Effects of Atmospheric CO(2) Enrichment on Photosynthesis, Respiration, and Growth of Sour Orange Trees.

Photosynthetic down-regulation over long-term CO2 enrichment in leaves of sour orange (Citrus aurantium) trees

• Understanding how trees are affected by a long-term increase in atmospheric CO 2 is crucial to understanding the future impact of global climate change. Measurements of photosynthetic characteristics were made in sour orange trees ( Citrus aurantium ) growing under an enhanced CO 2 atmosphere and N-replete soil for 14 yr to determine whether photosynthetic down-regulation had occurred. • Phot...

Seventeen years of carbon dioxide enrichment of sour orange trees: final results

The long-term responses of trees to elevated CO2 are especially crucial (1) to mitigating the rate of atmospheric CO2 increase, (2) to determining the character of future forested natural ecosystems and their spread across the landscape, and (3) to determining the productivity of future agricultural tree crops. Therefore, a long-term CO2-enrichment experiment on sour orange trees was started in...

Carbon dioxide and high temperature effects on growth of young orange trees in a humid, subtropical environment

Rising atmospheric carbon dioxide (CO2) concentration and global warming could impact growth of citrus trees. Five 2-year-old Ambersweet orange trees on Swingle citrumelo rootstocks were transplanted into soil containers in two temperature-gradient greenhouses on 9 August 1994 at Gainesville, FL, USA. Either 360 or 720 mmol (CO2) mol 1 (air) was maintained in the greenhouses. Two containers wer...

Interactions of herbicide and Fe on growth,minetal composition and physiology of sour lime and sour orange seedlings

Interactive effects of atmospheric carbon dioxide and leaf nitrogen concentration on canopy light use efficiency: a modeling analysis.

Potential increases in plant productivity in response to increasing atmospheric CO(2) concentration are likely to be constrained by nutrient limitations. However, the interactive effects of nitrogen nutrition and CO(2) concentration on growth are difficult to define because both factors affect several aspects of growth, including photosynthesis, respiration, and leaf area. By expressing growth ...