Theme 04: Soil Fertility and Plant Nutrition
Archived
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Publication Date
2001
Location
Brazil
Description
The objective of this study was to measure the dynamics (immobilization and release) of N and to evaluate the effect of the initial chemical composition of four Panicum maximum cultivars grown in a Alfisol and fertilized with different levels of nitrogen (0, 80 e 160 kg ha-1 de N) and phosphorus (0 e 200 kg ha-1), on the release of the N from the litter using the litterbags technique. There was an increase in the litter initial concentration of N with time of decomposition. The Aruana and Vencedor cultivars released about 70 and 60% of N; respectively, during the decomposition of the litter from 0 (zero) to 336 days; the Tobiatã and Tanzânia cultivars released about 30 and >30% of N from the concentration of the initial litter respectively. Nitrogen fertization increased the N release, up to 20% in the highest N level tested (160 kg ha-1 of N).
Citation
Schunke, R. M.; Kiehl, J. C.; Paulino, Valdinei T.; Urquiaga, S.; Bodey, R. M.; and Alves, B., "Nitrogen Dynamics from Decomposing Litter of Panicum maximum with Different Nitrogen and Phosphorus Content in Brazilian Alfissol" (2001). IGC Proceedings (1985-2023). 43.
(URL: https://uknowledge.uky.edu/igc/19/4/43)
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Nitrogen Dynamics from Decomposing Litter of Panicum maximum with Different Nitrogen and Phosphorus Content in Brazilian Alfissol
Brazil
The objective of this study was to measure the dynamics (immobilization and release) of N and to evaluate the effect of the initial chemical composition of four Panicum maximum cultivars grown in a Alfisol and fertilized with different levels of nitrogen (0, 80 e 160 kg ha-1 de N) and phosphorus (0 e 200 kg ha-1), on the release of the N from the litter using the litterbags technique. There was an increase in the litter initial concentration of N with time of decomposition. The Aruana and Vencedor cultivars released about 70 and 60% of N; respectively, during the decomposition of the litter from 0 (zero) to 336 days; the Tobiatã and Tanzânia cultivars released about 30 and >30% of N from the concentration of the initial litter respectively. Nitrogen fertization increased the N release, up to 20% in the highest N level tested (160 kg ha-1 of N).
