Publication Date
1997
Description
Experiments were carried out in order to evaluate the impact of mechanical perturbations, phosphorous fertilization and grazing on the native grasslands. Six treatments were tested: three without grazing and three subjected to grazing. Both situations were plowed, plowed plus fertilization or kept untreated. During the study botanical composition, vegetative cover, species diversity and above ground biomass were measured. Plowed and plowed plus fertilization treatments drastically reduce all of these parameters related to community structure and forage production. These figures contrasted with the non-perturbated treatments, were values did not change significantly from the original state. Mechanical perturbations provoked reductions on grassland biomass availability which was recovered in eight months. After two years, no beneficial effects were observed on the plowed and fertilized treatments for grazed and ungrazed systems. Furthermore, results suggest that farm practices including the phosphorus fertilization induced negatives changes in the succession process.
Citation
Ansin, O E.; Oyhamburu, E M.; and Delgado Caffe, J L., "Disturbance by Mechanical Phosphorous Fertilization on the Cover and Biomass of Humid Alkaline Communities of the Flooding Pampa (Argentina)" (2024). IGC Proceedings (1993-2023). 4.
https://uknowledge.uky.edu/igc/1997/session21/4
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Disturbance by Mechanical Phosphorous Fertilization on the Cover and Biomass of Humid Alkaline Communities of the Flooding Pampa (Argentina)
Experiments were carried out in order to evaluate the impact of mechanical perturbations, phosphorous fertilization and grazing on the native grasslands. Six treatments were tested: three without grazing and three subjected to grazing. Both situations were plowed, plowed plus fertilization or kept untreated. During the study botanical composition, vegetative cover, species diversity and above ground biomass were measured. Plowed and plowed plus fertilization treatments drastically reduce all of these parameters related to community structure and forage production. These figures contrasted with the non-perturbated treatments, were values did not change significantly from the original state. Mechanical perturbations provoked reductions on grassland biomass availability which was recovered in eight months. After two years, no beneficial effects were observed on the plowed and fertilized treatments for grazed and ungrazed systems. Furthermore, results suggest that farm practices including the phosphorus fertilization induced negatives changes in the succession process.
