tailieunhanh - Effect of Ditylenchus dipsaci Kühn, 1857 (Tylenchida: Anguinidae) on onion yield in Karaman Province, Turkey

This study was conducted to investigate the effect of the stem and bulb nematode Ditylenchus dipsaci Kühn (Tylenchida: Anguinidae) on yield parameters of some onion varieties in Karaman Province, Turkey. Experiments were established in a naturally infested onion field during two consecutive years (2012–2013). | Turkish Journal of Agriculture and Forestry Research Article Turk J Agric For (2015) 39: 227-233 © TÜBİTAK doi: Effect of Ditylenchus dipsaci Kühn, 1857 (Tylenchida: Anguinidae) on onion yield in Karaman Province, Turkey 1, 1 2 3 Elif YAVUZASLANOĞLU *, Abdullah DİKİCİ , İbrahim Halil ELEKCİOĞLU Department of Plant and Animal Production, Technical Sciences Vocational School, Karamanoğlu Mehmetbey University, Karaman, Turkey 2 Institute of Science, Karamanoğlu Mehmetbey University, Karaman, Turkey 3 Department of Plant Protection, Faculty of Agriculture, Çukurova University, Adana, Turkey Received: Accepted: Published Online: Printed: Abstract: This study was conducted to investigate the effect of the stem and bulb nematode Ditylenchus dipsaci Kühn (Tylenchida: Anguinidae) on yield parameters of some onion varieties in Karaman Province, Turkey. Experiments were established in a naturally infested onion field during two consecutive years (2012–2013). Nematode population development was followed at the beginning and end of the experiment. The reproduction rate was also calculated. Onion yield and the representative average diameter and length of the onion cultivar bulbs were determined. Yield parameters of six onion varieties were compared on nematicide-treated and untreated control plots in the experiments. Nematode populations significantly decreased in the nematicide-treated plots at the beginning of the experiment during both growing seasons. The average population density of D. dipsaci was 104 individuals/100 g dry soil in the first year and 68 individuals/100 g dry soil in the second year of the experiment. The initial and final nematode populations were significantly positively correlated with Betapanko, Pan88, and Local variety1 cultivars, whereas they were negatively correlated with the Valenciana cultivar during the first year. This suggests

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• Onion yield
• Stem and bulb nematode
• Onion varieties in Karaman Province
• Naturally infested onion
• Plant parasitic
• Planting density
• Inorganic fertilizers
• Growth and yield of onion
• Yield of onion
• Major factors constraining onion production
• Pre and post emeregence herbicide
• Cost economics
• Yield attributes and yield of onion
• Post emergence herbicides against weeds
• Allium cepa
• Utilization of onion
• Kharif onion genotypes
• Kharif onion genotypes for growth
• Utilization of Kharif onion genotypes
• Kharif onion
• Plant growth hormone
• Growth and yield of Kharif onion
• Kharif onion (Allium cepa L
• Transplanting dates
• Sources and graded levels
• Sulphur on growth
• Yield of bellary onion
• Bellary onion (Allium cepa L
• Yield attributes and yield
• Short day CMS onion hybrids
• Bulb dimension
• Moisture content
• CMS based onion hybrids
• Related traits in CMS based onion
• Heterosis studies for yield
• Climatic variability
• Onion (Allium cepa L
• Seed yield
• Seed yield of onion
• Mid hills
• Impact of climate variability
• Small onion
• Phenotypic and genotypic correlation
• Path coefficient
• Yield associated traits in small onion
• Path coefficient analysis
• Organic manures
• Quality of onion
• Different organic manures
• Organic manures on yield
• Growth parameters
• Soil properties
• Bulb yield
• Onion (Allium cepa L )
• Sulphur on the soil properties
• Vegetative growth
• Salicylic acid
• Rahuri during the rabi season
• Nutrient uptake
• Economic return of onion
• Levels differential response on yield
• Sulphur sources
• Foliar application
• Rabi onion (Allium cepa L
• Bulb yield attributes of rabi onion
• Micronutrient application
• Zinc and boron on growth
• Yield and quality
• Onion (Allium cepa L ) cv agrifound dark red
• Boron on growth
• Irrigation regime
• IW: CPE
• Water use efficiency etc
• Bulb yield and quality of onion
• Varieties on growth
• Growth and instability
• Production of onion
• Instability in area
• Growth in area
• Growth and yield
• Integrated nutrient management
• Integrated nutrient management on growth
• Yield attributes of onion
• Yield attributes
• Response of onion to applied potassium
• Onion to applied potassium
• Farmer’s scale field
• Bulb formation in onion
• Pant growth regulators
• Quality attributes of onion
• Growth of onion
• Plant growth regulators
• Performance of nutrients of onion
• Customized fertilizer
• NPK uptake
• Micronutrient uptake
• Yield and nutrient uptake of onion
• Nutrient uptake of onion
• Impact of micronutrients
• Micronutrients in relation to growth
• Relation to growth
• Soil fertility
• Physiological weight loss
• Residual fertility status of soil
• Inorganic source
• Yield attributing characters
• Gibberellic acid
• Methods of application
• Pruning and gibberellic acid
• Agrifond light red
• Planted in a plot