The mat type seedlings are raised with 20-25 mm thick sieved soil layer mixed with farm yard manure or organic manure placed in trays or over polythene sheets. The mat thickness for best results of seedling raising is about 20 mm. The success of rice transplanter depends on the seedlingquality. https://www.banglajol.info/index.php/BRJ/article/view/41834/31229