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Journal of the Australian Rangeland Society
RESEARCH ARTICLE

The effect of bovine saliva on growth attributes and forage quality of two contrasting cool season perennial grasses grown in three soils of different fertility

M. Kerim Gullap A , H. Ibrahim Erkovan B and Ali Koc B C
+ Author Affiliations
- Author Affiliations

A Narman Vocational High School, University of Ataturk, Narman, Erzurum, Turkey.

B Department of Field Crops, Faculty of Agriculture, University of Ataturk, Erzurum, Turkey.

C Corresponding author. Email: akoc@atauni.edu.tr

The Rangeland Journal 33(3) 307-313 https://doi.org/10.1071/RJ10063
Submitted: 18 October 2010  Accepted: 11 August 2011   Published: 9 September 2011

Abstract

The aim of this study was to determine the response of Dactylis glomerata L. (Orchardgrass) and Festuca ovina L. (Sheep fescue), to bovine saliva application in a loamy soil (most fertile), a sandy loam and a sandy soil (least fertile). The effects of cutting and cutting + saliva on relative height growth rate (RHGR), above- and belowground biomass and forage quality attributes [crude protein, NDF (neutral detergent fibre) and ADF (acid detergent fibre)] were investigated. The results showed that the cutting and cutting + saliva treatments resulted in greater RHGR than the control, but only with D. glomerata in the sandy soil did the application of saliva increase the RHGR. However, saliva applied after cutting increased the aboveground biomass averaged over all species and all three soils. Saliva applied to D. glomerata increased the belowground biomass in the sandy loam and sandy soils but decreased it in F. ovina in the sandy soil. The application of saliva had no effect on the crude protein or the NDF content of either species in any of the soils. On the other hand, the application of saliva after clipping increased the ADF of F. ovina but decreased that of D. glomerata averaged over all three soils. Averaged over both species, the ADF was increased by the addition of saliva in the sandy soil, had no significant effect in the sandy loam (P > 0.05) and was slightly increased in the loam.

Additional keywords: above- and belowground biomass, clipping, plant, soil texture.


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