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פותח על ידי קלירמאש פתרונות בע"מ -
Uptake of phosphorus by plants growing under field conditions: II. computed and experimental results for corn plants
Year:
1972
Authors :
בר-יוסף, בניהו
;
.
ברסלר, אשל
;
.
כפכפי, עוזי
;
.
Volume :
36
Co-Authors:

B. BAR-YOSEF,
E. BRESLER,
U. KAFKAFi

Facilitators :
From page:
789
To page:
794
(
Total pages:
6
)
Abstract:

Fluxes of P uptake by corn (Zea mays L.) plants growing in the field under high and low P fertilization levels, were both predicted by an uptake model, and obtained experimentally in the field by a new technique. The computed fluxes were averaged over a period of 1 week to give values of 4.8 X 10~5 and 1.7 X 10~5 pg P cm~2 sec"1 at the high and low P levels in the soil, respectively. These values were lower than the experimental weekly average fluxes which, at the critical growth period (between the 5th and 7th weeks), equaled about 6.8 X 10~5 and 2.5 X 10~5 /j.g P cm ~ 2 sec"1 , correspondingly. The deviation of the real conditions prevailing in the field from those assumed in the model tended, qualitatively, to explain the discrepancy. It is shown that the computed flux of f uptake is more sensitive to variations in the soil than in the plant parameters.

Note:
Related Files :
flux of P uptake
Numerical solution
root surface area
עוד תגיות
תוכן קשור
More details
DOI :
Article number:
0
Affiliations:
Database:
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
52805
Last updated date:
02/03/2022 17:27
Creation date:
29/12/2020 19:39
Scientific Publication
Uptake of phosphorus by plants growing under field conditions: II. computed and experimental results for corn plants
36

B. BAR-YOSEF,
E. BRESLER,
U. KAFKAFi

Uptake of phosphorus by plants growing under field conditions: II. computed and experimental results for corn plants

Fluxes of P uptake by corn (Zea mays L.) plants growing in the field under high and low P fertilization levels, were both predicted by an uptake model, and obtained experimentally in the field by a new technique. The computed fluxes were averaged over a period of 1 week to give values of 4.8 X 10~5 and 1.7 X 10~5 pg P cm~2 sec"1 at the high and low P levels in the soil, respectively. These values were lower than the experimental weekly average fluxes which, at the critical growth period (between the 5th and 7th weeks), equaled about 6.8 X 10~5 and 2.5 X 10~5 /j.g P cm ~ 2 sec"1 , correspondingly. The deviation of the real conditions prevailing in the field from those assumed in the model tended, qualitatively, to explain the discrepancy. It is shown that the computed flux of f uptake is more sensitive to variations in the soil than in the plant parameters.

Scientific Publication
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