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Azospirillum is one of the most widely used biofertilizers in sustainable agriculture. It is a beneficial nitrogen-fixing bacteria that helps improve plant growth naturally by increasing nitrogen availability and promoting root development.

Zinc is one of the most important micronutrients required for healthy plant growth and higher crop productivity. However, in many agricultural soils, zinc is present in insoluble forms that plants cannot absorb efficiently. Zinc deficiency can lead to poor crop growth, reduced yield, and lower crop quality.