Effect of potassium fertilization during fruit development on tomato quality, potassium uptake, water and potassium use efficiency under deficit irrigation regime

Jie Liu, Tiantian Hu, Puyu Feng, Delong Yao, Fan Gao and Xia Hong

Agricultural Water Management, 2021, vol. 250, issue C

Abstract: A pot experiment was conducted to investigate the effect of potassium (K) fertilization on tomato quality, plant K uptake, water and K use efficiency (WUE and KUE) under deficit irrigation regime. During fruit development stage of the first cluster of fruit, irrigation regimes were comprised of three levels, i.e. 80–90% field capacity (θf) (W1), 70–80% θf (W2) and 60–70% θf (W3); and K fertilization rates were also consisted of three different rates, i.e. 0 g K2O kg−1 soil (K1), 0.46 g K2O kg−1 soil (K2) and 0.92 g K2O kg−1 soil (K3). The result showed that deficit irrigation as well as increased K fertilization significantly improved quality of fruit where, soluble sugar, titratable acid and content of vitamin C were positively correlated to K concentration of leaf ([K]leaf), indicating that [K]leaf may have a role to improve fruit quality. The highest plant WUE was observed in W1 plants, which consumed the most water and produced the highest dry mass. K fertilization had no effect on WUE based on biomass, but had positive effect on K concentration and K accumulation in each tissue, hereby increased total K uptake, while decreased KUE.

Keywords: Deficit irrigation; Potassium fertilization; Fruit development; Quality; Tomato (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (7)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0378377421000962
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:agiwat:v:250:y:2021:i:c:s0378377421000962

DOI: 10.1016/j.agwat.2021.106831

Access Statistics for this article

Agricultural Water Management is currently edited by B.E. Clothier, W. Dierickx, J. Oster and D. Wichelns

More articles in Agricultural Water Management from Elsevier
Bibliographic data for series maintained by Catherine Liu ().