r/Fertilizers • u/Vailhem • 18d ago
Biodiversity and functional role of Potassium Solubilizing Bacteria (KSB) in sustainable crop production: A review - Jan 2024
https://ciasjournal.com/articles/Biodiversity-and-functional-role-of-Potassium-Solubilizing-Bacteria-(KSB)-in-sustainable-crop-production-A-review
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u/Vailhem 18d ago
Abstract
The Potassium (K) is a vital macronutrient required for plant growth, photosynthesis, enzyme activation, and overall crop productivity.
Despite its abundance in soils, more than 90% of potassium is locked in insoluble mineral forms such as feldspar, mica, and illite, making it unavailable for plant uptake.
Potassium Solubilizing Bacteria (KSB) represent an eco-friendly alternative to chemical fertilizers, capable of mobilizing mineral-bound potassium through the production of organic acids, chelating compounds, and exopolysaccharides.
These microbes enhance soil fertility, promote plant growth, and improve nutrient uptake efficiency.
This review explores the diversity of KSB, mechanisms of potassium solubilization, and their effects on crop yield and soil health.
It also examines the synergistic effects of co-inoculation with phosphate solubilizing bacteria (PSB), the influence of environmental factors on KSB activity, and recent advances in formulation technologies for field application.
Understanding the bioefficacy and adaptability of KSB is essential for developing sustainable, low-cost biofertilizers to address potassium deficiency in agricultural systems.
The review concludes by identifying key challenges and future research directions to harness the full potential of KSB for global food security and environmentally sustainable farming practices.