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Abstract - Issue Mar 2015, 36 (2) Back
nstantaneous and historical temperature effects on a-pinene
Effect
of summer pruning and CPPU on yield and quality of kiwi fruit (Actinidia
deliciosa)
K.K. Pramanick1,
Poonam Kashyap1,2*, D.K. Kishore1 and Y.P. Sharma1
1Indian
Agricultural Research Institute, Regional Station, Amartara Cottage, Shimla
-171 004, India
2Project
Directorate for Farming System Research, Modipuram, Meerut - 250 110, India
*Corresponding
Authors Email : pakhihorti@gmail.com
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Publication Data
Paper received:
21 October 2013
Revised received:
03 March 2014
Accepted:
05 May 2014
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Abstract
A
field experiment was conducted on bearing vines of kiwifruit cv. Abbott to
find the effect of CPPU (N-(2-chloro-4-pyridyl)-N-phenylurea) and summer
pruning on fruit yield, fruit size and quality. CPPU? greatly stimulated
fruit growth indicating that it can be a powerful tool for improving
kiwifruit cropping. Application of CPPU at 10 ppm concentration was done by
dipping the fruits for 10 sec in the aqueous solution of compound at petal
fall and 30 days after petal fall. CPPU applied fruits increased size by
20-70 g over control. Summer pruning along with CPPU application proved to be
more effective in obtaining fruits of high grades with increased fruit weight
(95.37 g fruit-1) and high quality. Summer pruning, when done by
pinching1/5th at Petal Fall stage + CPPU dipping?? (10 ml l-1)
and pinching 1/5th continued till harvest, at one month interval
resulted in increased fruit yield (54.80 kg vine-1), high TSS
(17.6 0 Brix), high total sugar (9.85%), advanced ripening by one week and
reduced flesh firmness. ?
Key
words
CPPU,
Fruit yield, Kiwifruit, Summer pruning
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