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ARS Home » Northeast Area » Beltsville, Maryland (BARC) » Beltsville Agricultural Research Center » Adaptive Cropping Systems Laboratory » Research » Publications at this Location » Publication #280487
Title: Interactions between phosphorus deficiency and CO2 fertilization on cotton

Author
item BADGUJAR, GIRISH - Asian Institute Of Technology
item SINGH, SHARDENDU - University Of Maryland Eastern Shore (UMES)
item Reddy, Vangimalla
item Fleisher, David
item Timlin, Dennis

Submitted to: Meeting Proceedings
Publication Type: Proceedings
Publication Acceptance Date: 4/13/2012
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Phosphorus (P) deficiency in acidic soils is a major limiting factor for crop production worldwide. A growth chamber experiment was conducted to study the limiting effect of P deficiency on cotton growth and photosynthesis (Pnet) on current and projected atmospheric carbon dioxide (CO2) concentrations. Irrespective of CO2 fertilization, P deficiency decreased total plant biomass by decreasing plant height, leaf area, mainstem node number and Pnet. The beneficial effects of CO2 fertilization on these parameters were minimal in P deficient plants. The study suggests that P deficiency will have major impact on cotton growth even under CO2 enriched environments of the future.