| Main Title |
Effects of Long-Term Ozone Exposure and Soil Moisture Deficit on Growth of a Ladino Clover-Tall Fescue Pasture. |
| Author |
Heagle, A. S. ;
Rebbeck, J. ;
Shafer, S. R. ;
Blum, U. ;
Heck, W. W. ;
|
| CORP Author |
Corvallis Environmental Research Lab., OR. ;North Carolina State Univ. at Raleigh.;Department of Agriculture, Washington, DC. |
| Publisher |
c1988 |
| Year Published |
1988 |
| Report Number |
EPA/600/J-88/512; |
| Stock Number |
PB90-216375 |
| Additional Subjects |
Ozone ;
Soil water ;
Plant growth ;
Forage grasses ;
Acclimatization ;
Yield ;
Field tests ;
Seasonal variations ;
Tolerances(Physiology) ;
Exposure ;
Irrigation ;
Assessments ;
Reprints ;
Trifolium repens ;
Festuca arundinacea
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB90-216375 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
11p |
| Abstract |
Most field studies relating seasonal ozone (O3) exposure to crop yield have been performed in the absence of plant moisture stress. The authors examined the response of a mixture of ladino clover and tall fescue to chronic doses of O3 at two soil-moisture levels over two growing seasons. The soil-moisture treatments, obtained by differential irrigation, were well-watered or water-stressed. A soil-moisture deficit occurred intermittently in water-stressed plots during both seasons. Shoots were harvested when plants reached a height of 20-25 cm. Total forage yield in the water stressed plots was 12-14% less than that in the well-watered plots. Clover was much more sensitive than fescue to O3. The decrease in total forage yield and decreased quality caused by decreased growth of clover suggest a need for ladino clover lines that are tolerant to O3. |
