Browsing by Author "Coulman, B."
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Item The effects of crop residue removal and nitrogen fertilization on meadow bromegrass (Bromus riparius Rehm.) seed(1998-02-19) Loeppky, H.; Coulman, B.Item The history of forage cultivar testing in Saskatchewan(2016-03-15) Jefferson, P.; Coulman, B.Item Induction of flowering and seed production in ecotypes of Festuca hallii(2011-03-15) Palit, R.; Bai, Y.; St.-Pierre, R.; Romo, J.; Coulman, B.Item Influence of balanced application of N, P and S fertilizers on forage yield and quality of timothy in northeastern Saskatchewan(2008-02-28) Malhi, S.S.; Coulman, B.; Leach, D.Item Morphological analysis of S9240 tetraploid crested wheatgrass (Agropyron cristatum)(2000-02-22) Mellish, A.; Coulman, B.S9240 crested wheatgrass was produced by colchicine-doubling the chromosome number of diploid A. cristatum cv. Parkway, followed by several cycles of selection for height, seed size, floret fertility, and forage yield. Some inclusion of tetraploid A. cristatum cv. Kirk germplasm occurred during the selection cycles. The goal of this study was compare S9240 with other crested wheatgrass cultivars in seed size, height, crown width, tiller number, tiller weight, and ability to emerge from deep seedings. The seed weight of S9240 was significantly (p<0.05) heavier than other tested crested wheatgrass cultivars. In seedings in greenhouse soil flats at a 7.5 cm depth, S9240 showed higher emergence and larger seedlings. S9240 was significantly (p<0.05) taller than other crested wheats in both spaced-plantings and solid swards, and had narrower crowns and fewer, heavier tillers. From the results of the present study, and associated yield trials, S9240 shows potential as a productive hay-type cultivar of crested wheatgrass that can emerge from deeper seedings.Item The potential of Lolium ryegrasses as seed and forage crops in western Canada(1998-02-19) Coulman, B.; Loeppky, H.There has been increasing interest by Canadian and international seed companies in contracting production of Lolium ryegrasses in western Canada. There is a lack of information on best management practices for the production of seed of these species and little is known about the performance of the many available cultivars under the conditions of western Canada. Thus, experiments were carried out in 1996 and 1997 at Outlook, SK (sandy-loam soil, irrigated) and Melfort, SK (clay-loam soil, non-irrigated). The ryegrass types tested include: 1) Westerwold, an annual; 2) Italian, a possible biennial; and 3) Perennial, a biennial or short-lived perennial. The first two types are both Lolium multiflorum; the difference being that Westerwold produces heads in the year of seeding, while Italian requires vernalization (exposure to winter temperatures) to produce heads. Thus, Italian must survive our winters to be able to produce a seed crop. Perennial ryegrass (Lolium perenne) also requires vernalization to produce heads, so winter hardiness is also a key issue with this type.Item Promising native forage options for semi-arid prairies of western Canada(2016-03-15) Khanal, N.; Schellenberg, M.P.; Biligetu, B.; Coulman, B.E.There is growing interest in native plant species for their use as forage, pasture, energy crop, and as land reclamation and revegetation materials. This article reports the results of population improvement work on northern wheatgrass (NWG), purple prairie clover (PPC), white prairie clover (WPC) and plains rough fescue (PRF) carried out at Swift Current Research and Development Centre - Agriculture and Agri-Food Canada. Substantial selection differential were achieved in all species in terms of growth vigour, plant health, biomass and seed yield in all species. This suggests ample scope for selection gain for the desirable traits. Seed shattering is one of the challenges facing the domestication and commercialization of these native plant species.Item Short rotation forage legumes provide N fertility for wheat and canola crops(2014-03-11) Jefferson, P.; Schoenau, J.J.; Coulman, B.; Nybo, B.; Foster, A.; Larson, K.; Vera, C.Item Stockpiled cicer milkvetch and brome forage quality(2015-03-16) Jefferson, P.G.; Acharya, S.; Coulman, B.Item A summary of forage variety performance in Saskatchewan (1992-1996)(1997-02-20) Pastl, R.; Coulman, B.