Tidlig såning af sukkerroer
Konklusion
Såning direkte på volde, der var anlagt i efteråret, viste sig mest velegnet til såning langt forud for det optimale tidspunkt for marken. Da metoden generelt gav for lave plantetal – specielt ved senere såning – er metoden dog ikke dyrkningssikker i den afprøvede form.
Efterårspløjning gav de bedste udbytter, når så-tidspunktet var tæt på det optimale tidspunkt for marken, mens dybdeharvning gav de bedste udbytter ved såning efter det optimale tidspunkt.
Der henvises i øvrigt til NBR-rapport 729-2020 for en mere praksisnær sammenligning mellem efterårspløjning og dybdeharvning.
Conclusion
Drilling directly on ridges made in the autumn was most suitable when drilling was performed well in advance of the optimal time for the specific field. Due to dissatisfactory plant emergence – especially when drilling later – this method is not advisable in its tested form.
Autumn drilling resulted in the best yields, when drilling was performed close to the optimal day for the field, whereas deep-harrowing gave the best yields when drilling was delayed beyond the optimal day.
Please confer to NBR-report 729 for a praxis-near comparison of ploughing and deep-harrowing.