Pindo Palm fruit yield and its relationship with edaphic factors in natural populations in Rio Grande do Sul

摘要

The objective of this study was to evaluate the fruit yield of naturally occurring populations of Pindo palms ( Butia odorata ) in different habitats and agricultural ecosystems. Three areas were selected in the municipalities of Barra do Ribeiro, Tapes and Arambar??, all of which are located on the Litoral M??dio in the state of Rio Grande do Sul, Brazil. Eleven 25x100m?2 plots were selected in the aforementioned areas, and fruit yield was evaluated in the 2008 and 2009 seasons. Chemical conditions of the soil in each plot, elevation of terrain, height, and density of the reproductive Pindo palms were also assessed. Data analysis revealed a strong correlation between the edaphic conditions and the yield from the Pindo palms. Tapes Pindo palms exhibited higher fruit yield as a result of an increase in the number of bunches produced per plant, along with highly fertile soils and greater availability of calcium and magnesium. The lowest fruit yields were linked to nutrient-poor soils in Brachiaria pastures, as well as sandy plains containing high levels of sodium. Changes in the characteristics of the soils associated with habitat and management influenced the fruit yield of Pindo palms.