The Leaf Growth of Trifolium Repens as Influenced by Seasonal Changes in the Light Environment

Brougham, R. W.

doi:10.2307/2257455

Cited by 38 publications

(14 citation statements)

References 15 publications

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“…Watson [8], cited by Black [9], demonstrated that a measure of the size of the plant photosynthetic apparatus was important in making comparisons of crop yield and productivity, and proposed the concept of leaf area index (LAI). Brougham [10][11][12][13][14][15][16] demonstrated the importance of LAI for understanding the relationship between canopy light interception (LI) and herbage accumulation and the interaction between defoliation frequency and severity.…”

Section: Forage Grass Research-a Historical Overviewmentioning

confidence: 99%

Ecophysiology of C4 Forage Grasses—Understanding Plant Growth for Optimising Their Use and Management

2015

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Grazing management has been the focus of the research with forage plants in Brazil for many years. Only in the last two decades, however, significant changes and advances have occurred regarding the understanding of the key factors and processes that determine adequate use of tropical forage plants in pastures. The objective of this review is to provide an historical overview of the research with forage plants and grasslands in Brazil, highlighting advances, trends, and results, as well as to describe the current state of the art and identify future perspectives and challenges. The information is presented in a systematic manner, favoring an integrated view of the different trends and research philosophies. A critical appraisal is given of the need for revision and change of paradigms as a means of improving and consolidating the knowledge on animal production from pastures. Such analysis idealizes efficient, sound and sustainable grazing management practices necessary to realize the existing potential for animal production in the tropics.

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Section: Forage Grass Research-a Historical Overviewmentioning

confidence: 99%

Ecophysiology of C4 Forage Grasses—Understanding Plant Growth for Optimising Their Use and Management

2015

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“…Mean growth rates of A. tenuis and T. repens for the different yield periods (Table 1) indicate the basis of the highly significant sward type X yield period interaction. A. tenuis was markedly suppressed in the infrequently cut swards from period 3 to the completion of the experiment because of the high summer -autumn growth rate of T. repens, the increase of growth rate by infrequent cutting, and the development of a T. repens canopy which by petiole elongation (Brougham 1962) overtopped and shaded A. tenuis. Consequently, an equilibrium was established in which A. tenuis formed a very small percentage of the yield of the mixture; the seasonal change of the mixtures followed closely that of the T. repens monoculture, and there was no indication of response by A. tenuis to nitrogen transferred from the legume (Fig.…”

Section: Resultsmentioning

confidence: 99%

Competition among pasture plants

Harris¹

1974

New Zealand Journal of Agricultural Research

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Competition between Agrostis tenuis and Trifolium repens, as affected by a 2 x 2 application of cutting height and frequency on simulated swards, was quantified by the de Wit (1960) model. Cutting height and frequency treatments were discontinued after 6 and 17 months respectively, all plots being cut uniformly for the last 7 months of the experiment.A. tenuis was strongly suppressed by T. repens during the first summer, under infrequent cutting, and this suppression was maintained for the remainder of the experiment. There was a clearly defined difference between the competitive power of A. tenuis in the hard and laxly cut frequent cutting treatments, this effect continuing into the final phase of the experiment when, under monthly cutting, T. repens gained competitively in the frequent -hard treatment, whereas A. tenuis maintained its competitive power in the frequent -lax treatment.Yield increases of mixtures over monocultures under frequent cutting are attributed to effects of nitrogen transfer from legume to grass and different seasonal growth periodicities. The results imply that in regions where A. tenuis ingress is important, increase in the intervals between defoliations will allow T. repens and ryegrass to shade and suppress A. tenuis. This will result in more efficient use of phosphate through reduced competition by A. tenuis and better use of phosphate and other nutrients by desired species.

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“…Because a large part of the daily radiation is incident during a 4-h period around local noon, changes in IlI" at local noon are likely 3 …”

Section: Resultsmentioning

confidence: 99%

Light Attenuation Coefficient and Productivity in ’vernal’ Alfalfa

Hunt¹,

Winch²,

Moore³

1970

Can. J. Plant Sci.

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The Leaf Growth of Trifolium Repens as Influenced by Seasonal Changes in the Light Environment

Cited by 38 publications

References 15 publications

Ecophysiology of C4 Forage Grasses—Understanding Plant Growth for Optimising Their Use and Management

Ecophysiology of C4 Forage Grasses—Understanding Plant Growth for Optimising Their Use and Management

Competition among pasture plants

Light Attenuation Coefficient and Productivity in ’vernal’ Alfalfa

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