Biometric relations between maturity stage and productivity of corn cultivars for silage production

Maity Zopollato, Luiz Gustavo Nussio, F Paziani, Jose Leonardo Ribeiro, Jhones Sarturi, G Mourao

Research output: Contribution to journalArticle

Abstract

This experiment evaluated the plant and stem dry matter (DM) content, plant, stem and grain DM productivity of corn cultivars harvested in different maturity stages. A randomized block design, with a 8 × 6 × 2 factorial scheme, composed of eight harvesting times, six corn cultivars and two evaluation harvests (2001/2002 and 2002/2003) was used. Cultivars CO 32, AG 5011, P 3041, DKB 333B, AG 1051 and Z 8550 were harvested when reaching 50% of male flowering, 15 days after this date and later, every week, totalizing eight harvesting times. Cultivar CO 32 showed the highest plant and stem DM content, and the lowest stem DM production, while cultivar P 3041 achieved the lowest plant and stem DM content. The maturity advance resulted in increased plant DM content, (from 14.5 to 46%), stem DM content (from 16.9 to 28%), plant DM production (from 9.6 to 20.9 t DM/ha) and grain production (from 0 to 9.3 t DM/ha). In the 2001/2002 harvest, the production was initially reduced and then increase
Original languageEnglish
Pages (from-to)256-264
JournalBrazilian Journal of Animal Science
StatePublished - Jul 2007

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