Determination of Forage Yield and Some Quality Characteristics of Silage Sorghum Genotypes at Different Water Stress Levels

Özet

The study was conducted in order to determine the forage yield and some quality characteristics of silage sorghum genotypes at different water stress levels in the Randomized Complete Block Design arranged in split plots under Konya ecological conditions in 2020. Three irrigation treatments ($I_1$: Full irrigation; $I_2$: 75% of $I_1$; $I_3$: 50% of I1) and 14 silage sorghum genotypes supplied from other countries were used in this study, irrigation subjects formed the main parcels and the genotypes sub-plots. In the study, the lowest and highest values were; 4756 kg $da^{-1}$ ($I_3$)-6757 kg $da^{-1}$ ($I_1$) for green herbage yield; 1149 kg $da^{-1}$ ($I_3$)-2002 kg $da^{-1}$ ($I_1$) for dry matter yield, 8,1 % ($I_1$)-9,6% ($I_2$) for crude protein, 33.3% (I2)- 34.5% (I1) for ADF ratio, 55% ($I_3$)- 58.4% ($I_2$) for NDF ratio and and cellulose ratio was determined as 25.6% ($I_3$)-28.2% ($I_1$) respectively. The genotypes used in the study, in which the efficiency of irrigation water use efficiency increased as water stress increased, the lowest and highest dry matter yields were obtained from genotypes G11 (4214 kg da-1$da^{-1}$ ) and G-4 (6961 kg $da^{-1}$ ), respectively, while a total of 8 genotypes had higher green herbage yield values than the study average