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אסיף מאגר המחקר החקלאי
פותח על ידי קלירמאש פתרונות בע"מ -
Sodium Bicarbonate Extraction to Estimate Nitrogen, Phosphorus, and Potassium Availability in Soils
Year:
1978
Authors :
אקירי, בצלאל
;
.
בר-יוסף, בניהו
;
.
Volume :
42
Co-Authors:
Facilitators :
From page:
319
To page:
323
(
Total pages:
5
)
Abstract:

The extractability of NO3‐N, P, and K from five calcareous soils differing in physical and chemical characteristics by NaHCO3 (0.5M, pH 8.5) was studied under laboratory conditions. The extracted amounts of the three ions were related to time since their application to the soils, to the equilibration period of the soils with the extractants, to the concentration of the ions in the soils, and to the clay content of the soils. After about 70 days in the soil, the extractability of each ion at a given application level was independent of time. The recovery percentage of P and K as a function of the applied amounts of these elements depended mainly on the clay content of the soils, while NO3‐N recovery was independent of the factors studied. Linear relationships were obtained between NaHCO3‐and NH4OAc‐extracted K, and NaHCO3‐ and KCl‐extracted NO3‐N. The slopes for NO3‐N were 45° for all soils, but were specific for each soil in the case of K.

Note:
Related Files :
Recovery
soil
עוד תגיות
תוכן קשור
More details
DOI :
10.2136/sssaj1978.03615995004200020024x
Article number:
0
Affiliations:
Database:
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
52808
Last updated date:
02/03/2022 17:27
Creation date:
29/12/2020 22:58
Scientific Publication
Sodium Bicarbonate Extraction to Estimate Nitrogen, Phosphorus, and Potassium Availability in Soils
42
Sodium Bicarbonate Extraction to Estimate Nitrogen, Phosphorus, and Potassium Availability in Soils

The extractability of NO3‐N, P, and K from five calcareous soils differing in physical and chemical characteristics by NaHCO3 (0.5M, pH 8.5) was studied under laboratory conditions. The extracted amounts of the three ions were related to time since their application to the soils, to the equilibration period of the soils with the extractants, to the concentration of the ions in the soils, and to the clay content of the soils. After about 70 days in the soil, the extractability of each ion at a given application level was independent of time. The recovery percentage of P and K as a function of the applied amounts of these elements depended mainly on the clay content of the soils, while NO3‐N recovery was independent of the factors studied. Linear relationships were obtained between NaHCO3‐and NH4OAc‐extracted K, and NaHCO3‐ and KCl‐extracted NO3‐N. The slopes for NO3‐N were 45° for all soils, but were specific for each soil in the case of K.

Scientific Publication
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