Milky takes a heavy dose: 4 to 5 percent of the wet substrate weight, which is 40 to 50 g of spawn per kilogram of wet straw. Folder and manual agree here.
The folder fills a polythene bag about 15 to 16 inch wide and 20 to 21 inch high with 4 to 5 kg of treated substrate, spreading spawn in layers 3 to 4 inch apart. TNAU uses a 60 by 30 cm bag with five straw layers.

