2015, VOLUME 2 ISSUE 2Pages: 134-142
Effect of fluoride contaminated irrigation water on Eco-physiology, biomass and yield in Gossypium hirsutum L.
Sanjay Kumar and Munna Singh*
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The study was conducted to assess the response of a cash crop Gossypium hirsutum L. to the irrigation of fluoride (F) contaminated water. Different concentrations of F i.e. 100, 200, 500 and 1000 ppm were used to study the effects of these concentrations of this element on CO2 assimilation, stomatal conductance, chlorophyll fluorescence, biomass and yield of G. hirsutum. Photosynthesis (PN), stomatal conductance (gs), chlorophyll fluorescence (Fv/Fm), plant growth and biomass accumulation in terms of fresh and dry weight were decreased significantly with the application of F. The results were concentration dependent. However, a significant increase in harvest index was noticed even at 200 ppm concentration of F. There was no any significant phytotoxic effect noticed on morphology of plant in terms of necrosis, tip burning and curling of leaf. Moreover, the parameters studied were decreased but the crop yield was increased slightly cultivated with the application of F contaminated water, the studied cultivar of this crop may be recommended for the cultivation in the fluoride contaminated zones.
Fig.: Effect of fluoride contaminated irrigation water on Eco-physiology, biomass and yield in Gossypium hirsutum L.