Accumulation of Nitrogen in Minesoils Seeded to Black Locust1
- E. M. Jencks,
- E. H. Tyron and
- M. Contri2
Nitrogen accumulation in minesoils developing in replaced coal surface-mine overburden seeded with black locust (Robinia pseudoacacia L.) was surveyed. Nitrogen increased significantly with age from 5 to 18 years at depths of 0 to 5, 5 to 10, and 10 to 15 cm, until it equaled or exceeded that in adjacent, native soils; however, the rate of increase was slower in the lower depths. Averages of the N content in all three depths showed that the oldest age group of minesoils (16 to 18 years) accumulated 2,974 kg/ha under black locust, which was slightly higher than the 2,808 kg/ha of N found in an adjacent native soil under mixed hardwood.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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