Browsing by Author "Levent, R"

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Comparison of Some Winter Lentil Cultivars in Weed-Crop Competition
(Elsevier Sci Ltd, 2005) Tepe, I; Erman, M; Yazlik, A; Levent, R; Ipek, K
The differential competitive ability of six winter lentil (Lens culinaris Medik.) cultivars and the traits that may confer such attributes was investigated in the presence or absence of weeds in a naturally occurring weed flora during 1997-1999 in Van, Turkey. For this purpose, six different winter lentil cultivars were used. The differences among the cultivars were not significant for weed densities and general coverage areas in 1998 and 1999. Weedy plots showed significant losses of yield depending on the cultivars, compared with weed-free plots. The lowest yield loss due to weeds were found in the varieties Yesil 21, Pul 11 and Sazak 91 in the first year; Kirmizi 5 1, Pul 11 and Kayi 91 in the second year of trials. These results suggest that the variety Pul 11 was the most competitive cultivar whereas Yerli Kirmizi was the least competitive. However, none of the varieties were really effective as a 'stand-alone' component for weed control in lentils. (c) 2004 Elsevier Ltd. All rights reserved.
Effect of Weed Control Treatments on Weeds, Seed Yield, Yield Components and Nodulation in Winter Lentil
(Wiley, 2004) Erman, M; Tepe, I; Yazlik, A; Levent, R; Ipek, K
Good weed control is critical in winter lentil production. This study was conducted on the lentil cultivar Sazak 91 during the winter seasons of 1997-98 and 1998-99 to determine the most appropriate method for controlling weeds. Hand weeding (weed-free control), weedy control (inoculated), weedy control (uninoculated), hand hoeing once, hand hoeing twice, trifluralin, imazethapyr, linuron, prometryn, phenmedipham + desmedipham, trifluralin + hand hoeing and linuron + hand hoeing treatments were evaluated and the effects of herbicides on nodulation in lentil were investigated. In the first year Convolvulus arvensis, Centaurea balsamita, Ranunculus arvensis, Cephalaria syriaca and Lathyrus spp., dominated whereas in the second year Hordeum vulgare, Adonis aestivalis and Centaurea depressa were the dominant weed species in the plots. Prometryn, hand hoeing, linuron and a combination of linuron + hand hoeing were found to be the most effective for control of weeds, resulting in the highest yield in winter lentil throughout the investigation. Trifluralin and imazethapyr had a phytotoxic effect on the lentil plants. None of the weed control treatments had any adverse effects on nodulation and Rhizobium leguminosarum inoculation was not found to have any effect on the competitive ability of the lentil plants.