Effect of shade on regrowth potential of two shade tolerant Paspalum grasses Malaysia

Wong C.C., . and Stur W.W., . Effect of shade on regrowth potential of two shade tolerant Paspalum grasses Malaysia. pp. 55-61. ISSN 1394-3227

The poor persistence of sown tropical pasture in perennial plantation crops has not been studied in the past although prostrate grasses have been observed to persist better under frequent defoliation at low light. An experiment was conducted to evaluate the effect of defoliation frequency on the growth and survival of two shade-tolerant grasses of contrasting growth habits (erect vs. prostrate) at light levels of 100 50 and 20 percent ambient sunlight. Dry matter yield of shoot stubble and roots in both grasses was significantly reduced by shading and frequent defoliation. Paspalum wettsteinii maintained a higher root composition while P. malacophyllum had a larger shoot component. The prostrate P. wettsteinii was inferior to the erect P. malacophyllum in terms of regrowth vigour and plant survival over the three regrowth cycles. Regrowth ability and plant survival were not associated with growth habit as hypothesised but were related to the size of biomass below cutting height and dry matter allocation to the various plant components

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Abstract

The poor persistence of sown tropical pasture in perennial plantation crops has not been studied in the past although prostrate grasses have been observed to persist better under frequent defoliation at low light. An experiment was conducted to evaluate the effect of defoliation frequency on the growth and survival of two shade-tolerant grasses of contrasting growth habits (erect vs. prostrate) at light levels of 100 50 and 20 percent ambient sunlight. Dry matter yield of shoot stubble and roots in both grasses was significantly reduced by shading and frequent defoliation. Paspalum wettsteinii maintained a higher root composition while P. malacophyllum had a larger shoot component. The prostrate P. wettsteinii was inferior to the erect P. malacophyllum in terms of regrowth vigour and plant survival over the three regrowth cycles. Regrowth ability and plant survival were not associated with growth habit as hypothesised but were related to the size of biomass below cutting height and dry matter allocation to the various plant components

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Item Type:	Article
Additional Information:	Summary (En)
AGROVOC Term:	forage harvesters
AGROVOC Term:	Paspalum
AGROVOC Term:	experimentation
AGROVOC Term:	rebounce
AGROVOC Term:	light requirements
AGROVOC Term:	plant habit
Geographical Term:	Malaysia
Depositing User:	Ms. Norfaezah Khomsan
Date Deposited:	13 Jun 2025 00:44
Last Modified:	13 Jun 2025 00:44
URI:	http://webagris.upm.edu.my/id/eprint/17077

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