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Details for article 1 of 24 found articles
| Title: |
Acidification of a cultivated Alfisol in Venezuela |
| Author: |
Millan, F. Hetier, J. M. Moreau, R. Petard, J. Burguera, M. |
| Appeared in: |
Communications in soil science and plant analysis |
| Paging: | Volume 30 (1999) nr. 1-2 pages 183-198 |
| Year: |
1999-01 |
| Contents: |
A moderately acid sandy clay Alfisol was used to grow corn as a monoculture for twenty years using urea fertilization. Successive samplings were performed during crop growth over the last two years (1993 and 1994) in the upper two soil layers (0-20 cm and 20-40 cm) of the control plot where the addition of urea had been interrupted and in a plot still receiving urea (N=132 kg ha-1). Although aluminum (Al) in 1M KCl reached 2 cmolc kg-1 and 70% of the effective CEC, Al speciation revealed that the aluminum in the soil solution was well below the toxicity threshold. The results of measurements of pH, buffering capacity, and water-soluble NO3- and K+ or exchangeable cations (NH4+, Ca++, Mg++, Al+++) suggested an increase in acid neutralization capacity (ANC) in the control plot and an insignificant decrease in the fertilized plot. |
| Publisher: |
Taylor & Francis |
| Source file: |
Elektronische Wetenschappelijke Tijdschriften |
Details for article 1 of 24 found articles
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