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Publication Date
1977
Description
Late summer seeding of alfalfa resulted in higher yields than did spring seeding only for the first year after seeding. Yields of late summer seeded plots progressively decreased through the third year after seeding, but yield of spring seeded plots remained constant. In the third year, there were 14 % more plants/m2 in spring seeded plots than in late summer seeded plots, but stems/m2 remained constant for both seeding dates. In second and third years, broadcast seeding resulted in greater yields and more plants and stems/m2 than row seeding. Over the three-year period highest yields were obtained when plants and stems/m2 were highest, when yield/plant was lowest, and when plants produced fewer but heavier tillers. In this study, seeding alfalfa at a rate of 18 kg/ha produced sufficient plants for maximum yield the second and third years after seeding for both late summer and spring seedings.
Citation
Mullen, R E.; Vorst, J J.; Laborde, H E.; and Rhykerd, C L., "Yield and stand dynamics of Medicago sativa as influenced by seeding management" (1977). IGC Proceedings (1977-2023). 28.
(URL: https://uknowledge.uky.edu/igc/1977/sess6/28)
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Yield and stand dynamics of Medicago sativa as influenced by seeding management
Late summer seeding of alfalfa resulted in higher yields than did spring seeding only for the first year after seeding. Yields of late summer seeded plots progressively decreased through the third year after seeding, but yield of spring seeded plots remained constant. In the third year, there were 14 % more plants/m2 in spring seeded plots than in late summer seeded plots, but stems/m2 remained constant for both seeding dates. In second and third years, broadcast seeding resulted in greater yields and more plants and stems/m2 than row seeding. Over the three-year period highest yields were obtained when plants and stems/m2 were highest, when yield/plant was lowest, and when plants produced fewer but heavier tillers. In this study, seeding alfalfa at a rate of 18 kg/ha produced sufficient plants for maximum yield the second and third years after seeding for both late summer and spring seedings.
