Control of non-infectious chlorosis of grapes in Crimea

Abstract

The article presents the results of studies, conducted in soil-climatic conditions
of the Crimea in 2017–2019, on the control of non-infectious chlorosis of wine
grape varieties by using iron-containing mineral fertilizers. The use of Omex
Micromax, Sequestrene Turbo and Chelate Fe preparations for foliar dressing
of ‘Pinot Noir’ and ‘Aligote’ vines led to a significant decrease in the expansion
and progression of chlorosis, on average by 10.5 and 5%, respectively. During
the studies and considering the high level of development of non-infectious
chlorosis, the positive effect of mineral fertilizers on the productivity of grape
plants was proved: four-time use of preparation Omex Micromax (‘Pinot Noir’
variety) increased the crop yield of grapes by 10.9%; two-time application of
Sequestrene Turbo fertilizer (‘Aligote’ variety) - by 12.9% in the conditions of
the south-west part of Crimea. In the conditions of the South Coast of Crimea
foliar treatments with micronutrient fertilizer Chelate Fe in phenological phases
“after flowering” and “berries pea-size” contributed to an increase in the yield
of ‘Aligote’ grape variety by 7.4%.