Depending on the type of biofertilizer used, the particular soil conditions, and the management techniques applied, the effect of biofertilizers on the emission of greenhouse gases from soils might vary. In general, biofertilizers can have a beneficial or negative impact on greenhouse gas emissions:
Reduced need for synthetic chemical fertilizers: Reducing the need for synthetic chemical fertilizers is one important way that biofertilizers can help reduce greenhouse gas emissions. Synthetic fertilizer manufacture and application are energy-intensive processes that emit greenhouse gases, especially nitrous oxide (N2O) when nitrogen-based fertilizers are produced. The overall greenhouse gas emissions linked to fertilizer use can be decreased by employing biofertilizers, which deliver nutrients more effectively and are frequently generated using lower energy inputs.
Some biofertilizers contain nitrogen-fixing bacteria that transform atmospheric nitrogen into plant-available forms, resulting in nitrogen fixation and decreased N2O emissions. This lessens the need on fertilizers based on nitrogen, which are known to have a major impact on N2O emissions. Therefore, using biofertilizers can reduce the amount of N2O that is released from agricultural soils.
Increased organic matter and carbon sequestration: Biofertilizers can increase the input of organic matter into the soil, especially those that contain helpful microbes that promote organic matter decomposition. Increased organic matter content enhances soil structure and water retention while also encouraging the soil’s ability to store carbon. By storing carbon in the soil, this technique reduces the amount of greenhouse gas emissions, hence preventing climate change.
The microorganisms in biofertilizers can solubilize nutrients and increase their availability in the soil, and biostimulants can increase the plant’s capacity to absorb and use these nutrients effectively. Better nutrient absorption and overall plant nutrition may result from this combination.
Increased ability to withstand stress: Biostimulants can assist plants in surviving a variety of stressful situations, including drought and severe temperatures. When used in conjunction with biofertilizers, which offer vital nutrients and support overall plant health, plants are better able to endure stress and continue to produce even under challenging circumstances.
