scholarly journals Seedling Performance Associated with Live or Herbicide Treated Tall Fescue

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Jonathan J. Halvorson ◽  
David P. Belesky ◽  
Harry W. Godwin

Tall fescue is an important forage grass which can host systemic fungal endophytes. The association of host grass and endophyte is known to influence herbivore behavior and host plant competition for resources. Establishing legumes into existing tall fescue sods is a desirable means to acquire nitrogen and enhance the nutritive value of forage for livestock production. Competition from existing tall fescue typically must be controlled to ensure interseeding success. We used a soil-on-agar method to determine if soil from intact, living (L), or an herbicide killed (K) tall fescue sward influenced germination and seedling growth of three cultivars of tall fescue (E+, MaxQ, and E−) or legumes (alfalfa, red clover, and white clover). After 30 days, seedlings were larger and present in greater numbers when grown in L soil rather than K soil. Root growth of legumes (especially white clover) and tall fescue (especially MaxQ) were not as vigorous in K soil as L soil. While shoot biomass was similar for all cultivars of tall fescue in L soil, MaxQ produced less herbage when grown in K soil. Our data suggest establishing legumes or fescue cultivars may not be improved by first killing the existing fescue sod and seedling performance can exhibit significant interseasonal variation, related only to soil conditions.

2014 ◽  
Vol 70 (3) ◽  
pp. 465-473 ◽  
Author(s):  
S. Dirihan ◽  
M. L. Helander ◽  
I. Saloniemi ◽  
P. E. Gundel ◽  
K. Saikkonen

Author(s):  
M.H. Van Rossum ◽  
R.H. Bryant ◽  
G.R. Edwards

Herbage dry matter (DM) production, botanical composition and nutritive value of pastures were measured in response to the application of 24 g/ ha gibberellic acid (GA; 60 g ProGibb®/ha) and 50 kg N/ha nitrogen fertiliser (N; 106 kg urea/ha) in autumn. Responses were compared for simple two species grass (perennial ryegrass or tall fescue)-white clover pastures and multi-species pastures where herbs (chicory and plantain), legumes (red clover and lucerne) and prairie grass were sown with the simple mixtures. Four weeks after application, the increase in DM yield averaged across pasture mixtures relative to untreated plots was 273, 104, and 493 kg DM/ha for GA alone, N fertiliser alone, and GA and N combined, respectively. Application of GA increased the white clover percentage in all pastures except simple tall fescue pastures. The percentage of herbs in multispecies pastures was increased by application of N but not GA. Crude protein concentration was decreased by GA application in all pastures except simple ryegrass pastures. The results from this study show that it is important to consider the botanical composition of pastures when determining the effect of GA on DM yield and nutritive value. Keywords: crude protein, Cichorium intybus, Festuca arundinacea, gibberellins, Lolium perenne, Plantago lanceolata, nutritive value


Author(s):  
F. Nobilly ◽  
R.H. Bryant ◽  
B.A. Mckenzie ◽  
G.R. Edwards

Herbage dry matter (DM) production, botanical composition and nutritive value were compared over 2 years under irrigation and dairy cow grazing for simple two-species grass (perennial ryegrass or tall fescue)- white clover pastures and diverse pastures where herbs (chicory and plantain), legumes (red clover and lucerne) and prairie grass were added to the simple mixtures. Averaged over 2 years, annual herbage DM production was 1.62 t DM/ha greater in diverse (16.77 t DM/ ha) than simple (15.15 t DM/ha) pastures, primarily reflecting greater DM production in summer. Diverse pastures had lower metabolisable energy (ME) (12.0 vs 12.2 MJ ME/kg DM) and neutral detergent fibre (301 vs 368 g/kg DM) content than simple pastures, although the total ME produced per year was greater in diverse than simple pastures (202 vs 185 GJ ME/ha). Ryegrassbased pastures had higher annual DM production than tall fescue-based pastures in the first but not second year. The results indicate that including additional legumes and herbs with simple grass-white clover pastures may increase total DM and ME production of dairy pastures under irrigation. Keywords: Lolium perenne L., Festuca arundinacea, herbs, legumes, pasture mixtures, diversity, nutritive value


2015 ◽  
Vol 77 ◽  
pp. 89-94 ◽  
Author(s):  
L.M. Cranston ◽  
P.R. Kenyon ◽  
S.T. Morris ◽  
P.D. Kemp

Many farmers are sowing mixed swards containing chicory (Cichorium intybus), plantain (Plantago lanceolata), red clover (Trifolium pratense) and white clover (T. repens) (hereafter termed herb and clover mix). This herb and clover mix has comparable annual dry matter (DM) production to perennial ryegrass white clover pasture (rye/wc), however, it has a different pattern of growth, producing more DM during summer and autumn. The herb and clover mix also has a higher nutritive value and is able to support greater rates of animal production, especially over summer, than rye/ wc in both sheep and cattle. The herb and clover mix is most suited to a rotational grazing interval of 3-4 weeks to an 8 cm residual height, with no winter grazing. When managed appropriately the herb and clover mix is able to persist for at least 2 years and up to 5 years under both sheep and cattle grazing. Keywords: Cichorium intybus, Plantago lanceolata, Trifolium pratense, Trifolium repens, legume, perennial, nutritive value.


2020 ◽  
Vol 13 (5) ◽  
pp. 554-562
Author(s):  
Eamon Haughey ◽  
Jennifer C McElwain ◽  
John A Finn

Abstract Aims Research on the effects of extreme rainfall events on ecosystem function has primarily focussed on drought or flooding events, which usually include changes to mean or total rainfall, annually or over a season. However, less is known about the effects of increased rainfall variability without change to mean or total amounts. We investigated the effects of increased variation of water supply on shoot and root biomass as well as the distribution of root biomass of four grassland plant species, grown in monoculture and mixture communities. Methods Perennial ryegrass (Lolium perenne L., shallow-rooting grass), chicory (Cichorium intybus L., deep-rooting forb), white clover (Trifolium repens L., shallow-rooting legume) and red clover (Trifolium pratense L., deep-rooting legume) were established in mesocosms. Four plants of the same species were grown in monoculture communities and one of each species grown in four-species communities. Water supply was manipulated such that; compared with a baseline level with low variation in water supply, there was a treatment with medium variation (±40%) and another with high variation (±80%). Shoot and root biomass were measured, and vertical root distribution models fitted. Important Findings Compared with the low variation treatment, shoot biomass was significantly reduced under high variation for white clover, red clover and four-species communities. Under all conditions, four-species communities produced more shoot and root biomass than predicted by species performance in monoculture (overyielding). Under increased water variation, chicory monocultures allocated a higher proportion of root biomass to deeper soil layers while the total root biomass of white clover monocultures was significantly reduced. These results indicate that increased variability of water supply can negatively affect the shoot and root biomass production of single and multi-species grasslands. There is a need for further investigation of water variation effects on the functioning of multi-species grassland systems at field scale.


Author(s):  
R.J.M. Hay ◽  
D.L. Ryan

Five grasses (Nui ryegrass, Roa tall fescue, Matua prairie grass, Maru phalaris and experimental cocksfoot selection K1858) were sown in mixtures with Pawera tetraploid red clover and compared with a pure sward of Pawera and with a Ruanui ryegrass/Huia white clover control. Yields were taken when mean herbage height was 18 cm by cutting quadrats to 4 cm. Sufficient sheep were used to graze herbage in 48 hours on a 'Cafeteria' basis. Matua, the most rapidly establishing grass, yielded 900 kg DM/ha of sown grass at the first grazing, 4 to 6 times more than cocksfoot. Roa and Ruanui, and 30% more than Nui and Maru. During the next two years, the Matua/Pawera mixture outyielded other mixtures, with most of its superiority evident in the summer and winter. All mixtures outyielded Ruanui/Huia over the same period.The grasses evaluated varied in their compatability with Pawera, the more aggressive the grass the greater the suppression of DM yield of Pawera in the mixture. However, even the most aggressive grass mixture yielded more legume at each grazing than did the Ruanui/Huia pasture. The place of Matua, Nui and Pawera as useful varieties in this summer dry environment are discussed. Keywords: Pawera red clover, Nui ryegrass, Matua prairie grass, Roa tall fescue, Maru phalaris, K1858 cocksfoot, Ruanui ryegrass, Huia white clover, grazing,summer dry environment, Northern Southland.


Author(s):  
E.R. Thom ◽  
V.T. Burggraaf ◽  
C.D. Waugh ◽  
D.A. Clark

Milk production by Jersey cows grazing a common allowance of irrigated or non-irrigated pastures over four summers (1997-2000) is described. The pastures were: (1) high-endophyte perennial ryegrass-white clover (2) tall fescue, phalaris, cocksfoot, white clover, red clover (3) same as (2) plus paspalum (4) endophyte-free ryegrass, timothy, white clover, red clover and (5) existing high-endophyte ryegrass-white clover. Irrigation improved milksolids yield by 5% over 4 years, with inconsistent effects on milk composition, no effects on pasture in vitro digestibility and nitrogen content, and usually no effect on pasture botanical composition. In 1997, cows on (1) produced the lowest milksolid (MS) yields. Cows grazing ryegrass-white clover (1 and 5) produced less than those on tall fescue-based pastures (2 and 3) (0.74 vs 0.86 kg MS/cow/day) in 1998, and the yields of cows on ryegrass/timothy-based pastures (4) were best (0.96 kg MS/cow/day). The same trends in milksolids yield occurred in 1999, except for cows on (1) which were similar to (4). Cows on existing pasture often produced the lowest milksolid yields. Trends in milksolids production over the 4 years reflected trends in total clover (red + white) contents. Keywords: cocksfoot, dairy cows, grazing, pasture quality, perennial ryegrass, persistence, phalaris, red clover, tall fescue, timothy, triple mix, volunteer ryegrass, white clover


Author(s):  
A. John ◽  
J.A. Lancashire

Daily weight gains of sheep in pure sward grazing trials showed relative feeding values to be in the order: white clover (100) > sainfoin (97), Maku lotus (87) > lucerne, red clover (78) > perennial ryegrass (52). The high feeding value of lotus and sainfoin may be due to the presence of condensed tannins which have been shown to improve protein digestion and utilization in indoor feeding trials.


Author(s):  
G.J. Goold ◽  
W.C. Weeda

The pasture and animal productivity of established high producing pastures in the Waikato has been compared with newly sown pastures based on recently released herbage cultivars. The established pastures were a mixture of Nui perennial ryegrass, Paspalum dilatatum and Htiia white clover. The new cultivars tested were Ellett perennial ryegrass, Wana cocksfoot and Roa tall fescue, each sown with Pitau white clover. The main advantages of the new pastures containing Ellett were in increased autumn and winter herbage production, higher stock carrying capacity and lower hay requirements. The Ellett pastures had higher ryegrass content and lower weed levels than the older pastures. Wana cocksfoot when grown with Ellett ryegrass increased in content over the experimental period, especially under less intense grazing pressure although some frost damage was evident in winter wi!h a possible lowering of herbage nutritive value of the mixture. Tall fescue pastures only showed occasional merit in summer-autumn periods under the less intensive grazing regime. Keywords: established pastures, Nui ryegrass, Ellett ryegrass, Wana cocksfoot, Paspalum dilatatum, Huia white clover, Pitau white clover, Roa tall fescue, steer liveweight gains, seasonal herbage yields, herbage yields, herbage botanical composition.


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