Goliath crested wheatgrass

2006 ◽  
Vol 86 (3) ◽  
pp. 743-744 ◽  
Author(s):  
Bruce Coulman
Keyword(s):  
Key Words ◽  
Seed Weight ◽  
Dry Matter ◽  
Agropyron Cristatum ◽  
Dry Matter Yield ◽  
Canadian Prairie ◽  
Crested Wheatgrass ◽  
Cultivar Description ◽  
Seed Yields ◽  
Prairie Provinces

Goliath is a colchicine-induced tetraploid cultivar of crested wheatgrass [Agropyron cristatum (L.) Gaertner]. Relative to other cultivars of crested wheatgrass, Goliath is taller, produces fewer, heavier tillers, and has greater seed weight. It produced higher seed yields than other cultivars and had a higher mean forage dry matter yield than the check cultivar in regional trials conducted in the three Canadian prairie provinces. Key words: Crested wheatgrass, Agropyron cristatum (L.) Gaertner, colchicine-induced tetraploid, cultivar description

Azur red clover

2006 ◽  
Vol 86 (3) ◽  
pp. 749-750
Author(s):  
Bruce Coulman
Keyword(s):  
Key Words ◽  
Dry Matter ◽  
Trifolium Pratense ◽  
Growth Habit ◽  
Red Clover ◽  
Dry Matter Yield ◽  
Trifolium Pratense L ◽  
Cultivar Description ◽  
Diploid Cultivar

Azur is a diploid cultivar of red clover [Trifolium pratense (L.)], which was selected for vigor and growth habit in the year of seeding. In forage trials conducted in Québec, Azur was superior in dry matter yield to check cultivars, particularly in trials harvested in the second production year. In trials in Ontario and the Atlantic provinces, Azur was numerically superior in dry matter yield to the check cultivar, but not significantly so (P < 0.05). Key words: Red clover, Trifolium pratense (L.), cultivar description

DRY MATTER YIELD OF NITROGEN FERTILIZED CRESTED WHEATGRASS ON THREE CHERNOZEMS (MOLLISOLS)

1989 ◽  
Vol 69 (3) ◽  
pp. 933-937
Author(s):  
A. L. VAN RYSWYK ◽  
K. BROERSMA ◽  
J. W. HALL ◽  
A. H. BAWTREE
Keyword(s):  
Nitrogen Fertilization ◽  
Dry Matter ◽  
Agropyron Cristatum ◽  
Yield Response ◽  
Dry Matter Yield ◽  
Crested Wheatgrass ◽  
Chernozemic Soil ◽  
Moisture Balance ◽  
History Of

Crested wheatgrass (Agropyron cristatum) on three Chernozemic soil sites was fall fertilized once with 0, 25, 50 and 100 kg N ha−1 and harvested for 7 yr. Yield and yield response of crested wheatgrass to nitrogen were greater on the two moister sites and in the second and third (wettest) years. Low yield response on the driest site was likely due to a history of drought and phosphorus deficiency.Key words: Dry matter yield, crested wheatgrass, Agropyron cristatum, Chenozems, nitrogen fertilization, climatic moisture balance.

scholarly journals GENETIC CONTROL OF VARIATION IN A SELECTED POPULATION OF RUSSIAN WILD RYEGRASS (ELYMUS JUNCEUS)

1976 ◽  
Vol 56 (2) ◽  
pp. 275-280
Author(s):  
T. LAWRENCE
Keyword(s):  
Genetic Control ◽  
Seed Yield ◽  
Seed Weight ◽  
Dry Matter ◽  
Recurrent Selection ◽  
Direct Selection ◽  
Adult Plant ◽  
Dry Matter Yield ◽  
Seedling Characters ◽  
Additive Control

Progenies from a five-genotype diallel cross in Russian wild ryegrass, Elymus junceus Fisch., were studied to assess the pattern of genetic control for F1 seed weight and a number of seedling and adult plant characters. Variation in F1 seed weight was largely determined by the maternal parent, but some control by the pollen parent was apparent. Of the seedling characters, days to emerge, rate of leaf appearance, rate of tiller appearance, and seedling dry matter yield, only days to emerge showed additive variance which is amenable to direct selection. The other three characters could be most easily exploited by a recurrent selection program. The adult plant characters, date of inflorescence appearance, P content of the forage, and organic matter digestibility indicated strong additive control which is amenable to direct selection. Dry matter yield and seed yield also showed strong additive control which was accompanied by specific combining ability and weak maternal effects suggesting good progress should be possible by direct selection methods but crossing the selections in a diallel fashion prior to formation of synthetics might be desirable. The seedling characters, rate of leaf and tiller appearance and seedling dry matter yield were interrelated and associated with adult plant yield, thus offering the possibility of screening seedlings for these characters in a recurrent selection program for improved forage or seed yield.

EVALUATION OF TIMOTHY CULTIVARS FOR VOLUNTARY INTAKE AND NUTRIENT COMPONENTS

1988 ◽  
Vol 68 (4) ◽  
pp. 1121-1129 ◽  
Author(s):  
W. N. MASON ◽  
P. M. FLIPOT
Keyword(s):  
Key Words ◽  
Dry Matter ◽  
Phleum Pratense ◽  
Dry Matter Intake ◽  
Dry Matter Yield ◽  
Dry Matter Digestibility ◽  
Flower Stage ◽  
Voluntary Intake ◽  
Phleum Pratense L

Five timothy (Phleum pratense L.) cultivars, Clair, Champ, Milton, Climax and Bounty, were harvested at first flower stage during 2 consecutive years and in the regrowth for 1 yr. The forages were each offered as hay to 15 young rams to evaluate voluntary intake. Five animals were used to determine initial harvest dry matter digestibility. The cultivars varied significantly in voluntary intake at first flower stage. The highest intake (g kg−0.75 d−1) averaged for the years was obtained in the early cultivar Champ (65.9), which was 10% more than that of the medium-late cultivar Climax. The cultivars did not differ significantly in dry matter digestibility. In the regrowth, the relative intakes of the cultivars were essentially reversed from that of the initial harvest. The voluntary intake was substantially higher but the differences among forages were less marked. Climax regrowth voluntary intake was higher (P < 0.05) than all cultivars, except Bounty. A 15% range in digestible dry matter intake was present among cultivars. The ranking of the culivars for digestible dry matter was different than for dry matter yield. Key words: Timothy, Phleum pratense L., voluntary intake, dry matter digestibility

The Effect of Frequency of Defoliation on the Productivity of Selected Forage Legumes (Stylosanthes hamata, Stylosanthes capitataand Centrosema pascuorum) in the Sub-humid Zone of Nigeria

1995 ◽  
Vol 31 (1) ◽  
pp. 13-19 ◽  
Author(s):  
G. Tarawali ◽  
M. A. Mohamed-Saleem ◽  
P. C. Chionuma
Keyword(s):  
Dry Matter ◽  
Nutritive Value ◽  
Growing Season ◽  
Legume Species ◽  
Dry Matter Yield ◽  
Forage Legumes ◽  
Humid Zone ◽  
Stylosanthes Hamata ◽  
Seed Yields

SummaryThe dry matter yield, nutritive value and persistence of three legume species (Stylosanthes hamata Taub., S. capitata Vog. and Centrosema pascuorum Mart. ex. Benth.) cut at different frequencies during the growing season or only once at the end of the growing season were compared. The shorter cutting intervals enhanced regrowth, but very frequent cutting reduced total dry matter and seed yields. A defoliation interval of three to six weeks is recommended. Generally, S. hamata gave the best performance.Efecto del deshoje en tres legumbres

Desiccation of alfalfa for seed production with diquat and glufosinate

1996 ◽  
Vol 76 (3) ◽  
pp. 435-439 ◽  
Author(s):  
J. R. Moyer ◽  
S. N. Acharya ◽  
J. Fraser ◽  
K. W. Richards ◽  
N. Foroud
Keyword(s):  
Key Words ◽  
Seed Production ◽  
Seed Yield ◽  
Seed Weight ◽  
Viable Seed ◽  
Hard Seed ◽  
Alfalfa Seed ◽  
Percent Germination ◽  
Medicago Sativa L ◽  
Seed Yields

Recommendations for desiccation of alfalfa do not clearly define the stage at which desiccants should be applied. To obtain this information, diquat and glufosinate were applied to alfalfa (Medicago sativa L) from 1991 to 1994 at various stages of maturity to determine the effect of desiccant and stage of maturity at desiccation on seed yield 1000-seed weight and seed germinability. Alfalfa seed yields, 1000-seed weights, percent germination and percent viable seed were similar after desiccation with diquat and glufosinate. Desiccation when 60–75% of the alfalfa seed pods were brown permitted maximum seed yields. Percent germination increased slightly in seeds that were exposed to weathering under normal conditions until all pods turned brown. Both desiccants adequately desiccated alfalfa for harvesting but desiccation with glufosinate took 2 or 3 d longer than diquat. Desiccants did not reduce alfalfa growth in the spring after application. Key words: Germination, yield, hard seed, seed weight, stage

Irrigation and Nitrogen Studies in s. 23 Ryegrass Grown for Seed: 1. Growth, Development, Seed Yield Components and Seed Yield

1977 ◽  
Vol 88 (3) ◽  
pp. 605-614 ◽  
Author(s):  
P. D. Hebblethwaite
Keyword(s):  
Seed Yield ◽  
Yield Components ◽  
Seed Weight ◽  
Dry Matter ◽  
Field Experiments ◽  
Unit Area ◽  
Yield Response ◽  
Seed Yield Components ◽  
Seed Yields ◽  
Number Of Seeds

SUMMARYThe effects of irrigation and nitrogen on S. 23 perennial ryegrass grown for seed were investigated in a series of field experiments from 1972 to 1974. Irrigation significantly increased seed yield by 16% in 1972 and 52% in 1974 but had no effect in the wet year of 1973. In 1972 maximum deficit reached 110 mm at the end of July and coincided with anthesis. Consequently the yield response was due to an increase in number of seeds per unit area and no other seed yield component was affected. In 1974 peak deficit also reached about 100 mm but started to build up rapidly very early in the season and had reached 80 mm by the time that the first ears emerged. Consequently the yield response was due to increases in number of fertile tillers, number of seeds per unit area and 1000-seed weight.Irrigation had no significant effect on number of florets or seeds, except in 1974 when percentage of florets which produced seed was increased by 2%.Irrigation had some effect on threshed straw yields, total dry matter, harvest index and total number of tillers but where this occurred the response was much smaller than that of seed yield which indicates that irrigation had greater effects on the reproductive development of the crop than on yield of dry matter and tillering patterns. Increasing the quantity of nitrogen from 0 to 80 kg/ha increased seed yields, all seed yield components except 1000-seed weight, threshed straw yields and total dry matter and number of tillers at most sampling dates. Increasing the quantity of nitrogen from 80 to 160 kg/ha had little further effect on the above components except in 1972 where seed yields were significantly decreased.In 1972 number of florets was increased and percentage of florets which produced seed decreased with increasing quantities of nitrogen.

AC Oxley II cicer milkvetch

2001 ◽  
Vol 81 (4) ◽  
pp. 749-751
Author(s):  
S. N. Acharya
Keyword(s):  
Key Words ◽  
Dry Matter ◽  
Research Centre ◽  
Western Canada ◽  
Seedling Vigour ◽  
Cultivar Description ◽  
Astragalus Cicer

AC Oxley II cicer milkvetch (Astragalus cicer L.) was developed by the Agriculture and Agri-Food Canada Research Centre, Lethbridge, Alberta. This synthetic cultivar developed for improved seedling vigour and tested as LRC95-93-1 in Western Forage Tests established in 1996 outyielded Oxley, the check cultivar, by 19%. In western Canada, under dryland conditions AC Oxley II produced 23% more dry matter than the Oxley check, while under irrigation the yield advantage was 11%. AC Oxley II is well suited for pasture and hay production in western Canada. The new cultivar produced about 10 percent more seed than Oxley at Lethbridge under irrigated conditions. Key words: Cultivar description, cicer milkvetch, Astragalus cicer L., seedling vigour

AC Kings barley

2001 ◽  
Vol 81 (3) ◽  
pp. 427-429
Author(s):  
T. M. Choo ◽  
S. ter Beek ◽  
R. A. Martin ◽  
K. M. Ho ◽  
C. D. Caldwell ◽  
...  
Keyword(s):  
Hordeum Vulgare ◽  
Key Words ◽  
Seed Weight ◽  
High Yield ◽  
Hordeum Vulgare L ◽  
Eastern Canada ◽  
Lodging Resistance ◽  
Barley Breeding ◽  
Key Words Barley ◽  
Cultivar Description

AC Kings is a two-row, spring feed barley (Hordeum vulgare L.) cultivar developed by the Eastern Canada Barley Breeding Group, Agriculture an d Agri-Food Canada. It has high yield, excellent seed weight, and lodging resistance. AC Kings performs well in Ontario and in the Maritime Region of Canada. Key words: Barley, Hordeum vulgare L., cultivar description, high yield, high seed weight

Seed weight, emergence and seedling vigour of four tetraploid crested wheatgrass populations

2003 ◽  
Vol 83 (1) ◽  
pp. 69-70 ◽  
Author(s):  
A. Mellish and B. Coulman
Keyword(s):  
Key Words ◽  
Seed Size ◽  
Seed Weight ◽  
Seedling Emergence ◽  
Seedling Vigour ◽  
Crested Wheatgrass

This study compared the seed weight, and seedling emergence vigor of four tetraploid crested wheatgrass populations. S9240H, a population selected for seed size, had larger seeds than the cultivars Kirk and CD-II. Heavy seeds had greater emergence and heavier seedlings than light seeds, but there were no differences in these characters among the four populations. Key words: Crested wheatgrass, seed size, seedling vigour

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