Effects of different irrigation programs and nitrogen levels on nitrogen concentration, uptake and utilisation in processing tomatoes (Lycopersicum esculentum)


Erdal I., ERTEK A., SENYIGIT U., YILMAZ H. I.

AUSTRALIAN JOURNAL OF EXPERIMENTAL AGRICULTURE, vol.46, no.12, pp.1653-1660, 2006 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 46 Issue: 12
  • Publication Date: 2006
  • Doi Number: 10.1071/ea04252
  • Journal Name: AUSTRALIAN JOURNAL OF EXPERIMENTAL AGRICULTURE
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.1653-1660

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 (I-5, 5 days; I-10, 10 days) and 3 plant-pan coefficients (K(cp)0.50, 0.50; K(cp)0.75, 0.75; K(cp)1.00, 1.00). Nitrogen treatments consisted of 3 N levels (N-0, 0 kg/ha; N-80, 80 kg/ha; N-160, 160 kg/ha). The irrigation interval, plant- pan coefficient and N fertiliser rate affected all parameters examined; however, theNfertiliser 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 N-160, I-10 and K(cp)0.75 and K(cp)1.00 treatments. Results show that the N-160, I-10 and K(cp)0.75 treatments can be used for increasing plant N uptake and the benefit rate from fertiliser.