Produção Nacional
Spatial variability of soil fertility and its relationship with seed physiological potential in a soybean production area
2012; SciELO; Volume: 34; Issue: 2 Linguagem: Inglês
10.1590/s0101-31222012000200002
ISSN1806-9975
AutoresVitor Henrique Vaz Mondo, Francisco Guilhien Gomes, Taís Leite Ferreira Pinto, José Luís de Marchi, Anamari Viegas de Araújo Motomiya, José Paulo Molin, Sílvio Moure Cicero,
Tópico(s)Banana Cultivation and Research
ResumoThe correlation of soil fertility x seed physiological potential is very important in the area of seed technology but results published with that theme are contradictory. For this reason, this study to evaluate the correlations between soil chemical properties and physiological potential of soybean seeds. On georeferenced points, both soil and seeds were sampled for analysis of soil fertility and seed physiological potential. Data were assessed by the following analyses: descriptive statistics; Pearson's linear correlation; and geostatistics. The adjusted parameters of the semivariograms were used to produce maps of spatial distribution for each variable. Organic matter content, Mn and Cu showed significant effects on seed germination. Most variables studied presented moderate to high spatial dependence. Germination and accelerated aging of seeds, and P, Ca, Mg, Mn, Cu and Zn showed a better fit to spherical semivariogram: organic matter, pH and K had a better fit to Gaussian model; and V% and Fe showed a better fit to the linear model. The values for range of spatial dependence varied from 89.9 m for P until 651.4 m for Fe. These values should be considered when new samples are collected for assessing soil fertility in this production area.
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