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| Format: | Artículo científico |
| Language: | es |
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Universidade Federal de Goiás
2009
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| Online Access: | https://www.redalyc.org/articulo.oa?id=253020183006 |
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Table of Contents:
- INFLUÊNCIA DO USO E DA POSIÇÃO DO PERFIL NO RELEVO NA FERTILIDADE DE SOLOS EM ÁREAS DE ENCOSTA Antonio Clementino dos Santos Ignácio Hernan Salcedo Ana Lúcia Bezerra Candeias Sandra Regina da Silva Galvão Agrociencias slope areas Texture class chemical and morphological soil properties Soil fertility parameters (pH, Ca, Mg, organic matter, phosphorus, and potassium) were evaluated, with the objective of verifying the influence of use and topographic position in soil fertility, in the Vaca Brava watershed, State of Paraíba, Brazil. Soil samples were stratified in six uses (agriculture; grassland; grass forage; forest; Mimosa Caesalpiniifolia, Benth.; and brushwood) and three positions in the landscape (shoulder, backslope and footslope). The average values and descriptive analysis of soil fertility parameters were low for the three studied positions, characterizing a soil with low fertility levels. In general, pH (shoulder = 5.11, backslope = 5.25, and footslope = 5.4), Ca and Mg values were not statistically different, presenting values ranging from 1.92 cmolc kg-1 to 1.25 cmolc kg-1, for the shoulder; 1.8 cmolc kg-1 to 1.17 cmolc kg-1, for backslope; and 0.74 cmolc kg-1 to 1.67 cmolc kg-1, for footslope, respectively. The texture class influenced soil properties with stronger intensity than distinct soil uses. The position in the slope did not influence soil attributes directly. However, they were expressed as texture variations. The analysis of the proportion of samples, in the different levels of sufficiency of P and K, based on different land uses, texture classes, and positions in the slope, indicated a generalized deficiency of P, which was more intense than the K one. 2009 artículo científico 1517-6398 https://www.redalyc.org/articulo.oa?id=253020183006 es http://www.redalyc.org/revista.oa?id=2530 Pesquisa Agropecuária Tropical application/pdf Universidade Federal de Goiás Pesquisa Agropecuária Tropical (Brasil) Num.1 Vol.39