2015 Volume 77 Issue 5 Pages 335-345
In this study, we describe the effect on composting process after addition of sodium hydroxide, manure compost, and spent mushroom compost to grass silage, for efficient reduction of the amount of radiocesium in contaminated silage by promoting fermentation. For this, we used 60-L vessels for 10 weeks. The degree of decomposition of grass silage was observed to be more than 60% of that of dry matter, regardless of the additives. Moreover, the differences of decrease in fiber and fatty acid were less between types of additive. Contrarily, pH, ammonium nitrogen, and germination rate differed depending on the additives. Further, during germination, significant growth inhibition was observed without compost addition presumably, because of the high ammonia nitrogen concentration.
