Journal of Food, Agriculture and Environment

Spatial variability of chemical attributes on clayey Latosol related to crambe (Crambe abyssinica Hochst) grain yield 

Author(s):

Maycon Daniel Vieira ^{1, 2} *, Deonir Secco ¹, Amarildo de Vicente ¹, Reginaldo Ferreira Santos ¹, Helton Aparecido Rosa ¹, Gustavo Veloso ¹, Gustavo Henrique Dalposso ², Daniela Trentin Nava ²

Recieved Date: 2012-07-14, Accepted Date: 2012-10-08

Abstract:

The aim of this study was to verify, with the aid of thematic maps obtained through ordinary kriging interpolation, the existence of relation between soil chemical attributes, and crambe (Crambe abyssinica Hochst) productivity on crops grown under no-tillage system on clayey Latosol. Therefore, a research was conducted in an experimental area located in Cascavel, Paraná, Brazil. The experimental grid was established in area with dimensions of 100 m x 100 m, totalizing 100 points from which partially deformed soil samplings were collected in order to determine the pH, organic matter, P and K, and also, the yield of the crambe crop. The R software was used for the statistical analysis and the GeoR package for the geostatistical analysis. The results show that there was an insignificant relation of pH, organic matter, P and K attributes with the yield of crambe. Among the analyzed attributes, the pH showed higher relation with the productivity. The thematic maps presented higher relation with better productivity rates on values: pH ≥ 5.0, organic matter ≥ 5.5%, P ≥ 15.0 mg dm^-3 and K ≥ 0.4 cmol_c dm^-3.

Keywords:

Geostatistics, energy crops, thematic maps

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Journal: Journal of Food, Agriculture and Environment
Year: 2012
Volume: 10
Issue: 3&4
Category: Environment
Pages: 1464-1467

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