Talk:Strawberry/@comment-99.227.230.90-20100908213609/@comment-2233593-20101002045817

to achieve level 1, you must collect 500 mastery points (250 crops if you're using bushels). to achieve level 2, you must collect an additional 1,000 (for a total of 1,500) to achieve level 3, you mush collect an additional 3,750 (for a grand total of 5,250)

See the crop mastery article at    http://farmville.wikia.com/wiki/Crop_Mastery for more information.