Client of mine is using text like this:

"The planter has been developed to plant row crops like maize, sunflower, soya beans, est. in a single pass without any prior soil preparation through cultivation."

I have never seen the use of est. like this and have Google and asked two other people. Should this not be etc.?

Like this:

"The planter has been developed to plant row crops like maize, sunflower, soya beans, etc. in a single pass without any prior soil preparation through cultivation."

A client of mine is using text like this:

The planter has been developed to plant row crops like maize, sunflower, soya beans, est. in a single pass without any prior soil preparation through cultivation.

I have never seen "est." used like this before, and have Googled and asked two other people, who agree. 

Should this not be "etc."? Or, in full:

The planter has been developed to plant row crops like maize, sunflower, soya beans, etc. in a single pass without any prior soil preparation through cultivation.