FRUIT SET OF PEAR FRUITS ‘GARBER’ IN THE DIFFERENT FRUITING ORGANS REGARDING QUADRANT, PRUNING, GIRDLING, BENDING AND CHEMICAL TREATMENTS

The low fruiting is one of the main problems related to the pear production in Brazil.
In this context, this work aimed to determine the fruit set of pear fruits ‘Garber’ in the different fruiting organs regarding the North, South, West and East quadrant by using physical and chemical treatments.
Sixteen-year-old trees were conducted at spacing of 6 × 8 m.
The treatments were: 1) control; 2) summer short pruning; 3) branches bending + summer long pruning; 4) winter branches bending; 5) winter pruning; 6) girdling; 7) 560 ml 100 L^-1 of H₂O of Promalina® (benzyladenine + gibberellins AG₄+AG₇) or 8) 200 ml 100 L^-1 of H₂O of Biozyme*TF. After 55 days, the fruits fixed in the different fruiting organs as lamburde, brindille, brindille couronnee and bourse were counted.
The girdling treatment done in the winter time showed the highest effective fruit set rates independent of fruiting organs.
The use of Promalina^® and winter bending were not efficient to the pear tree ‘Garber’ in this experiment conditions.
The effective fruit set was similar at all the orientation quadrants in the region of Pelotas-RS, Brazil.
The fruiting organs of the pear trees ‘Garber’ that showed the highest effective fruit set rates were brindille couronnee and bourses.
Lamburde was the fruiting organ with the lowest effective fruit set rates independent of treatment.

VIII International Symposium on Temperate Zone Fruits in the Tropics and Subtropics

J.B. Silva, A. Gazolla Neto, D. Pazzin, J.C. Fachinello, C.L. Giacobbo

Pyrus communis, bioregulators, cultural practices

https://doi.org/10.17660/ActaHortic.2010.872.39