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STUDIES ON THE EFFECT OF PLANT GROWTH REGULATORS ON FRUIT RETENTION, FRUIT DROP, YIELD, RIPENING AND PHYSICO-CHEMICAL COMPOSITION OF SAPOTA (Manilkara achras Mill.) cv. CRICKET BALL UNDER AGRO-CLIMATIC CONDITION OF CHHATTISGARH PLAINS.

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Title STUDIES ON THE EFFECT OF PLANT GROWTH REGULATORS ON FRUIT RETENTION, FRUIT DROP, YIELD, RIPENING AND PHYSICO-CHEMICAL COMPOSITION OF SAPOTA (Manilkara achras Mill.) cv. CRICKET BALL UNDER AGRO-CLIMATIC CONDITION OF CHHATTISGARH PLAINS.
 
Creator Panigrahi, Hemant Kumar
 
Contributor Singh, Dr. Prabhakar
 
Subject fruits, genetic processes, biological development, auxins, developmental stages, plant growth substances, acidity, sapota, biological phenomena, planting
 
Description An experiment was conducted at the Horticulture Research Farm, Department of
Horticulture, College of Agriculture, IGKV, Raipur (C.G.) during the years 2007-08 and
2008-09 employing Randomized Block Design having ten treatments replicates three
times. The treatment consisted ten different levels of plant growth regulators ~~izC.,o ntrol
(To), Gibberellic acid 50 pprn (TI), Gibberellic acid 100 pprn (T?),G ibberellic acid 150
pprn (T3). Naphthalene acetic acid 200 ppm (T4), Naphthalene acetic acid 300 pprn (TS),
Naphthalene acetic acid 400 pprn (Tb), Ethrel 500 pprn (T,), Ethrel 1000 pprn (Ts)an d
Ethrel 1500 pprn (Tg).
The experiment was conducted on 10 years old trees of sapota cv. Cricket Ball
with foliar spray of different concentrations of plant growth regulators applied at 50 per
cent flowering and pea stage of hit development.
Amongst different concentrations of plant growth regulators, naphthalene acetic
acid 200 pprn followed by gibberellic acid 100 pprn and naphthalene acetic acid 400 ppm
was found more to control the fruit drop and increased the fruit retention during
whole investigation.
far as ripening advancement characters is concerned, length of harvest period
was significantly reduced by the application of ethrel 1000 PPm and 1500 PPm followed
by other treatments, Ethre] treated plants comes early to harvest and length of
harvests was reduced as compared to control.
As regard yield, the treatment NAA 200 ppm, when applied at 50 per cent
flowering and pea stage of fruit development produced significantly more number of
hits as well as yield per tree as compared to control plants.
Physical parameter of tiuit viz., average fruit weight, average hit diameter, pulp
weight, as well as fruit volume were also increased considerably with the treatment 200
ppm NAA, whereas a reduction in number of seeds, seed weight and peel weight was
observed by the application of same treatment as compared to water spray (control).
The quality of hit in terms of total soluble solids, reducing, non- reducing, total
sugar and ascorbic acid content was proved to be best showing a higher status with the
treatments NAA 200 ppm (T4),fo llowed by GA3 100 ppm (T2) and NAA 300 ppm (Ts)
while the acidity of hit decreased by the application of same treatment.
 
Date 2016-02-09T12:07:02Z
2016-02-09T12:07:02Z
2009
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/64237
 
Language en
 
Format application/pdf
 
Publisher Indira Gandhi Krishi Vishwavidyalaya, Raipur