title: Infectivity and efficacy of Glomus aggregatum and growth response of Cajanus cajan (L.) Millsp. in flyash amended sterile soil.
abstract: In the present investigation a pot culture experiment was conducted using sterile, phosphorus deficient soil to study the effect of flyash at 3 different concentrations (10g, 20g and 30g flyash/kg soil) on the infectivity and effectiveness of VAM fungus Glomus aggregatum in pigeonpea (Cajanus cajan (L.) Millsp.) cv Maruti. The flyash amendment in soil at all the 3 different concentrations was found to affect significantly the intensity of VAM fungal colonization inside the plant roots and also suppressed the formation of VAM fungal structure (vesicles and arbuscules) completely at higher concentration (30g flyash/kg soil). The response of the pigeonpea plants, as judged by their higher and dry weight, under the influence of flyash amendment in VAM fungus infested soils was found to be considerably less (though not significant enough) when compared to the control plants (without flyash) that have otherwise shown significant increase in growth over the plants without Glomus aggregatum inoculation. However, flyash amendment without VAM inoculation was also found to enhance the growth of plants as compared to control plants (without flyash and VAM inoculum).
authors.affiliation: Department of Botany, Gulbarga University, Gulbarga-585 106, India. rajkumarhg@rediffmail.com
authors.forename: Rajkumar H
authors.initials: RH
authors.lastname: Garampalli
authors.forename: Sunanda
authors.initials: S
authors.lastname: Deene
authors.forename: C Narayana
authors.initials: CN
authors.lastname: Reddy
mesh_terms: D000383:Agriculture / Q000379:methods*; D036561:Cajanus / Q000254:growth & development* / Q000382:microbiology; D002244:Carbon / Q000494:pharmacology* / Q000633:toxicity; D060729:Coal Ash; D004305:Dose-Response Relationship, Drug; D005658:Fungi / Q000187:drug effects* / Q000502:physiology*; D052638:Particulate Matter; D018517:Plant Roots / Q000382:microbiology*; D012987:Soil / Q000032:analysis*
chemical_list: D060729:Coal Ash; D052638:Particulate Matter; D012987:Soil; D002244:Carbon