scholarly journals Photosynthate Partitioning in Basal Zones of Tall Fescue Leaf Blades

1991 ◽  
Vol 95 (3) ◽  
pp. 663-668 ◽  
Author(s):  
Guy Allard ◽  
Curtis J. Nelson
Keyword(s):  
Tall Fescue ◽  
Photosynthate Partitioning

scholarly journals 137 Nitrate Assimilation and Carbon-14 Partitioning between Shoots and Roots of Tall Fescue

HortScience ◽  
2000 ◽  
Vol 35 (3) ◽  
pp. 413B-413 ◽  
Author(s):  
W. Michael Sullivan ◽  
Zhongchun Jiang ◽  
Richard J. Hull
Keyword(s):  
Nutrient Solution ◽  
Tall Fescue ◽  
Nitrite Reductase ◽  
Nitrate Reduction ◽  
Reductase Activity ◽  
Nitrate Assimilation ◽  
Organic N ◽  
Fixed Carbon ◽  
Photosynthate Partitioning ◽  
Carbon 14

Efficient use of nitrogen by turfgrasses depends on the ability of roots to absorb and assimilate nitrate. If a larger amount of nitrate is assimilated in the roots than in the shoots and organic N is transported to shoots as needed, nitrogen loss through clipping removal would be reduced. However, the ability of roots to assimilate nitrate depends on carbohydrate supply from the shoots. Our study examined the relationship between nitrate assimilation and photosynthate partitioning between shoots and roots of tall fescue grown in nutrient solution. To alter the pattern of nitrate reduction and photosynthate partitioning, we treated the plants as follows: 1) nutrient solution was aerated and nitrate was supplied to the roots, 2) nutrient solution was not aerated and nitrate was supplied to the roots, 3) nutrient solution was aerated and nitrogen was supplied to the leaves as nitrate, and 4) nutrient solution was aerated, and nitrogen was supplied to the leaves as urea. Photosynthate partitioning was assessed using carbon-14 as a tracer. Nitrate and nitrite reductase activities were determined by in vivo methods. Fortyeight hours after the grass leaves were exposed to carbon-14, >60% of the fixed carbon was translocated to stems and >15% to roots. Foliar application of urea resulted in less export of fixed carbon from leaves and lower leaf nitrite reductase activity than when nitrate was supplied to leaves. Less than 5% of the plant total nitrate reduction was attributed to root based activity. Root aeration decreased root nitrate reductase activity. Our results suggest that root-zone aeration and foliar N application could affect total nitrate assimilation and photosynthate partitioning to roots.

Isolation and identification of plant growth-promoting bacteria associated with tall fescue

2009 ◽  
pp. 211-216 ◽  
Author(s):  
J. Monk ◽  
E. Gerard ◽  
S. Young ◽  
K. Widdup ◽  
M. O'Callaghan
Keyword(s):  
New Zealand ◽  
Plant Growth ◽  
Tall Fescue ◽  
Festuca Arundinacea ◽  
Plant Growth Promoting Bacteria ◽  
Beneficial Bacteria ◽  
Isolation And Identification ◽  
Naturally Occurring ◽  
Plant Growth Promoting ◽  
Growth Promoting

Tall fescue (Festuca arundinacea) is a useful alternative to ryegrass in New Zealand pasture but it is slow to establish. Naturally occurring beneficial bacteria in the rhizosphere can improve plant growth and health through a variety of direct and indirect mechanisms. Keywords: rhizosphere, endorhiza, auxin, siderophore, P-solubilisation

THE PERFORMANCE OF S170 TALL FESCUE IN CANTERBURY

1974 ◽  
pp. 214-215
Author(s):  
B.R. Watkin
Keyword(s):  
New Zealand ◽  
White Clover ◽  
Tall Fescue ◽  
Trifolium Repens ◽  
Festuca Arundinacea ◽  
Sheep Grazing ◽  
Selection Of

AN Aberystwyth selection of tall fescue (Festuca arundinacea Schreb.), known as S170, was sown with certified New Zealand white clover (Trifolium repens) and re' clover (T. pratense) and compared under sheep grazing with other grass/clover pastures at the Grasslands Division Regional Station at Lincoln (Watkin, 1975) .

A REVIEW OF 10 YEARS' RESEARCH WITH RED CLOVERS UNDER GRAZING IN SOUTHLAND

1989 ◽  
pp. 181-187
Author(s):  
R.J.M. Hay ◽  
D.L. Ryan
Keyword(s):  
Tall Fescue ◽  
Red Clover ◽  
Farming Systems ◽  
Seasonal Growth ◽  
Sheep Grazing ◽  
High Quality ◽  
Late Flowering ◽  
Heavy Weight ◽  
Widespread Acceptance ◽  
Summer Growth

In a series of trials at Grasslands Gore, over 10 years, the late-flowering tetraploid red clover 'Grassland Pawera' was more productive and persistent than other red clover cultivars. The strong summer growth of Pawera meets the need for heavy-weight lamb feed and high quality forage for conservation in intensive sheep farming systems in Southland. Lenient. infrequent defoliation is necessary to maximise DM production and persistence of Pawera. The most compatible of the grasses evaluated was 'Grasslands Roa' tall fescue. However, 'Grasslands Nui' ryegrass will still be the major grass sown with Pawera owing to its widespread acceptance. In ryegrass mixtures, sowing rates of 5-7 kg/ha of red clover were needed to optimise establishment and subsequent yield. Evidence of oestrogenic activity of Pewera to sheep prompted Grasslands Division to select within Pawera for a low formononetin cultivar. Keywords: red clover, Pawera. Hamua, Turoa. G21. G22, G27. oestrogenic activity, Nui ryegrass, Roa tall fescue, Maru phalaris. Southland, sheep grazing, frequency, intensity, quality. seasonal growth

MANAGEMENT OF NEW CULTIVARS FOR DRYLAND

1983 ◽  
pp. 61-73 ◽  
Author(s):  
J.A. Lancashire ◽  
J.L. Brock
Keyword(s):  
Tall Fescue ◽  
Seed Quality ◽  
Technical Information ◽  
Grazing Management ◽  
Grass Species ◽  
Hill Country ◽  
Seasonally Dry ◽  
Prairie Grass ◽  
Management Procedures ◽  
New Cultivars

Some characteristics of seed quality, establishment rates, performance in mixtures and response to grazing management of 5 new pasture plants with potential in dryland are described. On a dry hill country site in the Wairarapa, the contribution of the sown grasses established in separate plots with clovers under rotational grazing was 'Grasslands Wana' cocksfoot 65%; 'Grasslands Maru' phalaris 23%; 'Grasslands Matua' prairie grass 22%; and 'Grasslands Roa' tall fescue 13% after 2 years. The other main grass species was resident perennial ryegrass which established from buried seed (ca. 240 plants/m*) and had a major impact on the establishment and growth of the sown grasses. On a seasonally dry Manawatu flat land soil 3 grazing managementsviz. set stocked all year (S); rotational all year (R); and combination (Cl (set stocked from lambing to drafting and rotational for the remainder of the year) were applied to mixtures of the new cultivars (except that 'Grasslands Apanui' cocksfoot replaced Wana) with ryegrass and white clover stocked at 20 sheep/ha. After 3 years the contribution of the new cultivars was negligible under S and ryegrass was dominant. The R pastures became cocksfoot dominant and Matua (in winter) and chicory (in summer) contributed more than in the S system. The C system produced the most evenly balanced species contribution with only Roa remaining at (5%. A sub-trial with cocksfoot cultivars demonstrated that Wana maintained better production and tiller density ~ll,000/m2 ) than Apanui (1000/m' ) under set stocking IS). Although some of the new cultivars will require specialised management procedures to fulfil their potential in dryland, the increasing and widespread use of Matua prairie grass in farming suggests that these techniques can be adopted in commercial agriculture provided good technical information is available in a management package when the cultivar is released. Keywords: Dryland, grazing management, mixtures, Matua prairie grass, Wana cocksfoot, Roa tall fescue, Maru phalaris, Chicory

Evaluation of Kentucky 31, G1-306, G1-306 and Kenhy Tall Fescue as Pasture for Yearling Steers I. Forage Composition

1979 ◽  
Vol 48 (3) ◽  
pp. 607-617 ◽  
Author(s):  
W. Wade Steen ◽  
Nelson Gay ◽  
J. A. Boling ◽  
Garry Lacefield ◽  
L. P. Bush ◽  
...  
Keyword(s):  
Tall Fescue

Supplemental Feeding of Spring-Calving Cows on Tall Fescue or Tall Fescue-Red Clover Pastures

1983 ◽  
Vol 57 (3) ◽  
pp. 535-541 ◽  
Author(s):  
J. L. Ellis ◽  
R. E. Morrow ◽  
G. B. Garner ◽  
J. A. Stricker ◽  
M. R. Ellersieck
Keyword(s):  
Tall Fescue ◽  
Red Clover ◽  
Supplemental Feeding

Ruminal tryptophan-utilizing bacteria degrade ergovaline from tall fescue seed extract

2017 ◽  
Vol 95 (2) ◽  
pp. 980 ◽  
Author(s):  
B. E. Harlow ◽  
J. P. Goodman ◽  
B. C. Lynn ◽  
M. D. Flythe ◽  
H. Ji ◽  
...  
Keyword(s):  
Tall Fescue ◽  
Seed Extract
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