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Authors Glover, DE; Kielly, GA; Jefferson, PG; Cohen, RDH
Author Full Name Glover, DE; Kielly, GA; Jefferson, PG; Cohen, RDH
Title Agronomic characteristics and nutritive value of 11 grasses grown with irrigation on a saline soil in southwestern Saskatchewan
Source CANADIAN JOURNAL OF PLANT SCIENCE
Language English
Document Type Article
Author Keywords grasses; salinity; yield; persistence; nutritive value; intake; digestibility
Keywords Plus ALTAI WILD RYEGRASS; CRESTED WHEATGRASS; VOLUNTARY INTAKE; CHEMICAL-COMPOSITION; VITRO DIGESTIBILITY; FORAGE QUALITY; BEEF-CATTLE; NITROGEN; PASTURE; SHEEP
Abstract Agronomic and nutritive characteristics of I I grasses were studied at Swift Current, Saskatchewan on a moderately saline irrigated soil: [smooth bromegrass (Bromus inermis Leyss.), meadow bromegrass (Bromus riparius Rehmann), tall wheatgrass (Elytrigia elongata (Host) Nevski), crested wheatgrass (Agropyron desertorum (Fisch. ex Link) Schult.), intermediate wheatgrass (Elytrigia intermedia (Host) Nevski), slender wheatgrass (Elymus trachycaulus (Linke) Gould ex Shinners), Altai wild ryegrass (Leymus angustus (Trin. Pilger), Russian wild ryegrass (Psathyrostachys junceus (Fisch.) Nevski), Dahurian wild ryegrass (Elymus dahuricus Turcz ex Grieseb), reed canarygrass (Phalaris arudinaceae L.) and creeping foxtail (Alopecurus arundinaceus Poir.)]. Grasses were clipped at three-leaf, heading and seed set. Yield, leaf-to-stem ratio (LSR), botanical composition (BC), crude protein (CP), phosphorus, fibre and in vitro dry matter digestibility (IVDMD) were determined. There were differences (P < 0.05) between the grasses in yield at each growth stage with smooth bromegrass and creeping foxtail having high yields and meadow bromegrass low yields at all growth stages. The BC of most target grasses was greater than 60%. Exceptions were Dahurian wild ryegrass, crested wheatgrass, tall wheatgrass and meadow bromegrass. There were few significant differences between the grasses for LSR, except that Russian and Altai wild ryegrasses and meadow bromegrass had higher LSR (P < 0.05) than the other grasses. Differences in CP, P, neutral (NDF) and acid (ADF) detergent fibres were inconsistent and small at each growth stage but CP and P declined (P < 0.05) while NDF and ADF increased (P < 0.05) with plant maturation. There were differences (P < 0.05) between years and cuts for all traits except between years for yield, BC and LSR at seed set (P > 0.05). Dry matter intake (DMI) NDF and in vivo dry matter digestibility (DMD) were determined for hay cut from each plot using sheep. The relationship between forage NDF and DMI: DMI (-1)(g kg BW) (d) (-1) = 86.5 - 0.09 NDF (r(2) = 0. 87; RSD = 1.16; P < 0.001)] was used to calculate predicted DMI (PDMI) for all clipped samples. Hay lVDMD differed from DMD (P < 0.05) and the regression DMD = 1.27 lVDMD - 5.75 (r(2) = 0.89; RSD = 3.21; P < 0.001) was used to adjust lVDMD to predicted in vivo digestibility estimates (PDMD). PDMD differed (P < 0.05) between the grasses only at heading and seed set. Yield of PDDM (YPDDM), yield of CP (YCP) and the sum of these and PDMI were used to rank the grasses for usefulness as hay or pasture for early or late grazing.
Author Address Univ Saskatchewan, Dept Anim & Poultry Sci, Saskatoon, SK S7N 5A8, Canada; Agr & Agri Food Canada, Saskatoon, SK S9H 3X2, Canada
Reprint Address Cohen, RDH (reprint author), Univ Saskatchewan, Dept Anim & Poultry Sci, 51 Campus Dr, Saskatoon, SK S7N 5A8, Canada.
E-mail Address rccohen@telus.net
Times Cited 4
Total Times Cited Count (WoS, BCI, and CSCD) 4
Publisher CANADIAN SCIENCE PUBLISHING, NRC RESEARCH PRESS
Publisher City OTTAWA
Publisher Address 65 AURIGA DR, SUITE 203, OTTAWA, ON K2E 7W6, CANADA
ISSN 0008-4220
29-Character Source Abbreviation CAN J PLANT SCI
ISO Source Abbreviation Can. J. Plant Sci.
Publication Date OCT
Year Published 2004
Volume 84
Issue 4
Beginning Page 1037
Ending Page 1050
Digital Object Identifier (DOI) 10.4141/P03-073
Page Count 14
Web of Science Category Agronomy; Plant Sciences
Subject Category Agriculture; Plant Sciences
Document Delivery Number 879OL
Unique Article Identifier WOS:000225727000011
Plants associated with this reference

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