Effect of pit and plastic bag methods and some additives on chemical composition of grass-legume mixture silages

This study was conducted at the College of Agricultural Engineering Sciences, experimental field University Sulaimani, during growing season 2012 – 2013. The experiment used two methods making silage (pit method and plastic/ bag method) by 18 pits with 100×80×100 cm, plasticbags sized 22 litter. Each silos contained three different forage types: grasses include whole barley oat; alfalfa as legume mixture. Those material were treated additives sugar molasses;solutions a rate 1:10; to improve preservation.The factorial design complete randomized block (CRBD) replications analysis this study.Themostimportantresults indicatedthat highest carbohydrates, ash, crude fat, fiber moisture contents 15.299, 8.580, 2.966, 18.399, 70.536 % respectively, achieved using plastic bags method. result showed that carbohydrate content 16.623% methodwith grasses. However, protein 22.037% plant mixture sugar. pH value 5.527 recorded interaction among pits, mixture, molasses. dry matter 36.65% plastic, sugar.The maximum carbohydrates 15.693% grasses, while legumes gave matter. From results study, it can be concluded significant than method, (grasses legumes) withmolasses produced fiber, moisture, contents.