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Preharvest neutral detergent fiber concentration of temperate perennial grasses as influenced by stubble height


Parsons, D and McRoberts, KC and Cherney, JH and Cherney, DJR and Bosworth, SC and Jimenez-Serrano, FR, Preharvest neutral detergent fiber concentration of temperate perennial grasses as influenced by stubble height, Crop Science, 52, (2) pp. 923-931. ISSN 0011-183X (2012) [Refereed Article]

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Copyright Statement

Copyright 2012 Crop Science Society of America

DOI: doi:10.2135/cropsci2011.09.0478


Regression equations were developed to estimate the preharvest neutral detergent fiber (NDF) concentration of temperate perennial grasses at variable cutting height. These equations can be used by producers to improve harvest timing to optimize the nutritive value of spring grass forages. The objective of this experiment was to develop equations that incorporate stubble height to estimate NDF concentration of pure grass stands. Stands of first-cut orchardgrass (Dactylis glomerata L.), reed canarygrass (Phalaris arundinacea L.), and timothy (Phleum pratense L.) were sampled in experimental sites and producersí fields in New York in 2009, cut into 5-cm segments, and analyzed for dry matter (DM) production and NDF concentration. Predictive NDF and DM equations were developed for each segment. Equations describing the change with grass height in the contribution of each segment to the overall DM were used to develop equations for predicting whole-plant NDF. Two evaluation data sets from Vermont and New York were used to test the equations. Dry matter loss equations were promising and merit further evaluation. Whole-plant NDF equations had some merit but may have limited predictive capacity under conditions and years different than those used in equation development.

Item Details

Item Type:Refereed Article
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Crop and pasture production
Research Field:Agronomy
Objective Division:Animal Production and Animal Primary Products
Objective Group:Pasture, browse and fodder crops
Objective Field:Sown pastures (excl. lucerne)
UTAS Author:Parsons, D (Dr David Parsons)
ID Code:73972
Year Published:2012
Web of Science® Times Cited:2
Deposited By:Agricultural Science
Deposited On:2011-11-02
Last Modified:2017-11-06

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