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- W1983294008 abstract "Conversion to reduced-tillage management systems by winter wheat (Triticum aestivum L.) producers may cause changes in soil organic-matter transformations. This study was conducted to monitor C, N, P, and S mineralization differences between soils with notillage and conventional-tillage winter wheat/summer fallow management histories. Intact soil cores were taken from research plots that had been in no-tillage and conventional tillage for 16 yr. Cores were incubated at 25 °C and 350 g water kg−1 soil for 84 d. Carbon dioxide evolution, NO3-N, NH4-N, PO4-P (as NaHCO3-exchangeable P), SO4-S and recoverable plant-residue (>2 mm) content were determined for soil depths of 0 to 2.5 cm, 2.5 to 5 cm, and 5 to 15 cm at 0, 7, 14, 28, 56 and 84 d of incubation. No-till soils accumulated greater NO3-N, SO4-S, and PO4-P at the 0- to 2.5-cm soil depth than did year-old plow (preplow) and recently plowed (plow) soils. Tillage did not influence net N, P, and S mineralization below the 5-cm soil depth. No-tillage soils peaked at 26 kg ha−1 SO4-4 in the top 15 cm compared with 19 and 15 kg ha−1 SO4-S for plow and preplow soils, respectively. A nonstoichiometric accumulation of soil NO3-N, PO4-P, and SO4-S was observed within and among tillage treatments, indicating that N, P, and S transformations were partially controlled by separate processes associated with the tillage operations." @default.
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- W1983294008 date "1990-03-01" @default.
- W1983294008 modified "2023-09-27" @default.
- W1983294008 title "Carbon, Nitrogen, Phosphorus, and Sulfur Mineralization in Plow and No-Till Cultivation" @default.
- W1983294008 doi "https://doi.org/10.2136/sssaj1990.03615995005400020028x" @default.
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