"Canola" there's no such thing as canola. Well, there is, but after kiling a bunch a people AGCanada changed the name. It's a made up word for rapeseed by AgCanada (CAN=canada, ola=oil) Looks like mustard to me, not rapeseed. If you're going to spam keywords, why not add, blue, yellow, green, money, wavy, plain, plane, insect, insects, weevils, heavenly, sirene, snake, agriculture, bituminous, sandy, agregate, agate, etc, etc.
I think it was just fine the way it is. A very nice picture. Why it didn't click? Look at the top 50 at shutterstock, there's a couple just like it.