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  Effects of Nitrogen on Seed Production of Barspectra Westerwold Rye-grass

D. Savoie1, A. Smith2 and L. Nason2
(Partner: Killoween Farms Limited)

Abstract: Nitrogen rates of 50, 70, 90, 110 and 130 kg N/ha were applied all at seeding ( Treatment A) and in a split application (Treatment B, 50 kg N/ha at seeding and the remaining at the 3-leaf stage) on Barspectra Westerwold rye-grass at Killoween (Carleton county). Seed yield increased with nitrogen rates up to 90 kg N/ha for both treatment A and B. The seed yield was low (220- 321 kg/ha) due to delayed seeding, excessive vegetative growth specific to the cultivar and/or other parameter. Seed germination was reduced as nitrogen fertility increase. Six uncleaned seed samples were sent for an official germination test. All samples would grade Certified number 1 and/or 2 if the non-noxious weed seeds were removed. Most of the non-noxious weeds present could have easily been removed by a commercial seed cleaner.


1Regional Office, NBDARD, Grand Falls, NB E3Z 1G1
2Livestock & Livestock Feed Branch, NBDARD, Fredericton, NB E3B 5H1

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