WSU Tree Fruit Research & Extension Center

Organic & Integrated Tree Fruit Production

Monday, October 22, 2018

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Search results on 10/22/18

9444. Kitchen, N.R., D.G. Westfall and G.A. Peterson. 1989. Potential N and C mineralization in dryland no-till cropping soils as influenced by N fertilization management.. Agronomy Abstracts, Amer. Soc. Agron., Madison, WI. p. 244..
A study was conducted to determine the effects of N fertilization on potential mineralization of N and C in no-till cropped soils. A 30 day incubation was performed on soils from Sterling and Stratton, Colorado, sampled at 0-5 and 5-15 cm depths over and between crop rows. Nitrogen fertilization treatments were banded and broadcast UAN at 0, 34, and 90 kg N/ha. Net N mineralization rate was approximately 0.5 mg N/kg /soil-day greater in the Stratton 0-5 cm soil over the row than between the row. The same trend was found with C mineralization rates. Sterling soil from the 5-15 cm depth decreased in the ratio of C/N mineralized with increasing rate of N fertilization, but was not different as a result of fertilization placement. The results of this study illustrate the interaction of N and C turnover in soils.

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