Abstract
Naturally occurring humic substances in soils hold promise as a factor related to restoring native plants. We have characterized the humic acids (HA) from inside and outside slickspots of two sites in the Juniper Butte Range soils on the Snake River Plain in Southwest Idaho. These HA may promote the establishment of native slickspot peppergrass (Lepidium papilliferum) seedlings. The HA were extracted from the silt, vesicular, and clay layers using a modified International Humic Substances Society method, and isolated by membrane filtration, precipitation, dialysis, and freeze-drying. Elemental analyses showed minor differences between HA; the inside surface silt samples had higher C and N values than the outside or the deeper samples. Differences were also noted between sample sites and between the samples for carbohydrates, amino acids, and acidity functionalities. Fourier transform infrared and fluorescence, and especially cross-polarization magic angle spinning 13C-nuclear magnetic resonance spectroscopies, provided compositional information and highlighted differences between the samples.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
