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Response of Soybeans to a Carbon Dioxide‐Enriched Atmosphere 1
Author(s) -
Cooper R. L.,
Brun W. A.
Publication year - 1967
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1967.0011183x000700050014x
Subject(s) - seedling , carbon dioxide , biology , atmosphere (unit) , yield (engineering) , horticulture , maturity (psychological) , greenhouse , carbon dioxide in earth's atmosphere , agronomy , botany , psychology , ecology , developmental psychology , physics , materials science , metallurgy , thermodynamics
Two soybean varieties were exposed to 350 and 1350 ppm CO 2 from seedling to maturity in Mylar chambers in the greenhouse. There was a marked increase in plant growth in the CO 2 atmosphere at a concentration of 1350 ppm. Seed yields were increased 57% in the variety ‘Hark’ and 40% in the variety ‘Chippewa‐64’. The increase in seed yield was primarily due to an increase in the number of pods per plant. Many of the new pods were born on the longer branches in the CO 2 enriched atmosphere.