| Main Title |
Water Use Efficiency in Plant Growth and Ambient Carbon Dioxide Level. |
| Author |
Van Brave, C. H. M. ;
|
| CORP Author |
Texas A and M Univ., College Station. Water Resources Inst. |
| Year Published |
1972 |
| Report Number |
TR-42; OWRR-A-013-TEX; 12391,; A-013-TEX(1) |
| Stock Number |
PB-211 281 |
| Additional Subjects |
( Plant growth ;
Carbon dioxide) ;
( Transpiration ;
Plant growth) ;
( Carbon dioxide ;
Transpiration) ;
Plant physiology ;
Water conservation ;
Mathematical models ;
Computer programs ;
Photosynthesis ;
Humidity ;
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB-211 281 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
115p |
| Abstract |
The validity and practical implications are discussed of the proposition that CO2 enrichment of the leaf environment enhances plant growth and, simultaneously, decreases plant water use. A theoretical analysis of the water and carbon dioxide balance of plant leaves was made in the form of a computer program based upon known physiological facts. It predicts significant increases in water use efficiency by plants as CO2 is enriched, the size of the increase depending upon the external conditions. Experimental tests were conducted in an environmental simulator with stands of soybean, pepper and southern pea plants. The predictions of the model were substantially verified, with CO2 concentrations ranging from normal to six-fold normal. Although CO2 is obviously an ideal antitranspirant, the efficacy of its release in open stands is doubtful in view of plausible economic factors. But, in enclosures this would be a different matter, and for such situations a scientific basis is given for engineering and systems analysis. |
| NTIS Title Notes |
Technical rept.. |
| PUB Date Free Form |
Jun 72, |
| Category Codes |
6C; 57C |
| NTIS Prices |
PC A06/MF A01 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
326531436 |
| Origin |
NTIS |
| Type |
CAT |
