First season of irrigated cropping on a 1,000-hectare farm: lessons learned
Starting irrigated crop production on a large-scale farm is never straightforward — and this first season at our 1,000-hectare property in Durazno proved exactly that. Here is an honest account of what went right, what went wrong, and where we are headed.
The setup: existing equipment, new ambitions
The irrigation infrastructure on this farm dates from 2007 and 2011 and runs on diesel. Taking on an existing system — rather than designing one from scratch — means inheriting both its strengths and its limitations. Pre-season maintenance was carried out, but as the maize growing season began, a series of technical issues tested the operation early.
A difficult start for maize
Challenge 1 In an effort to improve system efficiency, we replaced the nozzles before the season. Unfortunately, a calculation error by the service provider meant the system lacked sufficient water pressure for the new nozzles. Resolving this took meaningful time.
Challenge 2 Once that issue was temporarily managed, a second problem surfaced: rainwater had mixed with the diesel fuel, causing engine damage across the system. Getting everything fully operational again cost us four weeks — right in the middle of the maize growing window.
Those four weeks are impossible to recover in crop terms, and the impact is amplified when, as was the case this season, Uruguay is going through a dry summer. Maize is an unforgiving crop when water stress coincides with critical growth stages.
Soybeans: a different story
The soybean season was free of the technical problems that plagued maize, and the results clearly reflect that. The crop developed substantially well throughout. That said, this season also revealed something important about the land itself: a portion of the irrigated soils appears better suited to forestry than to row cropping.
The original irrigation system design — pivot sizing and layout — was not optimised for productive irrigated agriculture. It was likely conceived with a different objective in mind. There is little that can be done about inherited infrastructure, but it is a factor to manage going forward.
The bottom line: irrigation makes a real difference
Despite a difficult first year navigating an existing system with mechanical setbacks, the yield data speaks clearly. Maize achieved close to double the yield of equivalent non-irrigated crops on the same farm. Soybeans are tracking roughly 1,000 kg/ha above the non-irrigated baseline — and harvest is still ahead.
Even under imperfect conditions, irrigated production delivered a significant advantage. The potential, once operations are running smoothly, is clear.
What comes next
The winter months will be used to improve equipment efficiency and prepare the irrigated fields properly. Priority actions include deep tillage, liming, and rehabilitation of the pivot tracks — measures that will set a stronger foundation for the coming season.
This first campaign was a learning curve. The next one will be better prepared.
