Biblio
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“The relationship between applied nitrogen, nitrogen concentration in herbage, and seed yield in perennial ryegrass (Lolium perenne L.). II. Cultivars in Oregon”, J. Appl. Seed Prod, vol. 16, pp. 115–124, 1998.
, “Vegetative plant development and seed production in cool-season perennial grasses”, Seed Science Research, vol. 8, pp. 295–301, 1998.
, “Convergent-Divergent Selection for Seed Production and Forage Traits in Orchardgrass: II. Seed Yield Response in Oregon”, Crop science, vol. 37, pp. 1054–1059, 1997.
, “Spring Nitrogen Fertilization of Perennial Ryegrass Seed Crop”, Journal of Production Agriculture, vol. 10, pp. 327-330, 1997.
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