Asian Pear Experiment

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Effect of Pruninig, Strapping, Dormancy Breaking Chemical and Irrigation on Asian Pear (Pyrus pyrifolia L.) Grown Under Eastern Pleateau of India
ICAR-RCER , Research Center, Ranchi, Jharkhand, India-834010

Abstract: Economic yield of Asian pear(Pyrus pyrifolia L.) growing in subtropical –sub humid region of Ranchi can be obtained by adopting some cultural practices like girdling ,pruning of current season growth up to 50 % and there by application of flowering induction hormone thio-urea ( 5%)in different treatments combinations. The experiments were conducted during 2006-2007 and 2013-1014 at ICAR-RCER, Research Center, and Ranchi, India. In the first experiment
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This area is situated 620 m above mean sea level (msl) and at 230 25’ N latitude and 850 20’ East longitude experiencing an average annual rainfall of 110-140 cm. Soil is acidic and pH range from 5.0-6.5, which is ideal for pear cultivation. Girdling with pear with wire (200 gaze) just after harvesting in August was performed. 50 % pruning of current season’s growth was done at dormant season during 2nd week of December. Spraying was done on 21 January 2007. The experiment was laid out in a randomized block design with four replications. The treatments were T1=Girdling + Pruning + Thiourea (5 %), T2 =Girdling +Non Prunning + Thiourea (5%), T3=No Girdling+ Prunning+ thiourea (5%), T4= Thiourea (5%), + Nonprunning and Girdling and T5 =Control. Data were taken on flowering, fruit set percentage and on fruit quality. Flowering per cen was calculated by number of flower buds over 100 total buds on a shoot. Initial fruit set was calculated after three weeks of flowering. Final fruit set percentage of replicated trees was studied after 60 days of fruit set and calculated by the following…show more content…
A close perusal of the table found that that the maximum fruit size of 236.66 gm was found in pruning and thiourea (5%) treatment under non girdling condition the maximum flowering percent 61.07 % and yield (20.64 kg/plant) were also observed from this treatments. However, treatment combination of girdling pruning and application of thiourea resulted in 51.52 % flowering and fruit yield of 13.13 kg/plant due to drastic reduction of branches due to pruning (50 % of new shoot which give flower in the next season. But girdling was done in the base of the 3-4 years branches which did not lose any flowering spur resulted in the maximum yield of this particular treatment with was at par with the pruning and thiourea application pruning induces the maximum bud burst and thiourea not only induce flowering but also helped in fruit set and thereby yield(T3). T1 did not perform well due to girdling which was hampered the source sink balance in fruit production processes. As fruit quality point of view T1 exhibited maximum TSS of 12.2 0B and total sugar of 6.7% as yield was less and fruit size was

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