Publication Date
1997
Description
The objective of this work was to study the response of a silvopastoral system (soil fertility, pine and grass growth) to different levels of amendments and fertilizer and to evaluate the interaction between grass and pines. Since 1994, five treatments including two Linz- Donawitz (LD) slag doses, NPK fertilizer and a combination of LD slag and NPK fertilizer were applied every year on a pinewood stand (7-8 year old, and 4*4 average spacing), repeating the treatments in two areas, one, sown with productive grass and legume species, and, the other, maintaining the spontaneus species. Soil pH increased 0.46 units with application of LD slag. The joint application of LD slag and NPK fertilizer produced a higher increment of soil P (15.5 mg/kg from 0 mg/kg) than the application of NPK fertilizer alone. There is a slight accumulation of soil Mn (535 mg/kg) due to the high amounts of slag added. Pine height and diameter growth is enhanced by the slag but the NPK fertilizer produced the higher increments, being more important in response in the unsown area than in the sown area.
Citation
Pinto, M; Besga, G; Virgel, S; and Rodrigues, M, "Management of Soil Fertility and Grass-Pine Interactions in Silvopastoral Systems" (2024). IGC Proceedings (1997-2023). 7.
https://uknowledge.uky.edu/igc/1997/session18/7
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Management of Soil Fertility and Grass-Pine Interactions in Silvopastoral Systems
The objective of this work was to study the response of a silvopastoral system (soil fertility, pine and grass growth) to different levels of amendments and fertilizer and to evaluate the interaction between grass and pines. Since 1994, five treatments including two Linz- Donawitz (LD) slag doses, NPK fertilizer and a combination of LD slag and NPK fertilizer were applied every year on a pinewood stand (7-8 year old, and 4*4 average spacing), repeating the treatments in two areas, one, sown with productive grass and legume species, and, the other, maintaining the spontaneus species. Soil pH increased 0.46 units with application of LD slag. The joint application of LD slag and NPK fertilizer produced a higher increment of soil P (15.5 mg/kg from 0 mg/kg) than the application of NPK fertilizer alone. There is a slight accumulation of soil Mn (535 mg/kg) due to the high amounts of slag added. Pine height and diameter growth is enhanced by the slag but the NPK fertilizer produced the higher increments, being more important in response in the unsown area than in the sown area.
