Effect of plant extracts and growth regulators on the shelf life of guava (Psidium guajava L.)
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Date
2005
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Publisher
CCSHAU
Abstract
The investigations on “Effect of plant extracts and growth regulators on the
shelf life of guava (Psidium guajava L.)” were carried out during 2003-04 at the
Post-harvest Labortary, Department of Horticuture, CCS Haryana Agricultural
University, Hisar. Various physical and biochemical parameters were studied to know
the efficacy of onion extract, methi seeds extract, GA3 and cytokinin at different
concentrations to improve the storage life of guava cv. Hisar Safeda.
Post-harvest application of onion extract (100%) followed by methi seeds
extract (100%) and onion extract (50%) decreased physiological loss in weight (%) and
rotting (%) during storage. The quality of fruits was also appreciably IMPROVED by
retaining more firmness, TSS, total sugars, reducing sugars and non-reducing sugars.
Post-harvest treatment of GA3 (100 ppm), cytokin (20 ppm) and GA3 (50 ppm)
also decreased physiological loss in weight (%) and rotting (%). The quality of the fruit
was increased. TSS, total sugars, reducing sugars and non-reducing sugars were
increased during storage.
It can be concluded that the storage life and quality of guava fruits can be
improved by onion extract (100%), methi seeds extract (100%), GA3 (100 ppm) and
cytokinin (20 ppm).