Geotechnologies and Soil Mapping for Delimitation of Management Zones as an Approach to Precision Viticulture

Autor: José Maria Filippini Alba, Carlos Alberto Flores, Alberto Miele
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: Applied and Environmental Soil Science, Vol 2017 (2017)
Druh dokumentu: article
ISSN: 1687-7667
1687-7675
DOI: 10.1155/2017/4180965
Popis: Data of the physical and chemical properties of soils from three vineyards located in Vale dos Vinhedos, Bento Gonçalves, Rio Grande do Sul state, in southern Brazil, were processed. Soil mapping was performed by means of four profiles and the digital elevation model in detailed scale. Then, superficial soils (0–20 cm) were sampled according to a grid pattern. Analysis of variance (ANOVA), kriging, and unsupervised classification methods were applied on physical and chemical data of superficial soils sampled according to grid pattern. This study aimed to compare both methods, the conventional soil mapping and the map produced with superficial soil sampling, about their potential for definition of the management zones, as an approach for precision agriculture. Maps elaborated by conventional soil mapping overlapped partially with the maps derived from superficial sampling, probably due to the specific methodological differences of each case. Anyway, both methods are complementary because of the focus on vertical variability and horizontal variability, respectively. In that sense, slope appears as significant edaphic parameter, due to its control on water circulation in the profile of soil.
Databáze: Directory of Open Access Journals
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