Seeding rate effects on forage productivity and nutritive value of sorghum

In Ethiopia, the use of traditional and improved grain sorghum [Sorghum bicolor (L.) Moench] variety as green forage crop is limited mainly by large stalk thickness low nutritive values. An experiment was conducted to explore if biomass accumulation values could be managed seeding rates. Two dual-purpose varieties (Melkam Chelenko), one local (Masugi) each representing early late maturity groups were sown for 2 yr at three locations in randomized complete block design (RCBD) with replications involving five rates (12.5, 25, 50, 75, 100 kg ha?1). The results showed significant effects year, location, variety, rate, interactions on different variables. These main contributed more less total variation observed Increasing rate significantly decreased thickness, neutral detergent fiber (NDF), acid (ADF), lignin (ADL), but increased in-vitro organic matter digestibility (IVOMD) concentration up 6.6% no effect dry accumulation. Among late-maturing varieties, whereas early-maturing greater crude protein (CP) IVOMD NDF, ADF, ADL concentrations across locations. Thus, increasing above recommended 12.5 ha?1 help improve potential Ethiopia.