Please use this identifier to cite or link to this item: http://krishikosh.egranth.ac.in/handle/1/5810084307
Authors: KOLHAR, AYEESHYA. H
Advisor: S. L, Jagadeesh
Other: Hadimani, H. P
S.M, Prasanna
Y.S, Mahesh
Vijaymahantesh
Title: STUDIES ON FIELD APPLICATION OF SALICYLIC ACID, AZOXYSTROBIN AND CYCOCEL ON SHELF LIFE OF ONION CV. ARKA KALYAN
Publisher: UNIVERSITY OF HORTICULTURAL SCIENCES, BAGALKOT
Language: en_US
Type: Thesis
Pages: 174
Agrotags: null
Keywords: ONION CV. ARKA KALYAN
Abstract: The present investigation entitled “Studies on field application of salicylic acid, azoxystrobin and cycocel on shelf life of onion cv. Arka Kalyan” was conducted in the Department of Post Harvest Technology, COH, Bagalkot, Karnataka during the year 2016-2017. Onion cv. Arka Kalyan was imposed with seedling dip and pre-harvest foliar sprays at different time intervals at 60 and 90 days after transplanting (DAT). After harvesting bulbs were cured properly and stored under ambient condition. Various physiological and physico-chemical changes were recorded at monthly intervals for 4 months. Treatments showed significant differences for yield, number of bulbs per kg and bulb diameter. Foliar spray of salicylic acid (SA) @ 2 mM and azoxystrobin @ 0.1% at 60 + 90 DAT followed by CCC 2500 ppm foliar spray @ 90 DAT (T11) significantly reduced the physiological loss in weight (PLW) (11.62%), and bulbs of the treatment T3 (Seedling dip in SA @ 2 mM + SA @ 2 mM 60 + 90 DAT) exhibited least rate of respiration (15.29 ml CO2/Kg/h). Minimum sprouting was observed in the treatment T12 (Seedling dip in salicylic acid @ 2 mM + SA @ 2 mM, azoxystrobin @ 0.1% at 60 + 90 DAT and CCC 2500 ppm at 90 DAT) (2.26%) and bulbs of the treatment T5 (SA @ 2 mM and azoxystrobin @ 0.1% at 60 + 90 DAT) exhibit least rotting (1.87%). Reduced incidence of black mould was noticed in the treatment T12 (1.63%) and maximum per cent marketable were obtained in the treatment T11 (85.54%). The Maximum mean dry matter (18.38%) and minimum per cent moisture (81.60%) was noticed in treatment T4 (Pre-harvest spray of azoxystrobin @ 0.1% at 60 + 90 DAT). Bulbs of the treatment T11 were found to be more firmner (123.38 N), contained more total solubule solids (15.14 °B) and bulbs scored maximum for overall acceptability(7.90 out of 9) Pyruvic acid, indicating pungency was noted to be maximum in T6 (Seedling dip SA @ 2 mM + SA @ 2 mM and azoxystrobin @ 0.1% at 60 + 90 DAT) (8.71 μmoles/g) and the same treatment recorded maximum total phenol (13.73 mg/100g). In conclusion, foliar application of SA (2 mM), azoxystrobin (0.1%) at 60 + 90 DAT and CCC (2500 ppm) at 90 DAT was effective in maintaining quality and shelf life of onion.
Subject: Post Harvest Technology
Theme: STUDIES ON FIELD APPLICATION OF SALICYLIC ACID, AZOXYSTROBIN AND CYCOCEL ON SHELF LIFE OF ONION CV. ARKA KALYAN
Research Problem: Theses
These Type: M.Sc
Issue Date: 2017-06
Appears in Collections:Theses

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