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Distribution of Water-Soluble Carbohydrate Reserves in the Stubble of Prairie Grass and Orchardgrass Plants

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Turner, LR, Donaghy, DJ, Lane, PA and Rawnsley, RP 2007 , 'Distribution of Water-Soluble Carbohydrate Reserves in the Stubble of Prairie Grass and Orchardgrass Plants' , Agronomy Journal, vol. 99, no. 2 , pp. 591-594 , doi: I0.21.34/agronj2006.022J.

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Abstract

A greenhouse study was undertaken to investigate the distribution of water-soluble carbohydrates (WSC) within the lower 100 mm of 'Kara' orchardgrass (Dactylis glomerata L.) and 'Matua' prairie grass (Bromus willdenowii Knnth.) stubble through four distinct regrowth cycles. Water-soluble carbohydrate levels were consistently higher in prairie grass tillers compared with orchardgrass tillers. A decrease in WSC levels with increasing stubble height was observed for vegetative tillers of both species. However, the WSC concentration gradient was better defined for orchardgrass, with a clear decrease in WSC concentration between the 21-to 30-and 31-to 40•mm segments, and 77% of WSC content contained within the O- to 30-mm stubble height range (with 0 mm representing the base at ground level). The WSC concentration gradient for prairie grass was less clearly defined, with a relatively high WSC concentration throughout the 0-to 100-mm stubble height range.

Item Type: Article
Authors/Creators:Turner, LR and Donaghy, DJ and Lane, PA and Rawnsley, RP
Journal or Publication Title: Agronomy Journal
Publisher: American Society of Agronomy, Inc
ISSN: 0002-1962
DOI / ID Number: I0.21.34/agronj2006.022J
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