SOIL FERTILITY UNDER PASTURES, ANNUAL AND PERENNIAL CROPS IN THE NORTHWESTERN REGION OF THE STATE OF PARANÁ

  • Jonez Fidalski IAPAR

Abstract

Caiuá geological formation represents 15% of the state of Paraná area, Brazil, from which 70% are covered with pasture. Soils originated from Caiuá sandstone present low acidity and fertility. Aiming to evaluate the field nutritional condition of these soils, 49 farms were chosen to carry out a comparative study of 201 soil samples of pastures, annual crops and perennial crops in the Inhacanga (Altônia) and Cigarras (Alto Paraná) rivers basins, April through August, 1990. This survey showed that the pastures contained higher K and carbon content when compared to perennial and annual crops. The pastures and annual crops showed low P content in the soil. Higher soil acidity in perennial crops was attributed to nitrogenated fertilizers. The annual crops used to recover pastures showed lower soil fertility in relation to pasture and perennial crops.

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Author Biography

Jonez Fidalski, IAPAR
Possui graduação em Agronomia pela Universidade Federal de Santa Catarina (1987) , mestrado em Agronomia pela Universidade Estadual de Maringá (2004) e doutorado em Agronomia pela Universidade Estadual de Maringá (2007) . Atualmente é Pesquisador do Instituto Agronômico do Paraná, Revisor de periódico da Pesquisa Agropecuária Brasileira, Revisor de periódico da Revista Brasileira de Ciência do Solo e Revisor de periódico da Acta Scientiarum. Agronomy. Tem experiência na área de Agronomia , com ênfase em Ciência do Solo. Atuando principalmente nos seguintes temas: Propriedades físicas do solo, densidade do solo, compactação do solo, água no solo, manejo do solo e qualidade fisica do solo Currículo Lattes
Published
2008-07-28
Section
Agronomy