New Zealand Journal of Agricultural Research abstracts

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Effects of phosphorus fertilisation and harvesting stages on forage yield and quality of narbon vetch

Mevlüt Türk^*

Sebahattin Albayrak

Osman Yüksel

Süleyman Demirel University
Faculty of Agriculture
Department of Field Crops
Isparta, Turkey

^*Author for correspondence: mturk72@ziraat.sdu.edu.tr

Abstract    The effects of five different phosphorus rates (0, 30, 60, 90 and 120 kg ha⁻¹) and three different harvesting stages (beginning of flowering, full flowering, and seed filling) on forage yield and quality of narbon vetch (Vicia narbonensis L.) were evaluated under the Mediterranean conditions of Turkey in 2005 and 2006 growing seasons. Dry matter (DM) yield, crude protein (CP), N, P, K, Mn, Cu, Fe, Zn, Ca, Mg, acid detergent fibre (ADF) and neutral detergent fibre (NDF) were determined. Phosphorus rates and harvesting stages significantly affected most of the quality components determined in narbon vetch. Phosphorus applications increased DM yield, CP, N, P, Ca and Mg contents, decreased K, Fe, ADF and NDF, and had no effect on Mn, Cu and Zn. Harvesting at the late stages caused a reduction in forage quality. Crude protein, N, P, K, Cu, Zn and Mg contents decreased with advancing stages, while Ca, ADF and NDF contents increased.

Keywords    acid detergent fibre; crude protein; dry matter; narbon vetch; neutral detergent fibre

A07010; Online publication date 15 October 2007; Received 31 January 2007; accepted 13 July 2007

New Zealand Journal of Agricultural Research, 2007, Vol. 50: 457–462
0028–8233/07/5004–0457 © The Royal Society of New Zealand 2007

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