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פותח על ידי קלירמאש פתרונות בע"מ -
Growth and yield studies of potato development in a semi-arid region. 3. Effect of water stress and amounts of nitrogen top dressing on physiological indices and on tuber yield and quality of several cultivars
Year:
1985
Source of publication :
Potato Research
Authors :
סוסנוסקי, מיכה מרסל
;
.
שמשי, דניאל
;
.
Volume :
28
Co-Authors:
Shimshi, D., Dept. of Environmental Physiology and Irrigation, Agricultural Research Organization, Gilat Experiment Station, Negev, 85-280, Israel
Susnoschi, M., Dept. of Vegetable Crops, Agricultural Research Organization, Gilat Experiment Station, Negev, 85-280, Israel
Facilitators :
From page:
177
To page:
191
(
Total pages:
15
)
Abstract:
The response of five potato cultivars (Alpha, Cardinal, Désirée, Spunta and Up-to-Date) to a range of amounts of irrigation nitrogen top dressing (N.t.) in a rainless region was studied by means of the line-source sprinkler method. The irrigation-to-evaporation ratio, Kp, ranged from 0.14 to 1.27 and N.t. from 12 kg/ha to 201 kg/ha, respectively. In all cultivars, the yield increased linearly up to Kp=1.0; at higher ratios there was a yield decline in all cultivars except for Cardinal, in which the yield function flattened off. Spunta was the highest yielding cultivar (16t/ha) in the dry range (Kp=0.14; N.t.=12 kg/ha). Désirée was the highest yielding cultivar (64 t/ha) in the wet range (Kp=1.0; N.t.=201 kg/ha), and Alpha was the lowest yielding cultivar in both the dry and wet range (9 and 46 t/ha, respectively). Leaf permeability, leaf water potential and photosynthesis rate decreased, and tuber dry matter percentage increased with decreasing Kp: these indices also varied with plant age, and among cultivars. Yields were adversely affected when soil water potential at the 30-cm depth dropped below -0.4 bar. © 1985 Kluwer Academic Publishers.
Note:
Related Files :
irrigation response function
water-nitrogen top dressing relations
עוד תגיות
תוכן קשור
More details
DOI :
10.1007/BF02357443
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
23790
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:02
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Scientific Publication
Growth and yield studies of potato development in a semi-arid region. 3. Effect of water stress and amounts of nitrogen top dressing on physiological indices and on tuber yield and quality of several cultivars
28
Shimshi, D., Dept. of Environmental Physiology and Irrigation, Agricultural Research Organization, Gilat Experiment Station, Negev, 85-280, Israel
Susnoschi, M., Dept. of Vegetable Crops, Agricultural Research Organization, Gilat Experiment Station, Negev, 85-280, Israel
Growth and yield studies of potato development in a semi-arid region. 3. Effect of water stress and amounts of nitrogen top dressing on physiological indices and on tuber yield and quality of several cultivars
The response of five potato cultivars (Alpha, Cardinal, Désirée, Spunta and Up-to-Date) to a range of amounts of irrigation nitrogen top dressing (N.t.) in a rainless region was studied by means of the line-source sprinkler method. The irrigation-to-evaporation ratio, Kp, ranged from 0.14 to 1.27 and N.t. from 12 kg/ha to 201 kg/ha, respectively. In all cultivars, the yield increased linearly up to Kp=1.0; at higher ratios there was a yield decline in all cultivars except for Cardinal, in which the yield function flattened off. Spunta was the highest yielding cultivar (16t/ha) in the dry range (Kp=0.14; N.t.=12 kg/ha). Désirée was the highest yielding cultivar (64 t/ha) in the wet range (Kp=1.0; N.t.=201 kg/ha), and Alpha was the lowest yielding cultivar in both the dry and wet range (9 and 46 t/ha, respectively). Leaf permeability, leaf water potential and photosynthesis rate decreased, and tuber dry matter percentage increased with decreasing Kp: these indices also varied with plant age, and among cultivars. Yields were adversely affected when soil water potential at the 30-cm depth dropped below -0.4 bar. © 1985 Kluwer Academic Publishers.
Scientific Publication
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