Sigma AgriScience

North America’s leading manufacturer of high quality organic granular fertilizers.

<div>  <p>    North America&rsquo;s leading manufacturer of high quality organic granular fertilizers.  </p></div>

Sigma Agriscience

Natural Fertilizers

Contain bacteria such as Rhizobia, Azotobacter, Azospirillum, and blue-green algae that transform nitrogen into organic compounds that can be absorbed by the plant

Contain bacteria and fungi capable of breaking down insoluble phosphates to make them available to crops

Contain rhizobacteria that can act as biofertilizers, bioprotectants

Contain organic matter such as animal dung which enriches the soil with microorganisms

Fertilizers derived from animal materials such as cow manure, crushed animal bones, animal blood, shellfish, and fish meal

Fertilizers made with plant material such as compost produced from plant waste, seaweed, cottonseed meal, and soybean meal

Fertilizers developed from natural elements like greensand, rock phosphate, and nitrogen from air

Sigma Agriscience

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