title: Effect of fly ash deposition on photosynthesis, growth and yield of rice.
abstract: An experiment was conducted to assess the effect of fly ash deposition without and with (0.25, 0.50, 1.0 and 1.5 g m(-2 )day(-1)) foliar dusting on the photosynthesis, stomatal conductance, transpiration, leaf temperature, albedo and productivity of rice. Dusting of 0.5 g m(-2 )day(-1) fly ash and above significantly reduced the photosynthesis, stomatal conductance, transpiration and albedo. Panicle initiation and flowering stages were more influenced by the fly ash deposition as compared to active tillering stage. At higher rates of fly ash deposition, all growth and yield parameters were significantly influenced due to increased heat load and reduced intercellular CO2 concentration. A significant reduction of 12.3, 15.7 and 20.2 % in grain yield was recorded over control when fly ash was dusted at 0.5, 1.0 and 1.5 g m(-2 )day(-1), respectively.
authors.affiliation: Central Rice Research Institute, Cuttack, 753 006, Odisha, India.
authors.forename: R
authors.initials: R
authors.lastname: Raja
authors.forename: A K
authors.initials: AK
authors.lastname: Nayak
authors.forename: K S
authors.initials: KS
authors.lastname: Rao
authors.forename: Chandrika
authors.initials: C
authors.lastname: Puree
authors.forename: Mohammad
authors.initials: M
authors.lastname: Shahid
authors.forename: B B
authors.initials: BB
authors.lastname: Panda
authors.forename: Anjani
authors.initials: A
authors.lastname: Kumar
authors.forename: R
authors.initials: R
authors.lastname: Tripathi
authors.forename: P
authors.initials: P
authors.lastname: Bhattacharyya
authors.forename: M J
authors.initials: MJ
authors.lastname: Baig
authors.forename: B
authors.initials: B
authors.lastname: Lal
authors.forename: Sangita
authors.initials: S
authors.lastname: Mohanty
authors.forename: Priyanka
authors.initials: P
authors.lastname: Gautam
mesh_terms: D060729:Coal Ash / Q000633:toxicity*; D004785:Environmental Pollutants / Q000633:toxicity*; D012275:Oryza / Q000187:drug effects* / Q000254:growth & development; D010788:Photosynthesis / Q000187:drug effects*; D018515:Plant Leaves / Q000187:drug effects / Q000254:growth & development; D018526:Plant Transpiration / Q000187:drug effects; D013696:Temperature
chemical_list: D060729:Coal Ash; D004785:Environmental Pollutants