Journal of Environmental Biology

The effects of walnut and pine leaves on bread wheat growth and frequence of common weed species in the East-Mediterranean region

 

Aydin Akkaya, Tevrican Dokuyucu, Rukiye Kara^? and Ziya Dumlupinar

KSU, Agricultural Faculty, Field Crops Department, 46060, Kahramanmaras, Turkey

 

(Received: 29 June, 2005 ; Accepted: 26 December, 2005)

 

Abstract: A field experiment was carried out to determine the effects of? walnut (Juglans regia L.) and pine (Pinus sp.) leaves on bread wheat (Triticum aestivum L.) growth and weed control, during 2001-02 and 2002-03 growing seasons in East Mediterranean region of Turkey.? In this research, the treatments were: applications of ground walnut leaves (GWL) and ground pine leaves (GPL) at 19 g/m² dose at Zadoks-11, applications of 200, 400 and 800 cc/m² of walnut leaves extract (WLE2, WLE4 and WLE8 respectively), pine leaves extract (PLE2, PLE4 and PLE8 respectively), mixture extract of 200 cc walnut and 200cc pine (ME), herbicide application (HA) at 8 g/m² dose at Zadoks-21, and control (C) without any treatment. The results have indicated that the effects of treatments were significant for grain yield (GY), plant height (PH), flag leaf length (FLL), weed number per square meter (WN), but non significant for grain number per head (GN), grain weight per head (GW), 1000 grain weight (1000 GW), flag leaf width (FLW), head number per square meter (HN), vegetative period (VP), grain filling period (GFP) and days to maturity (DM).?

 

Key words: Allelopathy, Walnut, Pine, Extracts, Wheat, Yield, Yield components, Weed number.

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