I have a "Marvin" harrow cart somewhere along the Sacramento Delta. Great for seedbeds also, center section folds forward and wings fold/swing to the rear for transport. I wish to say its a 30' model. Not meant for breaking up clods the size of bowling balls.
Raisins? Neil should ask the Boyajian Boys aka Dinuba Duo what the story is about the size. I believe they are Sun Maid growers. They boasted to me today about their plentiful water source this morning. Nowadays, less is more...JM
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