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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
09/06/1995 |
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Data da última atualização: |
20/09/2011 |
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Autoria: |
BOYD, D. A. |
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Título: |
Experiments with leys and permanent grass. |
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Ano de publicação: |
1949 |
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Fonte/Imprenta: |
Journal of the British Grassland Society, v.4, n.1, p.1-10, 1949. |
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Idioma: |
Inglês |
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Conteúdo: |
The paper discusses some general questions affecting the design and technique of experiments on grassland. Experimental results are quoted which emphasize the importance of choosing a uniform site for experiments and of employing adequate replication. It is suggested that the experimenter can best fulfil these requirements by reducing plot-size and that he should aim at plots of the order of 0.25 acre even if this involves some modification of the grazing management. Small plots should also enable him to include a more comprehensive range of tratments and to gain the advanmtages of factorial design. The value of grass-cutting as a check on grazing management and to allow a further reduction in plot-size is examined. The application of these principles is illustrated from the design of a new experiment being laid down at Rothamsted; some results from a similar experiment on the residual effect on arable crops of different ley and arable rotations are described. It is concluded that there is a pressing need for more experimental work on grassland problems. |
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Palavras-Chave: |
Avaliacao; Evaluation; Introducao; Introduction; Pasture. |
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Thesagro: |
Pastagem. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01557naa a2200193 a 4500
001 1784464
005 2011-09-20
008 1949 bl --- 0-- u #d
100 1 $aBOYD, D. A.
245 $aExperiments with leys and permanent grass.
260 $c1949
520 $aThe paper discusses some general questions affecting the design and technique of experiments on grassland. Experimental results are quoted which emphasize the importance of choosing a uniform site for experiments and of employing adequate replication. It is suggested that the experimenter can best fulfil these requirements by reducing plot-size and that he should aim at plots of the order of 0.25 acre even if this involves some modification of the grazing management. Small plots should also enable him to include a more comprehensive range of tratments and to gain the advanmtages of factorial design. The value of grass-cutting as a check on grazing management and to allow a further reduction in plot-size is examined. The application of these principles is illustrated from the design of a new experiment being laid down at Rothamsted; some results from a similar experiment on the residual effect on arable crops of different ley and arable rotations are described. It is concluded that there is a pressing need for more experimental work on grassland problems.
650 $aPastagem
653 $aAvaliacao
653 $aEvaluation
653 $aIntroducao
653 $aIntroduction
653 $aPasture
773 $tJournal of the British Grassland Society$gv.4, n.1, p.1-10, 1949.
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Registro original: |
Embrapa Pantanal (CPAP) |
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