tailieunhanh - Standardization of isolation methodology for early detection and estimation of major hot spots of Dematophora Necatrix, causing white root rot of apple in himachal pradesh

White root rot caused by Dematophora necatrix is one of the most destructive soil borne diseases of apple in Himachal Pradesh. To identify the major hot spots of white root rot and to standardize the methodology for isolating D. necatrix, a survey was undertaken in three major apple growing districts viz., Kullu, Shimla and Kinnaur of Himachal Pradesh. Soil samples were collected from three most infected areas of each district. Three baits viz., kiwi leaf discs, apple leaf discs and avocado leaf discs were used separately to modify this technique followed by microscopic examination of infected baits. The results showed that in all infected soil samples collected from most infected sites of three districts, baits of kiwi leaf discs exhibited maximum infection () of D. necatrix followed by avocado () and apple leaf discs (). On the other hand, maximum infection of baits was observed in Ghoond area () of district Shimla by using avocado leaf discs followed by Bhalyani area () of district Kullu by using baits of kiwi. Whereas, minimum bait infection was recorded in Sangla area () of district Kinnaur with apple leaf discs. Overall, the maximum mean infection () was observed in Kilba area of district Kinnaur followed by Ghoond () area of district Shimla and Bhalyani () area of district Kullu. However, least mean bait infection () was recorded in Sangla area of district Kinnaur. Therefore, keeping in view the importance of this disease, present investigation was carried out with the objective to standardize the isolation technique for quick detection and to find out the major hot spots infested by this disease. | Standardization of isolation methodology for early detection and estimation of major hot spots of Dematophora Necatrix, causing white root rot of apple in himachal pradesh

• Sinh học
• Root rot
• Leaf discs
• Microscopic examination
• Himachal pradesh
• Dematophora Necatrix
• Collar rot
• Followed by stem rot
• Root rot and disease incidence
• Groundnut in parts
• Survey of collar rot
• Neem oil
• Rhizoctonia root rot
• Effect of fungicides
• Neem oil on the rhizoctonia root rot
• Rhizoctonia root rot of soybean
• Dry root rot
• Sweet orange
• Dry root rot of sweet orange
• Average incidence
• Dry root rot (Fusarium solani)
• Macrophomina phaseolina
• Root rot (Macrophomina phaseolina)
• Soybean in in vitro
• Fertilizers against root rot
• Different agrochemicals
• Stem and root rot
• Morphological variability
• Root rot of sesame
• Screening of groundnut varieties
• Germplasm against collar rot
• Dry root rot diseases
• Rhizoctonia bataticola
• Sick plot condition at MARS
• Rhizoctonia solani
• Botanicals against rhizoctonia solani
• Root rot in soybean
• In vitro evaluation
• Cultural media
• M phaseolina
• Castor root rot
• Media and temperature
• Growth and sclerotial formation
• Root rot of castor
• Disease management capsule
• Integrated disease management capsule
• Wilt root rot complex of chili
• Root rot complex of chili
• Suitable fungicides
• Antagonistic activity
• Biocontrol agents against
• Dry root rot in chickpea
• Stem and root rot of sesame
• Sesamum indicum L
• Integrated management
• Fusarium solani
• Bio efficacy
• Phytotoxicity of thiophenate methyl 450g l
• Against dry root rot of chickpea
• Dry root rot of chickpea
• Untreated control
• Resistant varieties
• Diseases incidence
• Causing root rot disease
• Physiological requirement
• Nutritional and physiological requirement
• Disease incidence
• Rhizoctonia bataticola in parts
• Carbendazim and Trichoderma
• Dry root rot of blackgram
• Cicer arietinum
• Chickpea (Cicer arietinum L )
• Glycine max
• Dry root rot of soybean
• Bioefficacy of various fungicides
• Pathogenicity of root rot incidence
• Cowpea in selected districts
• Tamilnadu caused
• Macrophomina phaseolina (Tassi ) Goid
• R bataticola
• Rhizoctonia bataticola isolates
• Cultural and genetic diversity
• Bael (Aegle marmelos Correa)
• Inciting root rot disease
• Botanicals against fusarium solani
• Organic amendments
• Organic amendments against
• Root rot of safflower
• In vitro bio efficacy
• Root and collar rot
• SDS PAGE
• Macrophomina phaseolina (Tassi) goid
• Okra genotypes resistant to root
• Collar rot incited
• Stem and root rot disease
• Integrated strategy for management of stem
• Root rot disease of sesame
• Macrophomina phaseolina goid