Abstract
A study was conducted to investigate the effect of different irrigation programs and nitrogen (N) levels on N concentration, uptake and utilisation by the processing tomato (Lycopersicum esculentum). The amount of water used was determined based on a screened class-A pan. Irrigation treatments consisted of 2 different irrigation intervals (I5, 5 days; I10, 10 days) and 3 plant-pan coefficients (Kcp0.50, 0.50; Kcp0.75, 0.75; Kcp1.00, 1.00). Nitrogen treatments consisted of 3 N levels (N0, 0 kg/ha; N80, 80 kg/ha; N160, 160 kg/ha). The irrigation interval, plant-pan coefficient and N fertiliser rate affected all parameters examined; however, the N fertiliser rate had the greatest impact. Nitrogen applications increased N concentrations in the leaf, tomato and vegetative biomass. Plant total N uptake and benefit rate from fertiliser was highest with the N160, I10 and Kcp0.75 and Kcp1.00 treatments. Results show that the N160, I10 and Kcp0.75 treatments can be used for increasing plant N uptake and the benefit rate from fertiliser.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
