Processing Tomato Yield and Fruit Quality Improved with Potassium Fertigation
By T. Hartz, P. Johnstone, D. Francis, E. Miyao. 2005
106 citations recorded by the source corpus.
The effect of K fertigation through subsurface irrigation lines on processing tomato (Lycopersicon esculentum Mill.) fruit yield and quality was evaluated in four field trials in California from 2002-04. Fields had exchangeable soil K between 0.48 to 0.85 cmol.kg -1 , with high exchangeable Mg (10.6 to 13.7 cmol.kg -1 ) and a history of yellow shoulder (YS, a fruit color disorder) occurrence. K treatments evaluated included seasonal amount applied (0 to 800 kg.ha -1 ), fertigation method (continuous versus weekly), and timing (early, mid or late season); foliar K treatments were also included in the 2002 trial. In two fields total and marketable fruit yield were significantly increased by K fertigation, and fruit color improvements were observed in all trials. Among color parameters improved by K fertigation were YS incidence, blended color, and L*, chroma, and hue of the shoulder region of fruit. K fertigation did not affect fruit soluble solids concentration. Yield increased only with fertigation treatments initiated during early fruit set. The effects of fertigation method and rate were inconsistent. Foliar K application was ineffective in increasing either fruit yield or quality.
Subfields: Plant Science, Soil Science
View Paper: https://www.semanticscholar.org/paper/14e4e1aa003934945794c0583bfa99714d59665b
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
- P. Perkins-Veazie
- W. White
- Yang Xu
- Shanshan Li
- H. Taber
- Steven Rodermel
Citations in the corpus
- Enhancement of Tomato Fruit Lycopene by Potassium Is Cultivar Dependent (2008, background): “In further experimentation with K fertilization of processing tomatoes, Hartz et al. (2005) showed that cultivar selection was the major factor associated with fruit color disorders, and a similar effect with fresh market tomatoes may also exist.”