Lindsay Corporation (LNN), a maker of irrigation equipment and infrastructure products, reported lower-than-expected first-quarter profit.  The company cited lower sales of its key infrastructure product for the disappointing results, with the CEO stating that, "The overall outlook for infrastructure spending remains uncertain with a multi-year US highway bill not expected until sometime in 2011 and global governmental budget constraints." Net income was $4.3 million, or 34 cents a share, versus $6.7 million, or 53 cents a share, in the same period last year.