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.