IDENTIFICATION OF BEAN GENOTYPES FROM TURKEY RESISTANCE TO COMMON BACTERIAL BLIGHT AND HALO BLIGHT DISEASES

WOS: 000328798800012Bean diseases caused by different pathogens reduce important yield and quality of beans in different bean growing regions in both Turkey and the other bean producing countries. In the present study, bacterial pathogens in the species of Pseudomonas savastanoi pv. phaseolicola (Burkholder) Garden et al. and Xanthomonas axonopodis pv. Phaseoli (Smith) Vauterin et al. causing economically important disease on bean plants growing in the commercial fields of Erzurum and Erzincan provinces located in the Eastern Anatolia region of Turkey has been isolated and identified. Totally thirty-six bean genotypes and two commercial cultivars commonly grown in the region have been screened for resistance to these pathogens both in greenhouse and field condition during 2001-2002. Disease severity in the field condition reduced seed quality and quantity of bean. Among the thirty-eight genotypes tested, only 36K was found to be resistant to both of the pathogens

BIOLOGICAL CONTROL OF ROOT ROT DISEASE CAUSED BY Rhizoctonia solani Kuhn ON POTATO AND BEAN USING ANTAGONIST BACTERIA

WOS: 000363405500003In this study the use of 73 bacteria, isolated from rhizosphere area of tea (Camellia sinensis) plants in Black Sea Region in Turkey, as potential biocontrol agent against root rot disease caused by Rhizoctonia solani that was known as an important disease on potato and bean plants in Turkey and in the world were investigated. In in vitro conditions, 73 bacteria used for antagonistic tests, and 15 out of 74 were found to be effective against R. solani and formed between 0.20-2.30 cm inhibition zone and inhibited mycelium development of the pathogen. In vivo pot experiment also showed that antagonist bacteria strains had various level inhibition effect (between 12% and 83%) on R. solani compared to control. The study revealed that biocontrol agents might play an essential role in management of root rot diseases in potato and bean

Integrated Use of Nitrogen Fertilization and Microbial Inoculation: Change in the Growth and Chemical Composition of White Cabbage

Field experiments were conducted to evaluate the impact of seed and seedling inoculation by plant growth promoting rhizobacteria (PGPR) on nitrogen use efficiency, growth, yield, and chemical composition of cabbage at varying levels of nitrogen (N). Data revealed that N alone or in combination with PGPR either as seed or seedling inoculation significantly improved growth, yield, and nutrients of cabbage. PGPR inoculations were more efficient than non-inoculated controls in terms of yield and yield parameters. This study showed that seed and seedling inoculation increased yield and yield parameters as well as chlorophyll reading value and stomatal conductance versus controls. Applications of mineral fertilizers with microbial applications save 25% of mineral fertilizers yet give 33% more yield versus full doses of mineral application without microbial applications. Both seed and seedling treatments increased the nitrogen use efficiency (NUE) rates by 45, 53, 58, 45, and 40%, and 49, 59, 68, 69, 60, and 55%, respectively. © 2016 Taylor & Francis