Improvement in soil structure associated with white clover

Mytton, L. R.; Cresswell, A.; Colbourn, P.

doi:10.1111/j.1365-2494.1993.tb01840.x

Cited by 53 publications

(35 citation statements)

References 11 publications

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“…Indeed, the fact that the structuring of soil by clover which we observed, Figs. 3-5, was much less evident than that encountered by Mytton et al (1993), suggests that sieved and re-packed Crediton soil may not be the best substrate to show the effect.…”

Section: Discussioncontrasting

confidence: 53%

“…In recognition of this, the clover was grown under simulated organic farming conditions, receiving a tenth of the N of the simulated conventional regime used for the grass. There is evidence that clover might cause a more open void structure in soil (Mytton et al, 1993;Papadopoulos et al, 2006), and therefore promote leaching. The aim of the modelling, carried out with the void network model 'Pore-Cor', was to explore this hypothesis.…”

Section: Introductionmentioning

confidence: 99%

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Measurement and simulation of void structure and hydraulic changes caused by root-induced soil structuring under white clover compared to ryegrass

Holtham

Matthews

Scholefield³

2007

Geoderma

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Section: Discussioncontrasting

confidence: 53%

Section: Introductionmentioning

confidence: 99%

Measurement and simulation of void structure and hydraulic changes caused by root-induced soil structuring under white clover compared to ryegrass

Holtham

Matthews

Scholefield³

2007

Geoderma

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“…The roots and herbage of legumes usually have C:N ratios in the range of 13:1 to 20:1 (Marstorp and Kirchman 1991) and thus will tend to mineralize N more readily than grasses. Mytton et al (1993) also suggest that the presence of legumes such as white clover (Trifolium repens L.), in swards could improve soil structure, which, in turn, may increase mineralization rate.…”

Section: Soil and Plant N Dynamicsmentioning

confidence: 99%

Pasture type and fertilization effects on soil chemical properties and nutrient redistribution

Chen¹,

McCaughey²,

Grant³

et al. 2001

Can. J. Soil. Sci.

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. 2001. Pasture type and fertilization effects on soil chemical properties and nutrient redistribution. Can. J. Soil Sci. 81: 395-404. Soil samples were collected from beef pastures varying in species composition and fertilizer inputs after being grazed by cow-calf pairs for 4 yr (1995)(1996)(1997)(1998) near Brandon, Manitoba. The objective of this experiment is to examine the impact of 4 yr of continuous rotational grazing on soil chemical properties and nutrient redistribution in mixed alfalfa-grass and pure-grass pastures with or without fertilization. Pastures were established on an Orthic Black Chernozemic, fine sandy-loam soil. Compared with N-fertilized pure-grass pastures, alfalfa-grass pastures had greater seasonal soil mineral-N supply, and tended to have higher total soil C, N and organic C. In grazed systems in this environment, the use of alfalfa as the primary N source may be more profitable and sustainable than using fertilizer N. However, considering the seasonal changes in soil nitrification rate observed in alfalfa-grass pastures, caution needs to be taken when stands with high legume content are used to maximize animal performance, because this may increase the risk of N losses into the environment. Fertilization over a 5-yr period (1994)(1995)(1996)(1997)(1998) tended to lower surface soil pH. Application of P significantly increased soil "extractable" P levels in the top 15-cm soil layer. However, K fertilization only increased surface soil "extractable" K slightly compared with unfertilized pastures. There was also no effect of S application on soil "extractable" S. Zone effects on soil mineral N and soil "extractable" P, K and S were limited to the surface (0-7.5 cm). For mineral N, the zone effect seemed to be more pronounced in first rotation than in second rotation. The magnitude of K redistribution was greater than for S and P due to higher K intake and excretion. Use of rotational stocking with short grazing periods appears to have resulted in a relatively even redistribution of nutrients derived from animal excreta.

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“…Soil structure improvements have been recorded in soil cores into which clover (or grass and clover) had been planted rather than pure perennial ryegrass (Mytton et al 1993). Soil drainage was faster and cores were more friable with a greater number of macropores.…”

Section: The Living Soilmentioning

confidence: 99%

Pasture research in the UK: Present knowledge and future prospects

Davies¹

1998

Can. J. Plant Sci.

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Davies, A. 1998. Pasture research in the UK: present knowledge and future prospects. Can. J. Plant Sci. 78: 211-216. Pasture research in the UK has increasingly been aimed at understanding the mechanisms that underlie pasture plant responses to different managements. The need to develop agricultural systems that are both sustainable and economically viable has strengthened interest in reliable animal production from pasture and has emphasised the need to understand how white clover can best be maintained in the grazed sward. Breeders are focusing on meeting the nutritional requirements of the grazing animal and are enjoying increasing success in incorporating new genetic material from plant collections into varieties of grass and clover which are better able to withstand environmental stresses. Economic and environmental considerations have stimulated interest in gaining further insights into the nature of (and the reasons for) the species changes which follow reductions in fertiliser inputs and stocking rates. The possibility of harnessing the preferences of different grazing animals to influence vegetational change is being explored. Soil microbiology and nutrient availability in soils (and their influence on future productive capacity) are also influenced by reduced inputs and are subjects attracting increased interest. This paper discusses current understanding of these topics in the UK and identifies some specific problems that require further study.Key words: Clover, grass, grazing, pasture composition, plant breeding Davies, A. 1998. Recherches pastorales au Royaume-Uni : état actuel des connaissances et perspectives d'avenir. Can. J. Plant Sci. 78: 211-216. Les recherches pastorales au Royaume-Uni s'attachent de plus en plus à améliorer la compréhension des mécanismes sous-jacents du comportement des plantes de pâturage à l'égard des diverses modalités d'exploitation. Le besoin de mettre au point des systèmes culturaux à la fois durables et économiques et économiquement viable a eu pour effet de raffermir l'intérêt pour une production animale fiable au pâturage et d'accentuer entre autre la necessité de comprendre les moyens de garder le trèfle blanc dans le peuplement herbager. Les phytogénétistes s'appliquent à satisfaire les besoins nutritionnels de l'animal à l'herbe et ont enregistré des succès croissants dans l'introduction, dans les nouvelles variétés de graminées et de trèfle, de matériel génétique exogène qui les rend plus à même de résister aux stress environnementaux. Les considérations économiques et écologiques ont eu pour effet de stimuler l'intérêt pour une meilleure connaissance de la nature et des causes des changements de la composition botannique du pâturage, consécutifs aux apports d'engrais chimiques et aux divers taux de chargement animal. On examine les possibilités de mettre à profit les préférences de différentes espèces herbivores pour manipuler l'évolution du couvert prairial. La microbiologie du sol et l'assimilabilité des éléments nutritifs du sol ainsi que leur influence su...

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Improvement in soil structure associated with white clover

Cited by 53 publications

References 11 publications

Measurement and simulation of void structure and hydraulic changes caused by root-induced soil structuring under white clover compared to ryegrass

Measurement and simulation of void structure and hydraulic changes caused by root-induced soil structuring under white clover compared to ryegrass

Pasture type and fertilization effects on soil chemical properties and nutrient redistribution

Pasture research in the UK: Present knowledge and future prospects

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