Manure Injection

The traditional way of applying manure to crops as fertilizer results in significant air pollution and greenhouse gas emissions, as well as strong odors. The manure slurry is applied to the surface of the field, then left to dry for several days, after which a tractor passes through and incorporates the manure nutrients into the soil. During the drying process, manure nutrients are lost to the atmosphere as ammonium and volatile organic compounds (VOCs) pollute the air, exacerbating serious air pollution in California’s Central Valley. In addition, methane – a potent greenhouse gas – is released from the decomposing manure.