EFFECT OF SPRAYING SILICON AND SELENIUM ON GROWTH, VINE NUTRITIONAL STATUS, BERRY SETTING, YIELD AND BERRIES QUALITY OF SUPERIOR GRAPEVINES GROWN UNDER SANDY SOIL CONDITIONS II-THE EFFECT ON BERRY SETTING, YIELD AND BERRIES QUALITY

Document Type : Research articles.

Authors

1 Hort. Dept., Fac. of Agric., Minia Univ., Egypt.

2 Viticulture Res. Dept., Hort. Res. Instit. ARC, Giza, Egypt

Abstract

This study was carried out during 2014 and 2015 seasons to examine
the effect of spraying potassium silicate at 0.125 to 0.5% and/or selenium at
50 to 200 ppm on yield and berries quality of Superior grapevines grown in
sandy soil.
Berry setting, yield and both physical and chemical parameters of
quality were remarkably improved due to using potassium silicate at 0.125 to
0.5% and/or selenium at 50 to 200 ppm compared to the control treatment.
No considerable effect was observed on the investigated characteristics due to
increasing potassium silicate concentrations from 0.25 to 0.5% and selenium
from 100 to 200 ppm.
The best results with regard to yield and berries quality of Superior
grapevines grown under sandy soil conditions were observed due to treating
the vines three times with a mixture of potassium silicate at 0.25% and
selenium at 100 ppm.

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