Browsing by Author "Erman, M"

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Effect of Phosphorus and Nitrogen Application and Rhizobium Inoculation on Yield and Nutrient Uptake in Sainfoin (Onobrychis Sativa)
(indian Counc Agricultural Res, 2005) Tufenkci, S; Erman, M; Sonmez, F
An experiment was conducted during 2002 and 2003 to determine the effects of phosphorus and nitrogen application and Rhizobium inoculation on yield and nutrient uptake in 'Erzincan' sainfoin (Onobrychis sativa L.), grown in Van, Turkey. Successive increase in nitrogen dose (40 to 80 kg/ha) significantly increased the plant height (90.3 cm in 2002 and 90.8 cm in 2003), fresh forage (1.48 and 1.47 tonnes/ha in 2002 and 2003 respectively) and hay yields (0.60 tonne/ha in 2002 and 2003) in both the years. The highest values were obtained from the 80 kg N/ha and above 80 kg N/ha the values of these parameters decreased. However, nitrogen (5.14 in 2002 and 5.42% in 2003), phosphorus (0.260 and 0.263% in 2002 and 2003) and potassium (11.64 and 11.75% in 2002 and 2003) contents in plant increased with the increasing dose of nitrogen and found maximum at 120 kg N/ha. An application of 39 kg P/ha significantly increased the plant height (87.4 and 87.5 cm in 2002 and 2003), fresh forage (1.44 tonnes/ha and 1.43 tonnes/ha in 2002 and 2003) and hay yields (0.57 and 0.58 tonnes/ha in 2002 and 2003). Moreover, application of phosphor-us increased the nitrogen(4.49 and 4.58% in 2002 and 2003), phosphorus (0.259 and 0.262% in 2002 and 2003) and potassium (11.02 and 11.03% in 2002 and 2003) contents in plant. Rhizobium inoculation also significantly increased all the investigated parameters over the control. The highest yield (1.58 tonnes/ha fresh forage and 0.64 tonnes/ha hay in 2002, 1.59 tonnes/ha fresh forage and 0.64 tonnes/ha hay in 2003) were obtained from the application of 80 kg N/ha + 30 kg P/ha + Rhizobium inoculation. However, highest nutrient contents were obtained from the application of 120 kg N/ha + 39 kg P/ha + Rhizobium inoculation.
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 Cultivars and Insecticides on Sitonid Weevil, Sitona Crinitus (Coleoptera: Curculionidae), and on Yield, Yield Components and Nodulation of Lentil (Lens Culinaris)
(indian Counc Agricultural Res, 2005) Erman, M; Yardim, EN; Kulaz, H
An experiment was conducted during 2001 and 2002 to determine the effectiveness of different insecticides against sitonid weevil [Sitona crinitus (Herbst.)] (Coleoptera : Curculionidae) on 2 cultivars ('Sazak 91' and 'Yerli Kirmizi') of lentil (Lens culinaris Medikus). Yield, yield components and number of nodules fed by larvae were compared between the 2 cultivars as well as among insecticide treatments. Insecticides applied were chlorpyriphos (720 g ai/ha), malathion (1 300 g ai/ha) and a systemic insecticide, oxydemeton methyl (265 g ai/ha). Application of oxydemeton methyl decreased the damage on nodules by 52.6 and 41.2% in 2001 and 2002, respectively, resulting in seed yield increase (729 and 1 461.6 kg/ha in 2001 and 2002), biological yield (1 825.5 kg/ha and 3 521.6 kg/ha), pods/plant (23.8 and 25.7), 1 000-seed weight (47.7 and 48.4 g), plant height (26.1 cm and 30.0 cm), branches/plant (7.3 and 8.9), root dry weight/plant (0.136 g and 0.106 g) and shoot dry weight/plant (0.859 g and 1.056 g) over the control treatment. 'Yerli Kirmizi' cultivar showed less nodules fed (0:8 and 1.9 respectively) by the sitonid pest and gave higher seed yield (712.6 and 1 393.3 kg/ha than 'Sazak 91 (537.4 and 1 301.3 kg/ha) in 2001 and 2002 respectively.
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.