Abstract
Abstract. Field experiments to understand the effect of elevated CO2 and the consequence of rising atmospheric temperature on wheat production is felt necessary to develop suitable adaptations. The objective of this study was to investigate the effect of CO2 enrichment in combination with varying nitrogen management on yield of wheat in sub-tropical India. Wheat crop was grown inside open top chambers with ambient CO2 (380 ppm) and elevated CO2 (50% higher than ambient) environment under four N management in dry season of 2014-15 at Kharagpur, India. The N treatments were application of N at normal recommendation [N100(CF), i.e. 120 kg/ha], 50% higher than N100(CF), and SPAD-based management using chemical fertilizer (CF) and integration of CF with organics in the highest dose (180 kg/ha). With the elevation of CO2 environment, the grain yield was increased by 11 to 26% and straw yield by 23 to 29%. The maximum increase was noted in high N dose management. This indicated that wheat crop can be benefited under elevated CO2 environment with higher level of N fertilizer application in sub-tropical India.
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Claims 4
Claim · model-written summary
Elevated CO2 increased wheat grain yield by 11 to 26%
- Taxon
- wheat
Triticum aestivume0 - Treatment
- elevation of CO2 environmente2
- Outcome
- grain yielde2
- Direction
- increasede2
- Value
- 11 to 26%e2
- Comparator
- ambient CO2e1
- Setting
- Kharagpur, Indiae1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“on yield of wheat in sub-tropical India”
e1“Wheat crop was grown inside open top chambers with ambient CO2 (380 ppm) and elevated CO2 (50% higher than ambient) environment under four N management in dry season of 2014-15 at Kharagpur, India”
e2“With the elevation of CO2 environment, the grain yield was increased by 11 to 26% and straw yield by 23 to 29%”
Claim · model-written summary
Elevated CO2 increased wheat straw yield by 23 to 29%
- Taxon
- wheatTriticum aestivume0
- Treatment
- elevation of CO2 environmente2
- Outcome
- straw yielde2
- Direction
- increasede2
- Value
- 23 to 29%e2
- Comparator
- ambient CO2e1
- Setting
- Kharagpur, Indiae1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“on yield of wheat in sub-tropical India”
e1“Wheat crop was grown inside open top chambers with ambient CO2 (380 ppm) and elevated CO2 (50% higher than ambient) environment under four N management in dry season of 2014-15 at Kharagpur, India”
e2“With the elevation of CO2 environment, the grain yield was increased by 11 to 26% and straw yield by 23 to 29%”
Claim · model-written summary
The maximum increase in wheat yield was under the high N dose management
- Taxon
- wheatTriticum aestivume0
- Treatment
- high N dose managemente3
- Outcome
- increasee3
- Direction
- maximume3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“on yield of wheat in sub-tropical India”
e3“The maximum increase was noted in high N dose management”
Claim · model-written summary
Wheat can benefit from elevated CO2 when combined with a higher level of N fertilizer application
- Taxon
- wheatTriticum aestivume4
- Outcome
- higher level of N fertilizer applicatione4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“This indicated that wheat crop can be benefited under elevated CO2 environment with higher level of N fertilizer application in sub-tropical India”
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