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• Relaco: a product to reduce water shoot formation around pruning wounds in pome fruit trees

  30-31.

  L. Csiszár

  M. Újvári

  T. Panea

  Views:

  114

  Larger cuts made during the winter pruning of pome fruit orchards a number of serious problems: the wounds serve as entrances for several branch-infecting pathogens, the numerous water shoots formed around the cut edges consume assimilates, shade the developing fruits, make the canopy dense, reduce the effectiveness of the pest management and cause extra work during next seasons pruning work. These problems can be eliminated by using proper wound protectants, like Relaco, a new Romanian wound protectant to cover larger pruning cuts of apple, pear and quince trees.

  The treaments by Relaco resulted in a significant decrease in both the number and total length of water shoots formed around the cut egdes.

• Phyl-Gold: a product to diminish russeting of 'Golden Delicious' apples

  131-133.

  L. Csiszár

  T. Bubán

  F. Takács

  M. Benedictyné Rátz

  L. Oláh

  Views:

  139

  Producing high quality apples in mature trees of the cv. 'Golden Delicious' is rather difficult because of the russeting of it's fruits, especially in seasons of high relative humidity and/or wetness.

  Earlier experiments proved the possibility to decrease russeting by treatments of GA₄.₇ during a period after petal fall.

  Phyl-Gold, a product of Phylaxia Co. (ai. 10 g1^-1 GA₄.₇) was applied to inhibit russet formation in fruit skin of 'Golden Delicious' apples. Four consecutive sprays were carried out (with 10 ppm a.i.) in weekly intervals, starting at petal fall and tank-mixed with the current pesticides of the plant protection program.

  Due to the GA₄.₇ application the russet formation decreased at a rate of economical importance. As for the side-effects of treatments, fruit set was reduced slightly in trees treated, however, there was no consequent influence on return bloom.