No-Till Pasture Renovation After Sward Suppression by Herbicides

Malik, N.; Waddington, J.

doi:10.4141/cjps90-028

Cited by 15 publications

(13 citation statements)

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“…L'6tude donne )r penser que les lign6es de luzerne issues du germoplasme de la sous-espbcefalcata affichent un comportement er long terme sup6rieur lorsque la iuzerne est cultivde en m6lange binaire avec du brome. (Malik and Waddington 1990), although the cost is higher than standard reseeding practices.…”

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Performance of alfalfa strains grown in mixture with smooth bromegrass as affected by management

Bittman¹,

Waddington²,

McCartney³

1991

Can. J. Plant Sci.

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Performance of alfalfa strains grown in mixture with smooth bromegrass as affected by management

Bittman¹,

Waddington²,

McCartney³

1991

Can. J. Plant Sci.

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“…The costs of reintroducing productive grasses and legumes to unproductive swards of rough pastures may be difficult to recover (McCartney 1993), although innovative sod-seeding techniques may reduce the cost of establishing alfalfa (Malik and Waddington 1990). Previous studies in western Canada have investigated the effects of fertilizers containing N, P, K and S on yield of simple swards (usually dominated by bromegrass or bromegrass and alfalfa) harvested as hay (Ukrainetz et al 1988;Mahli et al 1993) or pasture (Cooke et al 1965(Cooke et al , 1968Nuttall et al 1980Nuttall et al , 1991.…”

mentioning

confidence: 99%

Long-term effects of fertilizer on yield and species composition of contrasting pasture swards in the Aspen Parkland of the Northern Great Plains

Bittman¹,

McCartney²,

Waddington³

et al. 1997

Can. J. Plant Sci.

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. 1997. Long-term effects of fertilizer on yield and species composition of contrasting pasture swards in the Aspen Parkland of the Northern Great Plains. Can. J. Plant Sci. 77: 607-614. Little is known about the effects of long-term application of fertilizer on the complex pasture swards of the Aspen Parkland region of western Canada. Experiments were conducted, lasting from 1980 to 1992, on five contrasting swards representative of permanent pastures in northeast Saskatchewan to determine the long-term effects of N, P, K and S fertilizer on herbage yield and species composition. The experimental swards consisted primarily of smooth bromegrass (Bromus inermis Leyss.), Kentucky bluegrass (Poa pratensis L), and creeping red fescue (Festuca rubra L.), in varying amounts. Seven fertilizer treatments were applied at each site from 1980 to 1991 (shown as N-P-K-S in kg ha -1 ): 0-0-0-0, was added in 1984. An area within each plot was protected from grazing with wire exclosures and harvested in July and September. Harvested samples were classified according to coarseleafed grasses (mostly smooth bromegrass), fine-leafed grasses (mostly Kentucky bluegrass and creeping red fescue), legumes and weeds before drying and weighing. Ground cover composition of all plots was measured by a modified line transect technique in 1980, 1987 and 1992. All swards, regardless of species composition, responded positively to fertilizer. The yield increase obtained from applying 45 or 90 kg N ha -1 (0.8 and 0.7 t ha -1 , respectively) was more than doubled by adding 20 kg P ha -1 with the N. Nitrogen applied alone did not affect the proportion of bromegrass but increased the proportion of fine grasses in the herbage; adding N and P increased the proportion of coarse grass and at the expense of fine grasses. With respect to sward composition, N decreased the proportion of bromegrass and increased the proportion of bluegrass and fescue whereas adding N and P had the opposite effect. Application of S increased yield 0.9 to 1.8 t ha -1 and greatly increased the proportion of bromegrass in the sward and the harvested herbage of the three sites with low levels of soil S. The residual effect of the N and P treatments on yield was small but the effect on species composition of the herbage was substantial; S produced a residual effect on yield in 1992 and a large residual effect on species composition. The results indicate the need for balanced nutrient application to enhance yield and maintain or improve sward species composition of pastures in the Aspen Parkland. Fertilizer can be used to improve yield on a wide range of sward types.Key words: Bromegrass, Bromus inermis, bluegrass, Poa pratensis, fescue, Festuca rubra, legume, N, P, K, S, grazing, species diversity Bittman, S., McCartney, D. H., Waddington, J., Horton, P. R. et Nuttall, W. F. 1997. Effets de longue durée de la fumure sur le rendement et la composition botanique de différents pâturages dans la Tremblaie des grandes plaines du nord. Can. J. Plant Sci. 77: 607-614. Il existe peu de...

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“…Competition from associated gnNses -whether seeded, native or volunteer -contributes to the loss ofalfalfa plant populations (Berdahl et al 1989; Bittman et al l99l; Smith et al 1992). Reestablishing alfalfa in pasture swards is difficult and expensive (Malik and Waddington 1990).…”

mentioning

confidence: 99%

Evaluating alfalfa cultivars and germplasms for pastures using the mob-grazing technique

Bittman¹,

McCartney²

1994

Can. J. Plant Sci.

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No-Till Pasture Renovation After Sward Suppression by Herbicides

Abstract: Can.

Cited by 15 publications

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Performance of alfalfa strains grown in mixture with smooth bromegrass as affected by management

Performance of alfalfa strains grown in mixture with smooth bromegrass as affected by management

Long-term effects of fertilizer on yield and species composition of contrasting pasture swards in the Aspen Parkland of the Northern Great Plains

Evaluating alfalfa cultivars and germplasms for pastures using the mob-grazing technique

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