Influence of Nutrition on Vegetation Response to Carbon Dioxide. 1. Interactions of Nitrogen and Phosphorus Supply on Soybean Growth and Nutritional Parameters

摘要

The responses to elevated levels of atmospheric carbon dioxide (CO sub 2 ) of soybean as the classic example of the highly bred, rapidly growing agricultural species under adequate as well as growth-limiting levels of available phosphorus (P) and nitrogen (N) were studied. Our objective was to quantify nutrient uptake responses to elevated CO sub 2 as well as carbon acquisition and partitioning responses in a range of P and N availability, under carefully controlled conditions. This report summarizes preliminary findings from a growth study in which non-nodulating 'Lee' soybeans were grown to harvest maturity at 5 levels of N and five levels of P and at 350 and 700 ppM CO sub 2 . (ERA citation 12:002011)