Publication Date
1993
Description
In a field experiment, an early• and a late-maturing cultivar of perennial ryegrass were cut during the primary growth in 6-weekly intervals starting when the early cultivar (Lolium perenne L.) reached stage of growth 31 (Simon & Park 1983, Proceedings XIV IGC), at 2 levels of nitrogen fertilisation. Dry mailer yield (DMY) in the regrowth was determined 4 weeks after defoliation in the primary growth. DMY in the regrowth decreased with delayed cutting in the primary growth. No significant correlation existed between the content of water soluble carbohydrates (WSC) in 1he stubble at the time of defoliation in the primary growth, nnd regrowth. Differences in the regrowlh DMY could be attributed primarily to differences in the number of fertile tillers. The late-maturing cultivar achieved higher regrowth DMY and responded more favourably to increased nitrogen fertilisation than the early-maturing cultivar.
Citation
Pohlmann, W and Simon, U, "Effects of Cutting Dates in Primary Growth, Water Soluble Carbohydrate Content and Nitrogen Fertilization on Regrowth of Perennial Ryegrass" (2024). IGC Proceedings (1993-2023). 7.
https://uknowledge.uky.edu/igc/1993/session8/7
Included in
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Effects of Cutting Dates in Primary Growth, Water Soluble Carbohydrate Content and Nitrogen Fertilization on Regrowth of Perennial Ryegrass
In a field experiment, an early• and a late-maturing cultivar of perennial ryegrass were cut during the primary growth in 6-weekly intervals starting when the early cultivar (Lolium perenne L.) reached stage of growth 31 (Simon & Park 1983, Proceedings XIV IGC), at 2 levels of nitrogen fertilisation. Dry mailer yield (DMY) in the regrowth was determined 4 weeks after defoliation in the primary growth. DMY in the regrowth decreased with delayed cutting in the primary growth. No significant correlation existed between the content of water soluble carbohydrates (WSC) in 1he stubble at the time of defoliation in the primary growth, nnd regrowth. Differences in the regrowlh DMY could be attributed primarily to differences in the number of fertile tillers. The late-maturing cultivar achieved higher regrowth DMY and responded more favourably to increased nitrogen fertilisation than the early-maturing cultivar.
