Bahia grass – friend or foe?
 |
Many growers are surprised at our usage of bahiagrass. They consider this ‘weed’ to be highly problematic and difficult to remove. The characteristics that make it persistent, however, are the same characteristics that can be used to enhance soil quality. The fast growing and extensive root system can contribute up to 0.1% increase in soil carbon annually, as well as enhancing the soil porosity and moisture retention. Earlier studies have also shown a role for bahiagrass in decreasing nematode pests and increasing soil microbial populations. Researchers David Wright and James Marois have documented the benefits of bahiagrass in a diversity of systems and are now investigating it in rotations that include forage for cattle. |
| A major challenge to any successful organic production program is establishing sustainable methods to enhance soil quality. Since this is primary benefit of bahiagrass, we reasoned why not incorporate this strategy into organic production? |
  |
  |
Our previous work has shown that sod based rotation with bahiagrass:1)Increases soil carbon of nutritionally deplete soils at a rate of 0.1% per year.2)Increases soil moisture retention3)Reduces soil compaction4)Increases earthworm populations but reduces nematode pests.
These factors result in reduced inputs (fertilization, irrigation and pesticides) and higher yields in many crops. |