TEMPORAL PERSISTENCE OF SOIL WATER STORAGE TO IDENTIFY LOCAL SITES FOR ADEQUATED MONITORING OF SOIL WATER
The water layer stored in the soil in a vegetated area presents spatial-temporal variation, which establishes uncertainties regarding the region to be monitored for irrigation control purposes. Assuming that its spatial pattern of distribution is persistent over time, one can identify the region tha...
| Autores: | , , , , |
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| Tipo de documento: | artigo |
| Estado: | Versão publicada |
| Data de publicação: | 2020 |
| País: | Brasil |
| Recursos: | Universidade Federal de Viçosa (UFV) |
| Repositório: | Engenharia na Agricultura |
| Idioma: | português |
| OAI Identifier: | oai:ojs.periodicos.ufv.br:article/6257 |
| Acesso em linha: | https://periodicos.ufv.br/reveng/article/view/6257 |
| Access Level: | Acceso aberto |
| Palavra-chave: | cross-semivariogram geoestatistics temporal stability |
| Resumo: | The water layer stored in the soil in a vegetated area presents spatial-temporal variation, which establishes uncertainties regarding the region to be monitored for irrigation control purposes. Assuming that its spatial pattern of distribution is persistent over time, one can identify the region that systematically presents mean values representative of the entire area, using temporal stability analyses. However, this regional temporal persistence is always associated with a variability around the overall mean, which led to the proposition of a temporal consistency indicator (TCI). For the execution of this work, Urochloa decumbens was grown in an experimental, very clayey soil, over two annual cycles. In each cycle, measurements were made of the water stored in the soil (ARM) during soil drying cycles. The use of geostatistical techniques associated with the temporal stability analysis were performed. The results show that it is possible to characterize TCI as an adequate and convenient indicator to support decision making in questions related to soil water monitoring in irrigated agricultural systems. |
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