A comparison between continuous and controlled grazing on a red duplex soil. I. Effects on soil physical characteristics

Proffitt, A. P. B.; Bendotti, S.; McGarry, D.

doi:10.1016/0167-1987(95)00486-6

Cited by 50 publications

(27 citation statements)

References 11 publications

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“…O R1 apresentou condições físicas do solo para o crescimento de plantas muito inferiores ao Cs. Este resultado discorda daquele encontrado por Proffitt et al (1995), em experimento comparando os sistemas de pastejo contínuo e controlado, implantados em um solo de textura média e pastejados por ovelhas. Ao fim do período experimental, os autores observaram que todos os atributos estruturais medidos (Ds, taxas de infiltração e resistência tênsil) indicaram que a qualidade física da camada superficial do solo sob sistema de pastejo controlado era superior à do sistema de pastejo contínuo, sendo similar à do tratamento não pastejado.…”

Section: Resultsunclassified

“…No sistema de pastejo controlado avaliado por Proffitt et al (1995), os animais eram retirados da área quando o solo se aproximava do limite de plasticidade, sendo possivelmente esta a razão pela qual esse sistema obteve um melhor resultado quando comparado com o sistema de pastejo contínuo. As diferenças no hábito de crescimento das espécies presentes nos sistemas de pastejo contínuo e rotacionado podem ter influenciado os resultados.…”

Section: Resultsunclassified

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Intervalo hídrico ótimo na avaliação de sistemas de pastejo contínuo e rotacionado

Leão¹,

Silva

Macedo³

et al. 2004

Rev. Bras. Ciênc. Solo

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Section: Resultsunclassified

Intervalo hídrico ótimo na avaliação de sistemas de pastejo contínuo e rotacionado

Leão¹,

Silva

Macedo³

et al. 2004

Rev. Bras. Ciênc. Solo

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“…Clearly, reduced grazing time, and subsequent reduced animal loading pressure, reduced soil physical damage. Research in Western Australia (Proffitt et al 1995) investigated soil physical parameters under traditional set stocking and soil wetness exclusion sheep grazing treatments during a winter-spring grazing period of 17 weeks. The plastic limit was found to be an important soil property for scheduling grazing, as the controlled-grazing and no-grazing treatments had greater surface infiltration rates and lower bulk densities than the set stocked treatment when winter grazing finished.…”

Section: Discussion Soil Responsementioning

confidence: 99%

Grazing strategies to protect soil physical properties and maximise pasture yield on a Southland dairy farm

Houlbrooke¹,

Drewry²,

Monaghan³

et al. 2009

New Zealand Journal of Agricultural Research

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intensive dairy cattle grazing on wet soil can have a detrimental effect on soil physical quality and consequently on pasture production. Soil physical properties (porosity, bulk density, saturated hydraulic conductivity) of a Pallic soil (Pukemutu silt loam) and pasture production were assessed on a dairy farm in Southland, New Zealand, under a number of different cattle grazing strategies: (i) normal grazing management on undrained land, (ii) normal grazing practice on drained land, (iii) restricted autumn grazing, (iv) restricted grazing when soil conditions were wet, (v) never pugged, and (vi) never grazed. a hand-pushed cone penetrometer determined treatments (iv) and (v). Soil macroporosity was significantly greater (P < 0.05) on the never grazed plot than all other treatments at post-spring sampling each year. There were no significant differences in any soil physical properties measured on cattle grazed treatments. Spring pasture yield from the never grazed treatment was greater (P < 0.05) than the drained and undrained standard practice grazing treatments for one of the three seasons. The lack of treatment differences in soil physical properties and pasture yield from grazing treatments suggests that the never pugged grazing strategy failed to prevent soil compaction by dairy cows. To some extent this is expected as soil compaction occurs at soil water contents lower than the thresholds for pugging damage. However, the large number of grazing events when soil conditions were considered safe according to the never pugged treatment protocol, but when soil water content was greater than the plastic limit, probably contributed to both soil treading damage and compaction during the traditionally wet early spring period.

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“…Animal trampling at times when the surface soil obviously exceeded its plastic limit increased SSS at 0-30 and 70-100 mm compared with the ungrazed control (Table 3). Proffitt et al [16,18] reported similar findings under a traditional sheep grazing system, in which grazing increased soil strength and bulk density and McDowell et al [12] obtained similar results under grazed dairy pastures. The drawbar power required to pull a direct drill planter set at a depth of 70 mm was higher in the grazed treatment than the control (Table 3).…”

Section: Discussionmentioning

confidence: 81%

Effects of Grazing Sorghum Stubble on Soil Physical Properties and Subsequent Crop Performance

Radford¹,

Yule²,

Braunack³

et al. 2008

American J. of Agricultural and Biological Sciences

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Abstract:Two grazing trials were conducted on a Vertosol in central Queensland to assess the effects of stubble grazing by cattle on soil properties and subsequent crop performance. Two adjacent contour bays were selected for two treatments (grazed and ungrazed) in each trial. Both trials were conducted following a grain sorghum crop. In trial 1 (during 1996) the surface soil was dry throughout grazing. In trial 2 (during 1998) the surface soil became saturated during grazing after 125 mm of rain. Soil physical properties including bulk density, shear strength, cone index and hydraulic conductivity were measured pre-and post-grazing in both trials and the response of wheat crops sown after grazing was assessed. The area was then double-cropped to sorghum to measure any further residual impacts. After grazing on dry soil, hoof marks were barely evident and no significant change was found in any soil physical property or the establishment or yield of a subsequent wheat crop. After grazing on saturated soil, there were visible hoof marks 49 mm deep and increases in soil shear strength, cone index and drawbar power requirement. The following wheat crop had reduced dry matter at 32 days and reduced grain yield. There was no immediate change in ground cover and no effect on wheat establishment following direct-drilling 37 days after the cattle were removed. In a sorghum crop following the wheat crop, there were no carryover effects on any soil physical property or on crop yield. We conclude that under a similar regime to that of trial 1 (dry soil and no rainfall during grazing), adverse effects of stubble grazing are unlikely. It follows that if grazing can be restricted to times when the surface soil is dry enough to minimise compaction by animals, there is little risk of adverse effects on subsequent crop performance.

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A comparison between continuous and controlled grazing on a red duplex soil. I. Effects on soil physical characteristics

Cited by 50 publications

References 11 publications

Intervalo hídrico ótimo na avaliação de sistemas de pastejo contínuo e rotacionado

Intervalo hídrico ótimo na avaliação de sistemas de pastejo contínuo e rotacionado

Grazing strategies to protect soil physical properties and maximise pasture yield on a Southland dairy farm

Effects of Grazing Sorghum Stubble on Soil Physical Properties and Subsequent Crop Performance

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