You need Carrots, apples and Strawberries to defeat him.
Uptil now we have always had a percentage to defeat him. This time we actually have a score, so it should hopefully work out easier.
The best way to look at this level, instead of just making rows, you need to make them on the grass and line them up so that when one row falls, another row falls after it.
You need to get as many added value as you can on your gathered crops.
Use shovels when ever you can to make better rows, and to line other rows up.
This isn't one of the harder rancid levels though luckily.