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Influence of chemicals and girdling on tree physiology and fruiting of litchi

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Title Influence of chemicals and girdling on tree physiology and fruiting of litchi
Not Available
 
Creator Sanjay Kumar Singh
Pragya Kumari
Sanjay Vyas
Vishal Nath
 
Subject Litchi chinensis Sonn., bio-regulators, girdling, yield
 
Description Not Available
The present study was conducted to evaluate the effect of various chemicals (paclobutrazol, KNO3, Prohexadione Ca, salicylic acid, KH2PO4, and spermidine) and girdling on plant growth, tree physiology, fruit yield, and quality in litchi cv. China. Experimental results revealed the least increase in the tree height (1.58%) after spraying of KNO3. Girdling significantly increased the tree girth (3.55 %) and trunk cross-sectional area (7.29%). All the treated trees had 20-50% more leaf relative water content (RWC) than that of the control trees. Paclobutrazol (PBZ) application and a spray of KH2PO4 recorded the maximum value of the stomatal conductance (gs) and transpiration rate (E) at the flower bud differentiation stage. The untreated trees had low stomatal conductance (gs), transpiration rate (E), and internal CO2 concentration (Ci). The transpiration rate was observed to be higher during flowering than during the FBD stage. PBZ application showed the highest free proline and total phenol contents in leaves. The water use efficiency (WUE), mesophyll efficiency (ME) and carboxylation efficiency (CE) was found to be high during flowering compared to the flower bud differentiation (FBD) stage. The Pro-Ca showed the maximum WUE followed by the application of KNO3. Highest number of floral panicles (3656) and yield(2427 fruits /tree & 55.42 kg/tree) were recorded with the spray of KNO3 followed by girdling. The colour intensity of fruits was improved a lot in terms of hue, value, and chroma.
ICAR New Delhi
 
Date 2022-03-29T10:14:51Z
2022-03-29T10:14:51Z
2021-09-30
 
Type Research Paper
 
Identifier Singh, Sanjay Kumar; Kumari, Pragya; Vyas, S. and Nath, Vishal (2021). Influence of chemicals and girdling on tree physiology and fruiting of litchi. Indian J. Hort. 78(3):261-267
0972-8538
http://krishi.icar.gov.in/jspui/handle/123456789/70863
 
Language English
 
Relation Not Available;
 
Publisher Indian Academy of Horticultural Sciences, New Delhi