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Control efficacy of Ca‐containing foliar fertilizers on bitter pit in bagged ‘Fuji’ apple and effects on the Ca and N contents of apple fruits and leaves.

Authors :
Yu, Xian‐Mei
Wang, Jin‐Zheng
Nie, Pei‐Xian
Xue, Xiao-Min
Wang, Gui‐Ping
An, Miao
Source :
Journal of the Science of Food & Agriculture. Nov2018, Vol. 98 Issue 14, p5435-5443. 9p.
Publication Year :
2018

Abstract

Abstract: BACKGROUND: The preharvest application of Ca‐containing foliar fertilizers can reduce the incidence of bitter pit (BP) in apples and improve fruit quality by increasing the Ca content and decreasing both the N content and the N/Ca ratio in fruits. In this study, we aimed to investigate the control efficacy of Ca‐containing fertilizers on the incidence of BP and their effects on the Ca and N contents in bagged ‘Fuji’ apples by spraying foliar fertilizer containing calcium chloride (CaCl2), calcium nitrate [Ca(NO3)2] or calcium formate [Ca(HCOO)2] at an early stage, five days after full bloom (DAFB) and 40 DAFB, and at a late stage, 80 DAFB and 125 DAFB. RESULTS: The incidences of BP were reduced significantly by 43.2–73.0%, and the efficacy of spraying at an early stage was significantly higher than that of spraying at a late stage. The Ca content of bagged apple fruits increased whereas the N content and N/Ca ratio decreased after spraying Ca‐containing foliar fertilizers; however, the Ca content, N content and N/Ca ratio of apple leaves were differentially influenced. CONCLUSION: Foliar fertilizer containing CaCl2, Ca(NO3)2 or Ca(HCOO)2 can be used at an early stage to control BP in apple and improve the quality of bagged apple fruits. © 2018 Society of Chemical Industry [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00225142
Volume :
98
Issue :
14
Database :
Academic Search Index
Journal :
Journal of the Science of Food & Agriculture
Publication Type :
Academic Journal
Accession number :
132044959
Full Text :
https://doi.org/10.1002/jsfa.9087