There have been reports of symphlans in early established crops. Symphla are a natural part of healthy soil biota, & can be found under healthy crops however at very high numbers may cause root damage.

During the 2008/09 season, a number of cotton fields in Theodore had problems with seedling establishment in areas where large numbers of symphyla were present.

Day Degree accumulation Stunted crops in Theodore caused by 'new' soil inhabiting arthropods Spotty Cotton CottASSIST website