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Response of tomato plants to N and water applied via a trickle irrigation system: I. Nitrogen
Year:
1982
Source of publication :
Agronomy Journal
Authors :
Bar-Yosef, Bnayahu
;
.
Sagiv, Bijan
;
.
Volume :
74
Co-Authors:

B. Bar‐Yosef  

B. Sagiv

Facilitators :
From page:
633
To page:
637
(
Total pages:
5
)
Abstract:

Despite the widespread use of combined trickle irrigation and fertilization (fertigation) in arid zones, little is known about the efficiency of point source fertigation in general, and about drip irrigation management of tomatoes in particular. The objective of the present work was to study the response of tomato plants grown under trickle irrigation in sand dunes to total and daily N application rates, and to concentrations of N in the irrigation water and in the soil solutions at various physiological stages of growth.

The experiments, carried out at three different locations in Israel, included combinations of several daily N and water application rates and two irrigation intervals.

The total yield (Y, in metric tons/ha) was related to total N application rate (X, in kg/ha) by the regression equation Y = 0.0714X + 35.83. The overall N uptake in the high‐yield treatments was about 30% of the N applied. The low efficiency is attributed partly to excessive N application 140 days from seeding, when the daily demand for N (FN) was small. To obtain the optimum FN values at about 70 and 140 days after seeding (5.2 and 2.2 kg N ha−1day−1), NO3‐N concentration in the soil solution should be 200 and 100 ppm, respectively.

Note:
Related Files :
irrigation
nitrogen
plant nutrition
Solanum lycopersicum
tomato
Trickle irrigation
water
Show More
Related Content
More details
DOI :
10.2134/agronj1982.00021962007400040011x
Article number:
0
Affiliations:
Database:
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
52818
Last updated date:
02/03/2022 17:27
Creation date:
29/12/2020 23:40
Scientific Publication
Response of tomato plants to N and water applied via a trickle irrigation system: I. Nitrogen
74

B. Bar‐Yosef  

B. Sagiv

Response of tomato plants to N and water applied via a trickle irrigation system: I. Nitrogen

Despite the widespread use of combined trickle irrigation and fertilization (fertigation) in arid zones, little is known about the efficiency of point source fertigation in general, and about drip irrigation management of tomatoes in particular. The objective of the present work was to study the response of tomato plants grown under trickle irrigation in sand dunes to total and daily N application rates, and to concentrations of N in the irrigation water and in the soil solutions at various physiological stages of growth.

The experiments, carried out at three different locations in Israel, included combinations of several daily N and water application rates and two irrigation intervals.

The total yield (Y, in metric tons/ha) was related to total N application rate (X, in kg/ha) by the regression equation Y = 0.0714X + 35.83. The overall N uptake in the high‐yield treatments was about 30% of the N applied. The low efficiency is attributed partly to excessive N application 140 days from seeding, when the daily demand for N (FN) was small. To obtain the optimum FN values at about 70 and 140 days after seeding (5.2 and 2.2 kg N ha−1day−1), NO3‐N concentration in the soil solution should be 200 and 100 ppm, respectively.

Scientific Publication
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