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קהילה:
אסיף מאגר המחקר החקלאי
פותח על ידי קלירמאש פתרונות בע"מ -
Fluxes of P and Ca into intact corn roots and their dependence on solution concentration and root age
Year:
1971
Source of publication :
Plant and Soil
Authors :
בר-יוסף, בניהו
;
.
Volume :
35
Co-Authors:
Bar-Yosef, B.
Facilitators :
From page:
589
To page:
600
(
Total pages:
12
)
Abstract:
Fluxes of Ca and P through intact corn roots growing in flowing, well stirred nutrient solutions, were determined. The flux of Ca increased linearily when the Ca concentration in the nutrient solution was raised up to 250 ppm Ca. An increase in the P concentration from 0.02 ppm to 0.4 ppm P resulted in a higher Ca flux at each Ca concentration. A P concentration of about 0.15 ppm was found to be the saturation concentration above which the P flux through the roots increased only slightly. A Ca concentration range of 100 to 200 ppm had no apparent effect on the P flux. The flux through a certain unit of root surface area for both Ca and P dropped to nearly zero after 150 hours of active absorption. It is suggested that this is connected with the decrease in the specific surface area of the root with age, which is proposed to be due to the suberization which was observed microscopically. © 1971 Martinus Nijhoff.
Note:
Related Files :
corn
roots
soil
Zea mays
עוד תגיות
תוכן קשור
More details
DOI :
10.1007/BF01372689
Article number:
0
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
18506
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:22
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Scientific Publication
Fluxes of P and Ca into intact corn roots and their dependence on solution concentration and root age
35
Bar-Yosef, B.
Fluxes of P and Ca into intact corn roots and their dependence on solution concentration and root age
Fluxes of Ca and P through intact corn roots growing in flowing, well stirred nutrient solutions, were determined. The flux of Ca increased linearily when the Ca concentration in the nutrient solution was raised up to 250 ppm Ca. An increase in the P concentration from 0.02 ppm to 0.4 ppm P resulted in a higher Ca flux at each Ca concentration. A P concentration of about 0.15 ppm was found to be the saturation concentration above which the P flux through the roots increased only slightly. A Ca concentration range of 100 to 200 ppm had no apparent effect on the P flux. The flux through a certain unit of root surface area for both Ca and P dropped to nearly zero after 150 hours of active absorption. It is suggested that this is connected with the decrease in the specific surface area of the root with age, which is proposed to be due to the suberization which was observed microscopically. © 1971 Martinus Nijhoff.
Scientific Publication
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