pseudomycoides was used as the KSB strain and different combinations of muriate of potash (MoP) and mica waste (MW) along with that strain were applied in soil to evaluate its effect on exchangeable K content in soil and yield of tea shoots. The objective of this experiment was to evaluate the possibility of applying an indigenous KSB strain and MW combination for reducing doses of MoP during cultivation of perennial crops like tea. The study over two consecutive years revealed that cumulative tea production of some of the applied treatments was significantly higher than that of recommended MoP treatment. Application of KSB and MW in the first split instead of MoP recorded higher exchangeable K content in soil during August to October, especially in the second year of the study. The study confirmed B. pseudomycoides can be used as a KSB biofertilizer in soil and application of MW and KSB combined replacing MoP in the first split could be economical as well as improving K use-efficiency in soil and increased yield and K-uptake by the plants.



中文翻译:

云母废料和假芽孢杆菌结合使用作为增钾生物肥料可减少茶园土壤中钾肥的用量

摘要

增钾细菌(KSB)通常用于蔬菜和园艺作物领域。在这项研究中,假芽胞杆菌菌株将其用作KSB菌株,并在土壤中施用钾肥(MoP)和云母废料(MW)的不同组合以及该菌株对土壤中可交换K含量和茶笋产量的影响。本实验的目的是评估在种植多年生作物(如茶)过程中应用本地KSB菌株和MW组合降低MoP剂量的可能性。连续两年的研究表明,某些应用处理的累积茶产量明显高于推荐的MoP处理。在8月至10月,尤其是在研究的第二年,在第一次分裂中使用KSB和MW代替MoP记录了土壤中较高的交换性K含量。研究证实假单胞菌 可以用作土壤中的KSB生物肥料,在第一次分裂中结合使用MW和KSB替代MoP既经济又可以提高土壤中钾的利用效率,并提高植物的产量和钾吸收量。

更新日期:2020-12-11
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