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Gas exchange, chlorophyll fluorescence, biomass production, water use and yield response of tomato (Solanum lycopersicum) grown under deficit irrigation and varying nitrogen levels.

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Title Gas exchange, chlorophyll fluorescence, biomass production, water use and yield response of tomato (Solanum lycopersicum) grown under deficit irrigation and varying nitrogen levels.
Not Available
 
Creator Anant Bahadur
T. D. Lama
S. N. S. Chaurasia
 
Subject Deficit irrigation, Gas exchange, N level, Tomato, Water use efficiency
 
Description Not Available
A field experiment on irrigation schedulings and nitrogen rates was conducted to study the physiological, growth and yield responses of tomato (Solanum lycopersicum L.) under deficit irrigation and various N levels. Results obtained indicated that irrigation at 10 or 20 days (I1 and I2) interval had significantly higher gas exchange (photosynthesis rate, stomatal conductance and transpiration rate), photochemical efficiency of PS II (Fv/ Fm), RWC, leaf area, chlorophyll content and fruit production over 30 days irrigation interval (I3). Nitrogen application had also significant effects on most of the physiological, growth and yield traits at 45 and 75 DAT, however N at 120 kg/ha had noticed maximum gas exchange, Fv/Fm, leaf area, CCI and fruit production over other two N levels. Interaction of I × N had exhibited significant effect on few parameters such as; photosynthesis rate, stomatal conductance, leaf area and weed growth, particularly at 45 DAT. Biomass production and partitioning in various plant parts were varied significantly, and under moderate water deficit with higher N levels (I2 N1 and I2 N2), an optimum allocation of biomass (less in roots and stems and higher in fruits) was registered. The maximum WUE (14.19 q/ha/cm) was reported with irrigation scheduling at 20 days, besides 36% water savings over I1. For realisation of higher WUE, tomato should be irrigated at 20 days intervals with N application at 120 kg/ha.
Not Available
 
Date 2019-11-25T17:41:20Z
2019-11-25T17:41:20Z
2015-02-01
 
Type Journal
 
Identifier Bahadur Anant, Lama, T. D., and Chaurasia S.N.S. 2015. Gas exchange, chlorophyll fluorescence, biomass production, water use and yield response of tomato (Solanum lycopersicum) grown under deficit irrigation and varying nitrogen levels. Indian Journal of Agricultural Sciences. 85(2): 224-228.ble
0019-5022
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/25390
 
Language English
 
Relation Not Available;
 
Publisher Indian Council of Agricultural Research