PRODUCTION OF SIX SORGHUM-SUDANGRASS HYBRIDS SUBMITTED TO THREE CUTS AND TWO PLANTING SEASONS

Abstract

Four experimental hybrids and two commercial hybrids of Sorghum bicolor cv bicolor X Sorghum bicolor cv sudanense were evaluated regarding their agronomical characteristics: green matter GM), dry matter (DM), digestible dry matter (DDM) production, plant height and number of plants per hectare. The hybrids were submitted to three successive cuts, accomplished at two different planting times. A randomized blocks design was used and means were compared using SNK test (p<0.05). The ATF53 x CMSXS 912 showed higher average values of GM, DM and DDM productions than other hybrids at the two planting seasons, but did not differ from control AG2501-C. Average values in the second planting time were higher than in the first regarding GM and DM production and plant height, pointing to a tendency of higher production at the second time.

Keywords

• agronomic characteristics
• forage
• grazing
• digestibility
• sorghum bicolor