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אסיף מאגר המחקר החקלאי
פותח על ידי קלירמאש פתרונות בע"מ -
The uptake of nitrogen, potassium and sodium and their interrelated effects on yield and quality composition of sugar beet
Year:
1968
Authors :
גוטשטיין, יצחק
;
.
Volume :
15
Co-Authors:
Gutstein, Y., Department of Field Crops, The Volcani Institute for Agricultural Research, Rehovot, Israel
Facilitators :
From page:
1
To page:
28
(
Total pages:
28
)
Abstract:
The interrelated effects of nitrogen, potassium and sodium fertilizers on their uptake, and on the yield and chemical composition of the beet plant, were investigated in a "degraded" loess soil during the 1963 season in field and pot experiments. In the pot experiment, potassium and sodium fertilizers were compared in soil and leaf application. The determined responses are represented by surfaces estimated according to the general multiple polynomial regression equation. The nitrogen fertilizer played a decisive role in the uptake of other nutrient elements; it increased considerably the absorption of soil and fertilizer potassium and sodium. It was shown that, as measured by uptake, the beet plant prefers fertilizer to soil potassium. Potassium and sodium exerted a reciprocal suppressive effect on their uptake by the beet plant; however, this function was dependent upon the rate of application of each of the two fertilizers. Sodium, as well as potassium, affected positively the uptake of nitrogen. The optimal rate requirement of nitrogen was shown to be differential for different yield components of the beet. Its effect on quality composition was mostly negative. Concomitant with highly positive yield effects, potassium affected beneficially the quality of the beet, by increasing the sucrose content and by reducing the concentration of amido-N. Potassium application balanced off the negative quality effects of nitrogen. Additional evidence was obtained for the interchangeable functions of potassium and sodium in the beet plant. Evidence for specific functions of sodium in the beet is provided by a) increased yields in conditions of ample or excessive levels of available potassium in the soil; b) cancelling the suppressive yield effects of superoptimal rates of potassium; c) improved water retention capacity in the leaves; d) increased efficiency of transpiration; and e) the effects on the concentration of different nitrogen contituents in the beet jucie. Favorable quality effects may be ascribed to sodium on account of its function in reducing the concentration of amido-N and PCA, and in diverting the nitrogen for increased betaine synthesis. The results of these experiments lead to the conclusion of practical significance that, for maximal production of irrigated sugar beet, the estimation of potassium fertilizer requirement should take into account the content of sodium in the irrigation water. © 1968 Uitgeverij Dr. W. Junk.
Note:
Related Files :
Beta vulgaris (Sugarbeet)
nitrogen
plant nutrition
potassium
sodium
sugar beet
yields / yielding
עוד תגיות
תוכן קשור
More details
DOI :
10.1007/BF01104148
Article number:
0
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
26839
Last updated date:
19/12/2022 13:35
Creation date:
17/04/2018 00:25
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Scientific Publication
The uptake of nitrogen, potassium and sodium and their interrelated effects on yield and quality composition of sugar beet
15
Gutstein, Y., Department of Field Crops, The Volcani Institute for Agricultural Research, Rehovot, Israel
The uptake of nitrogen, potassium and sodium and their interrelated effects on yield and quality composition of sugar beet
The interrelated effects of nitrogen, potassium and sodium fertilizers on their uptake, and on the yield and chemical composition of the beet plant, were investigated in a "degraded" loess soil during the 1963 season in field and pot experiments. In the pot experiment, potassium and sodium fertilizers were compared in soil and leaf application. The determined responses are represented by surfaces estimated according to the general multiple polynomial regression equation. The nitrogen fertilizer played a decisive role in the uptake of other nutrient elements; it increased considerably the absorption of soil and fertilizer potassium and sodium. It was shown that, as measured by uptake, the beet plant prefers fertilizer to soil potassium. Potassium and sodium exerted a reciprocal suppressive effect on their uptake by the beet plant; however, this function was dependent upon the rate of application of each of the two fertilizers. Sodium, as well as potassium, affected positively the uptake of nitrogen. The optimal rate requirement of nitrogen was shown to be differential for different yield components of the beet. Its effect on quality composition was mostly negative. Concomitant with highly positive yield effects, potassium affected beneficially the quality of the beet, by increasing the sucrose content and by reducing the concentration of amido-N. Potassium application balanced off the negative quality effects of nitrogen. Additional evidence was obtained for the interchangeable functions of potassium and sodium in the beet plant. Evidence for specific functions of sodium in the beet is provided by a) increased yields in conditions of ample or excessive levels of available potassium in the soil; b) cancelling the suppressive yield effects of superoptimal rates of potassium; c) improved water retention capacity in the leaves; d) increased efficiency of transpiration; and e) the effects on the concentration of different nitrogen contituents in the beet jucie. Favorable quality effects may be ascribed to sodium on account of its function in reducing the concentration of amido-N and PCA, and in diverting the nitrogen for increased betaine synthesis. The results of these experiments lead to the conclusion of practical significance that, for maximal production of irrigated sugar beet, the estimation of potassium fertilizer requirement should take into account the content of sodium in the irrigation water. © 1968 Uitgeverij Dr. W. Junk.
Scientific Publication
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