Irrigação com água tratada magneticamente na cultura da Melissa officinalis L.

Abstract

The objective of this study was to evaluate the influence of the applied water volume and the differentiated water treatments in the growth rate in plant height, pH and electrical conductivity of the solution drained from lemon blam produced in pot and in greenhouse, irrigated by drip with untreated water (UW) and magnetically treated (MTW). The crop evapotranspirationwas estimated by weighing lysimeter, using 25%, 75%, 100% and 125% of the crop evapotranspiration (Etc) applied with UW and MTW, where each treatment had four replicates with six plants. Plant height, stem diameter, electrical conductivity and pH of the drained solution were evaluated. The results show, based on analysis of the variance (Test F), test of means (Scott-Knott) and regression, that the type of water influenced the diameter of the stem, where the treatment irrigated with 25% UW presented lower values than the treatment with 25% MTW. For plant height and height growth, only the volume of water applied was significantly different, where treatments irrigated with 25% of ETc presented lower values than the others. Regarding the electrical conductivity and pH of the drained solution, it was observed that there was no difference among the treatments applied.