Vol. 10, Issue 12 (2021)

Author(s):
Sajan Singh, Vinay Samadhiya, Mohhammad Shahid, Ipsita Pattanaik, Himanshi Verma, Rakesh Paul, Deepika Sahu, Nainsi Naya, Chandrabhooshan Singh and Biplab Choudhari

Abstract:
Carbon dioxide (CO₂) in the atmosphere is rapidly rising year by year. Growth stimulation of plants at elevated CO₂ will have a greater demand for nutrient to sustain their faster growth. The present investigation entitled “Effect of Elevated Carbon Dioxide Concentration on Phosphorus Dynamics under Low Land Rice (Variety - Naveen) in Odisha” was conducted in the institute research farm of ICAR-NRRI Cuttack (Odisha) during the Kharif season of 2016. The test variety taken was “Naveen” which was transplanted in the pots of OTC on 5th August 2016 and harvested on 8th November 2016. Langmuir isotherm predicted that maximum bonding energy (k) was found under ambient condition i.e., (0.155 L mg-¹) and minimum value was found under 700 ppm CO₂ concentration i.e., (0.112 L mg-¹) it also showed Langmuir adsorption maxima (b) value is maximum in ambient condition i.e., (454.5 mg P kg-¹) and minimum value was found under 700 ppm concentration i.e., (370.4 mg P kg-¹). Phosphorus desorption was analyzed and it was found that higher amount of desorption of “P” was found in C3P2 treatment given and lowest was found in C1P0 treatment given.