About Us | Help Videos | Contact Us | Subscriptions
 

Abstract

 

This article in CS

  1. Vol. 29 No. 4, p. 944-948
     
    Received: July 5, 1988


    * Corresponding author(s):
 View
 Download
 Alerts
 Permissions
Request Permissions
 Share

doi:10.2135/cropsci1989.0011183X002900040022x

Maturity Effect on Yield and Quality of Spring Harvested Orchardgrass Forage

  1. Clyde C. Berg  and
  2. R. R. Hill
  1. USDA-ARS, U.S. Regional Pasture Res. Lab., Curtin Road, University Park, PA 16802

Abstract

Abstract

Orchardgrass (Dactylis glomerata L.) forage quality declines rapidly as plants mature. First harvest forage of 48 clones from ‘Pennlate’ orchardgrass was evaluated for yield and forage quality parameters. The objective of the experiment was to determine variability for rates of change in these parameters as the forage matured. Forage harvested un four dates (25 May, 1, 7, and 14 June) for 3 was analyzed for crude protein (CP), in vitro dry matter disappearance (IVDMD), neutral detergent fiber (NDF), acid detergent fiber (ADF), and lignin using infrared reflectance analysis techniques. Forage yield and maturity at harvest time were recorded. Significant date ✕ clone interactions were observed for all traits, but mean squares for clones were generally 10 or more times larger than for interactions. Clones that made large contributions to the date ✕ clone interaction typically had low yields and smaller than average declines in quality, or greater than average yields with greater than average declines in quality as the season progressed. No clone exhibited the desired interaction of high forage yield and a slower than average decline in forage quality, and genetic analysis suggested that development of such populations would be extremely difficult.

Contribution no. 8809.

  Please view the pdf by using the Full Text (PDF) link under 'View' to the left.

Copyright © 1989. Crop Science Society of America, Inc.Copyright © 1989 by the Crop Science Society of America, Inc.