Chakrabarti, B., Singh, S.D.,
Bhatia, A., Kumar, V. and Harit, R.C.
2020
Yield and nitrogen uptake
in wheat and chickpea grown
under elevated carbon dioxide level.
National Academy Science Letters 43: 109-113.
Full Summary Here:
http://www.co2science.org/articles/V23/aug/a11.php
My Short Summary:
Chakrabarti et al. (2020) set out to quantify the impacts of elevated atmospheric CO2 on wheat (Triticum aestivum) and chickpea (Cicer arietinum), under ambient (390 ppm) or elevated (550 ppm) CO2 levels.
Wheat grain yields increased by 15.1% and 16.7% in the 1st and 2nd growing seasons. For chickpeas, seed yields increased by 21.1% and 21.9%. The five scientists conclude"increased atmospheric CO2 will increase the yield of C3 crops like wheat and chickpea."
Figure 1.
Impact of elevated CO2 on wheat grain (left side) and chickpea seed (right side) yields in two consecutive growing seasons. Red text indicates the percentage increase due to elevated CO2 in each growing season for each crop, which increases are all significant at the p ≤ 0.05 level. Error bars indicate standard deviations.