Effects of leonardite applications on yield and quality of some sorghum sudanese hybrids (Sorghum bicolor (L.) Moench x Sorghum sudanense (piper) Stapf) and Silage maize (Zea mays) varieties

The study was carried out to determine differences of yield an some quality characteristics in Uzunköprü–Edirne on sorghum–sudangrass (Sorghum bicolorL.) Moench x Sorghum sudanense (Piper) Stapf) and maize at different doses of leonardit in 2013. 3 commercial maize varieties (Mai Sadour-Calsio, Pioneer-31Y43, Genta-Samuray31) and 2 commercial sorghum–sudangrass varieties (Alfa Seed-Nutr Honey, Ulusoy Seed-Green Go) was used as experiment material. Plant height, leaf number/plant, fresh forageyield, hay yield, dry matter ratio, leave ratio, sibling number, crude protein ratio, crude protein yield and crude fibre ratio was determined. As a conclusion; plant height (136.9-158.8 cm), leaf number/plant (7.63-9.20pcs/plant), fresh forage yield (4939.1-6653.3 kg/da), hay yield (1264.6-1778.0 kg/da), crude protein yield (88.08-171.24 kg/da) has highest value on 16 kg/da leonardit dose , dry matter ratio(% 23.07), crude protein ratio(% 12.30) has highest value on 12 kg/da leonardit dose and sibling number (4.27 pcs/plant) has highest value on 20 kg/da leonardit dose was determined on increasing leonardit applications.