BBAuthors: Naveed, M.; Advisor: -; Participants: Brown, L.K.; Raffan, A.C.; George, T.S.; Bengough, A.G. (2018)
The water sorptivity and repellency index of air‐dry soil were measured using a miniaturized infiltrometer device with a 1‐mm tip radius. Soil hardness increased by 28% for barley root exudate, 62% for maize root exudate, and 86% for chia seed exudate at 4.6 mg g−1 concentration in the sandy loam soil. For the clay loam soil, root exudates did not affect soil hardness, whereas chia seed exudate increased soil hardness by 48% at 4.6 mg g−1 concentration. Soil water repellency increased by 48% for chia seed exudate and 23% for maize root exudate but not for barley root exudate at 4.6 mg g−1 concentration in the sandy loam soil. For the clay loam soil, chia seed exudate increased water r... 
