HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Figures Only Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Related articles in Crop Science Similar articles in this journal Similar articles in Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Web of Science (7) Citing Articles via Google Scholar Google Scholar Articles by Newman, Y. C. Articles by Hall, M. B. Search for Related Content PubMed Articles by Newman, Y. C. Articles by Hall, M. B. Agricola Articles by Newman, Y. C. Articles by Hall, M. B. Related Collections Agroclimatology Forage Management Other Legumes Crop Growth and Development Temperature Stress Crop Ecology

FORAGE & GRAZING LANDS

Temperature and Carbon Dioxide Effects on Nutritive Value of Rhizoma Peanut Herbage

^a Agronomy Dep., Univ. of Florida, Gainesville, FL 32611-0300
^b USDA-ARS, P.O. Box 110965, Gainesville, FL 32611-0965
^c U.S. Dairy Forage Research Center, 1925 Linden Drive-West, Madison, WI 53706-1108

^* Corresponding author (les{at}ifas.ufl.edu)

Studies assessing the impact of climate change have focused on plant production, but forage nutritive value, especially of legumes, has often been overlooked. The objective of this study was to determine the effect of increasing temperature and atmospheric CO₂ concentration on chemical composition and digestibility of rhizoma peanut (RP, Arachis glabrata Benth.) leaf and stem. In vitro digestible organic matter (IVDOM), neutral and acid detergent fiber (NDF and ADF), and lignin concentrations were determined for plants grown in all combinations of two CO₂ (360 and 700 µmol mol^–1) and four temperature environments (baseline, or ambient temperature in the greenhouse, B; B + 1.5; B + 3.0; and B + 4.5°C). Forage was sampled every 6 to 8 wk during two growing seasons. Neither increasing CO₂ nor temperature affected leaf IVDOM, but stem IVDOM declined from 562 (B) to 552 g kg^–1 (B + 4.5) with increasing temperature in Year 1 and from 577 to 511 g kg^–1 in Year 2. Stem NDF increased with increasing temperature from 556 to 561 g kg^–1 in Year 1 and from 519 to 526 g kg^–1 in Year 2. Stem ADF (412 to 418 g kg^–1) and lignin (80 to 93 g kg^–1) increased linearly as temperature increased in 1 of 2 yr. Lignin as a proportion of NDF or ADF (lignin/NDF or lignin/ADF) accounted for a large proportion of the variation in stem IVDOM. The RP nutritive value decreases with increasing air temperature, but it is relatively unaffected by atmospheric CO₂ concentrations in the range studied.

Abbreviations: ADF, acid detergent fiber • B, baseline temperature • DM, dry matter • IVDOM, in vitro digestible organic matter • NDF, neutral detergent fiber • OM, organic matter • PAR, photosynthetically active radiation • RP, rhizoma peanut • TGG, temperature-gradient greenhouse

Related articles in Crop Science:

THIS ISSUE IN CROP SCIENCE

Crop Science 2005 45: xi. [Full Text]  

This article has been cited by other articles:

				R. L. Stewart Jr., L. E. Sollenberger, J. C. B. Dubeux Jr., J. M. B. Vendramini, S. M. Interrante, and Y. C. Newman Herbage and Animal Responses to Management Intensity of Continuously Stocked Bahiagrass Pastures Agron. J., January 1, 2007; 99(1): 107 - 112. [Abstract] [Full Text] [PDF]

				L. H. Allen Jr., S. L. Albrecht, K. J. Boote, J. M. G. Thomas, Y. C. Newman, and K. W. Skirvin Soil organic carbon and nitrogen accumulation in plots of rhizoma perennial peanut and bahiagrass grown in elevated carbon dioxide and temperature. J. Environ. Qual., July 1, 2006; 35(4): 1405 - 1412. [Abstract] [Full Text] [PDF]

				Y. C. Newman, L. E. Sollenberger, K. J. Boote, L. H. Allen Jr., J. M. Thomas, and R. C. Littell Nitrogen Fertilization Affects Bahiagrass Responses to Elevated Atmospheric Carbon Dioxide Agron. J., March 2, 2006; 98(2): 382 - 387. [Abstract] [Full Text] [PDF]