The Effect of Seasonal Variations, Covariations with Minerals and Forage Value on Itchgrass’ Foliar Silicification from Sudanian Benin

Silica (SiO 2 ) in forage grasses has been found in reducing cell-wall digestibility. This study investigates whether: (i) the seasonal variability affects the silica and minerals accumulation and forage values of leaves of R. cochinchinensis and (ii) silica concentration is correlated with minerals...

Full description

Saved in:
Bibliographic Details
Published in:SILICON 2016-10, Vol.8 (4), p.487-496
Main Authors: Kindomihou, Valentin Missiakô, Sinsin, Brice, Holou, Roland A Y, Ambouta, Karimou J-M, Gruber, Wolf, Adjolohoun, Sébastien, Houinato, Marcel, Herbauts, Jacques, Lejoly, Jean, Meerts, Pierre
Format: Article
Language:English
Subjects:
Accumulation
Ashes
Biosphere
Calcium
Chemistry
Chemistry and Materials Science
Environmental Chemistry
Forage
Inorganic Chemistry
Lasers
Leaves
Materials Science
Minerals
Nitrogen
Nutrients
Optical Devices
Optics
Original Paper
Photonics
Polymer Sciences
Seasonal variations
Silicon dioxide
Statistical analysis
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Silica (SiO 2 ) in forage grasses has been found in reducing cell-wall digestibility. This study investigates whether: (i) the seasonal variability affects the silica and minerals accumulation and forage values of leaves of R. cochinchinensis and (ii) silica concentration is correlated with minerals and fodder value. In an itchgrass population selected in the W Biosphere Reserve, leaves were collected on 90 marked plants from May to October 2003 and 2004, at 15 days intervals except May, June and October. Some 300 g of fresh blades from the 3 rd most recently expanded leaves were oven dried and analyzed for dry mass, SiO 2 , ash, N, Na, Ca, P, K, and Mg. Digestible Nitrogen Matter (DNM) and Fodder Energetic Value (FEV) were calculated using the Demarquilly formula. Apart from SiO 2 , ash and forage value, data were log-transformed to restore homoscedasticity before statistical analyses. SiO 2 ranges from 5.69 % to 9.95 %, i.e. varying 1.4 fold between May and October, reaching 1.75 fold at mid-September. SiO 2 is positively related to Ca but negatively to K, P, N, DNM and FEV. The negative correlations suggest that SiO 2 concentration in R. cochinchinensis could be reduced with a significant increase in energy and accumulation of important nutrients such as N, P and K. Therefore, leaf silicification and nutritive value relationship should be conclusive in the case of itchgrass.
ISSN:1876-990X
1876-9918
DOI:10.1007/s12633-015-9355-y