... onion,tomato,chili and so on,there is also a center hole which diameter is 8mm,5mm depth,can be used to ... and earth cover should be around 10mm,and check it before sowing,check the bolts and see if they ... are loose or gone,does it ok about the sowing regularity and sowing amount,the ... should be no urea or other thing in it.and the return is forbidden when sowing,when you must return back ...