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Showing 4 results for Rhizoctonia

Bita Naseri,
Volume 5, Issue 2 (8-2016)
Abstract

Naseri  B. 2016. Integrated  management of Rhizoctonia root rot of bean. Plant Pathology Science 5(2):42-51.

Rhizoctonia root rot caused by Rhizoctonia solani Kühn seriously reduces bean yield. Restricting wide distribution of the disease in main bean growing regions requires identification of factors effect on the disease occurrence and prevalence. Due to the lack of resistant cultivars and ineffective chemical control measures, cultural practice management plays an important role in disease control. According to the findings, increasing soil organic matter, improving rhizoobial nodule formation on root, not planting beans in sandy soils, maintaining nuteral pH of field soil, following 7-9 days irrigation interval throughout growing season, planting standard density of 30 plants per square meter, seeding at less than five cm depth under warm and dry climatic conditions, using sprinkler irrigation, growing red bean in infected fields, appropriate rotation program, applying maximum 50 kg/ha urea, weed control, and seed treatment with proper systemic fungicide should be considered in an integrated management program.


Samaneh Samavat,
Volume 6, Issue 2 (9-2017)
Abstract

Biological control of Rhizoctonia damping-off disease. Plant Pathology Science 6(2):55-67.

Damping-off caused by Rhizoctonia solani J. G. Kühn is a very important plant disease among soil-borne diseases that make severe damages on a wide range of plants in the world. Biological control of this disease with Trichoderma, Gliocladium, Bacillus, Pseudomonas and Rhizobium species has been reported as a successful management method. The results of some researches on this area and the mechanisms of the effect of these antagonistic fungi and bacteria are described here.
 
Dorna Forghani, Eidi Bazgir, Mehdi Nasr Esfahani, Mostafa Darvishnia,
Volume 9, Issue 2 (8-2020)
Abstract

Forghani D, Bazgir E, Nasr Esfahani M, Darvishnia M (2020) Pathogenicity severity of  Iranian isolates of Rhizoctonia solani  in Burren potato cultivar. Plant Pathology Science 9(2):63-72.            DOI: 10.2982/PPS.9.2.63.
 
Introduction: Rhizoctonia solani Kühn is a soil borne fungus that causes stem canker and black scurf and severely damages crop in various potato growing areas in Iran. The aim of this study was to investigate the pathogenicity of various fungal isolates from different potato growing areas in Iran on the Burren cultivar. Material and Methods: In this study, The pathogenicity of 70 isolates of Rhizoctonia solani from major potato growing areas in Iran including the provinces of Ardabil, Isfahan, Fars, Kurdistan, Kerman, Lorestan and Hamedan was investigated on the potato cultivar ‘Burren’ in completely randomized design experiment under greenhouse conditions. Results: The analysis of variance showed that the pathogenicity of the isolates was very different at probability level of 1% is significant, and therefore they were divided into different groups. Conclusions: The isolates of Ardabil-1, Ardabil-5, Isfahan-14, Fars-26, Fars-29, Kurdistan-34, Kurdistan-39, Kurdistan-40, Kerman-47 and Hamedan-66 had the highest pathogenicity, while the  isolates Fars-21, Isfahan-20, Hamedan-65 and Isfahan-18 showed the lowest pathogenicity, respectively.

Mrs. Mahsa Samiee, Mahdi Davari,
Volume 9, Issue 2 (8-2020)
Abstract

Samiee M, Davari M (2020) Important diseases of turf in Iran. Plant Pathology Science 9(2):119-128.        DOI: 10.2982/PPS.9.2.119.

Turf grass is the most important grown plant in urban green space, which functions such as temperature adjustment, increase in relative humidity, air softness and dust absorption. Fungal and fungal-like diseases are the most common lawn diseases in Iran, affecting this plant at all stages of growth, causing its decline. Pythium, Fusarium, Microdochium, Rhizoctonia, Bipolaris, Pyricularia and Colletotrichum species are known as damping-off, root and crown rot, leaf spot and anthracnose pathogens of lawns in Iran. The symptoms of these diseases, the morphological characteristics of pathogens and the methods for their management are described.

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