Abstract
The objective of this experiment was to evaluate the flow, the distribution uniformity coefficient and flow coefficient of variation of different autocompensantes driplines undergo solutions with different concentrations of soluble iron in irrigation water. This research was conducted at the School Irrigation Irrigation Laboratory Agriculture "Luiz de Queiroz" - ESALQ / USP, located in Piracicaba - SP. The treatments carried out can be summarized as follows in Step 1: 6 mg -1 of Fe +2 (iron oxide) + organic load (LAG water); in step 2: 18.8 mg L -1 of Fe + 2 (ferrous sulfate, iron oxide and iron hydroxide) + suspended solids (soil - 409 mg L -1 ) + organic load with the emitters positioned upward. After tabulated data, they proceeded to the calculations of the flow, distribution uniformity coefficient and flow coefficient of variation. The uniformity of application was affected by Fe +2 application causing changes gradually, which tend to increase with the time of application.
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