Abstract:
The analysis of irrigation systems through an analysis coming from a growing interest due to the
economic and environmental performance implications associated with them is. An efficient
sprinkler irrigation system has uniform distribution and good application efficiency. In this
perspective, the present study aimed to evaluate the performance of a sprinkler irrigation system
without pumping, in irrigated land 7 de Abril-1, Vanduzi District located in Manica Province.
Tests were carried out to determine the uniformity of water distribution, in three plots, and
equidistant from each other, randomly selected and corresponding to 10% of the farms, where the
Christiansen uniformity coefficients (CUC), distribution uniformity coefficient (CUD) and
coefficient of statistical uniformity (CUE). Likewise, a characterization of the hydraulic profile of
the system was made (flow, and hydraulic loads in the distribution and distribution lines) and the
water application efficiencies of the irrigation project were determined.
The survey was carried out between the months of February to May 2021 and the main data
analysis analysis comparison with the established standards.
The coefficient of uniformity of water distribution in plot 1 was, with values between 48.2% to
64.2%, in plot 2 it was reasonable, presenting values between 55.1% to 76.4% and in plot 3 it was
announcing , presenting values between 66.5% and 84.2%. In general, the uniformity of water
distribution in the plots was considered good.
The overall efficiency of the irrigation project was around 40%, which is below the recommended
value for sprinkler irrigation systems. This value was mainly influenced by the low efficiency of
water application as a result of wind drag losses, and the use of tall tree barriers is recommended
in order to minimize the use of tall tree barriers in order to minimize the impact of strong wind in
the watering reduction process.
