Analysis of irrigation water input time in rice farming and relationship with productivity
DOI:
https://doi.org/10.5902/2179460X86832Keywords:
RPAS, Geotechnologie, Oryza sativa (L.)Abstract
Irrigated rice has great social and economic importance in RS and studying improvements in crop management so that productivity is greater is relevant. Thus, the present work aimed to survey and map the time of irrigation water entry into two plots (31 and 50 ha) and relate it to the productivity of flood-irrigated rice from Cachoeira do Sul -RS. Monitoring of the water advance was carried out by drone. Image processing and interpolation of water entry time were performed using QGIS software. The average productivity (kg ha-1) was obtained for each interpolated time. In plot 1, the productivity of 16645.50 kg ha-1 obtained when the advance of irrigation water occurred in the first 24 h was reduced to 13982.19 kg ha-1 when it was between 24 and 48 h, and even lower than 12993 .69 kg ha-1, when the entry time was greater than 72 h. In plot 2, it was not possible to associate differences in productivity with the time of irrigation water input, which may have been due to a 50 mm rain that occurred during the irrigation period.
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