Registro Completo |
Biblioteca(s): |
Embrapa Agrobiologia; Embrapa Tabuleiros Costeiros. |
Data corrente: |
27/06/1995 |
Data da última atualização: |
27/06/1995 |
Autoria: |
JONES, R. J. |
Título: |
Effect of previous cutting interval and of leaf area remaining after cutting on regrowth of macroptilium atropurpureum cv. siratro. |
Ano de publicação: |
1974 |
Fonte/Imprenta: |
Australian Journal of Experimental Agriculture and Animal Husbandry, Melbourne, v. 14, p. 343-348, 1974. |
Idioma: |
Inglês |
Conteúdo: |
Experiments with Siratro were conducted at Samford, outh east Queensland to study the effectsof previous cutting and defoliation treatments on regrowth. In the first experiment, swards of Siratro were cut at 7.5cm above ground level every 4 weeks, every 8 weeks or cut once at 16 weeks during spring and summer. Rregrowth of all teatments over ten weeks was measured after varying (by leaf removal) the stubble leaf area index (LAI) of the plots cut every four weeks. Pattern of regrowth yield was similar for all treatments with a pronounced lag phase after cutting.Regrowth yield after 10 weeks differed between treatments and was linerly related (P<0.01) to residual LAI in the stubble at the start of regrowth. In the absence of stubble leaves, plots previously cut at 16 weeks or at 8 weeks yielded marginally more than those cut every 4 weeks. There were no marked treatment differences in goss root morphology other than a two fold increase in stolon rooting for the 16 week treatment. Nitrogen content of the roots (mean 1.38 per cent) was unaffected by treatment, but the per cent hot water soluble sugars were lower for the 16 week defolation treatment than for the 8 week and the 4 week treatments. |
Palavras-Chave: |
Desfolhamento; Growth; N; Pastagens; Plants; Superficie. |
Thesagro: |
Crescimento; Folha; Macroptilium Atropurpureum; Manejo; Nitrogênio; Planta; Produção; Raiz; Siratro. |
Thesaurus Nal: |
defoliation; leaf area; nitrogen; yields. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02180naa a2200349 a 4500 001 1597658 005 1995-06-27 008 1974 bl --- 0-- u #d 100 1 $aJONES, R. J. 245 $aEffect of previous cutting interval and of leaf area remaining after cutting on regrowth of macroptilium atropurpureum cv. siratro.$h[electronic resource] 260 $c1974 520 $aExperiments with Siratro were conducted at Samford, outh east Queensland to study the effectsof previous cutting and defoliation treatments on regrowth. In the first experiment, swards of Siratro were cut at 7.5cm above ground level every 4 weeks, every 8 weeks or cut once at 16 weeks during spring and summer. Rregrowth of all teatments over ten weeks was measured after varying (by leaf removal) the stubble leaf area index (LAI) of the plots cut every four weeks. Pattern of regrowth yield was similar for all treatments with a pronounced lag phase after cutting.Regrowth yield after 10 weeks differed between treatments and was linerly related (P<0.01) to residual LAI in the stubble at the start of regrowth. In the absence of stubble leaves, plots previously cut at 16 weeks or at 8 weeks yielded marginally more than those cut every 4 weeks. There were no marked treatment differences in goss root morphology other than a two fold increase in stolon rooting for the 16 week treatment. Nitrogen content of the roots (mean 1.38 per cent) was unaffected by treatment, but the per cent hot water soluble sugars were lower for the 16 week defolation treatment than for the 8 week and the 4 week treatments. 650 $adefoliation 650 $aleaf area 650 $anitrogen 650 $ayields 650 $aCrescimento 650 $aFolha 650 $aMacroptilium Atropurpureum 650 $aManejo 650 $aNitrogênio 650 $aPlanta 650 $aProdução 650 $aRaiz 650 $aSiratro 653 $aDesfolhamento 653 $aGrowth 653 $aN 653 $aPastagens 653 $aPlants 653 $aSuperficie 773 $tAustralian Journal of Experimental Agriculture and Animal Husbandry, Melbourne$gv. 14, p. 343-348, 1974.
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Registro original: |
Embrapa Agrobiologia (CNPAB) |