Library Open Repository

Estimation of spring forage quality for alfalfa in New York State

Downloads

Downloads per month over past year

Parsons, D and Cherney, JH and Gauch, HG (2006) Estimation of spring forage quality for alfalfa in New York State. Forage and Grazinglands.

[img] PDF
estimation_of_spring_forage_quality_for_alfalfa_in_NY_State.pdf | Request a copy
Full text restricted
Available under University of Tasmania Standard License.

Abstract

Equations were developed to estimate alfalfa neutral detergent fiber (NDF) concentration in spring growth in New York State, using easily available variables and a typical cutting height used by growers. Models with two or three explanatory variables had greater predictive accuracy than models containing more variables. Models combining alfalfa height, growing degree days, and Julian date offer the greatest potential to increase predictive accuracy. Stage of maturity did not improve prediction accuracy. Predictions using the predictive equations for alfalfa quality (PEAQ) with alfalfa sampled in New York were biased, possibly due to differences in cutting height between observations used to fit the equation, and typical cutting heights in New York State. An equation previously fit to New York, using only the explanatory variable alfalfa height, was less biased.

Item Type: Article
Journal or Publication Title: Forage and Grazinglands
Additional Information: Copyright © 2006 Plant Management Network
Date Deposited: 13 Apr 2012 05:28
Last Modified: 18 Nov 2014 04:29
URI: http://eprints.utas.edu.au/id/eprint/12969
Item Statistics: View statistics for this item

Repository Staff Only (login required)

Item Control Page Item Control Page