Articles
THE EFFECT OF FOLIAR FERTILIZATION WITH POTASSIUM AND MAGNESIUM ON FRUIT QUALITY IN PLUMS (PRUNUS DOMESTICA L.): PRELIMINARY RESULTS
Article number
874_11
Pages
91 – 98
Language
English
Abstract
Experiments with foliar fertilization in plums have been performed in Western Norway.
In one experiment possible effects of extra magnesium, potassium and the combination of both magnesium and potassium were compared to control trees given a standard foliar fertilization programme.
In the other experiment the standard foliar fertilization programme was compared to control trees given soil fertilization only.
Yield and fruit size as well as major fruit quality factors were registered.
Leaves and fruit were analysed for major nutrients.
No strong effects of foliar application with magnesium and potassium on fruit quality were observed.
The treatments did not affect the content of major nutrients in leaves and fruit to such an extent that significant effects on fruit quality would be expected.
The foliar fertilization programme tended to delayed maturation of the fruit as the fruit were greener and with less blush colour, firmer and had lower content of soluble solids and higher content of titratable acidity.
The changes in separate quality factors were, however, not statistically significant.
The foliar fertilized trees tended to have higher content of nitrogen in the leaves and lower content of the other major nutrients.
In one experiment possible effects of extra magnesium, potassium and the combination of both magnesium and potassium were compared to control trees given a standard foliar fertilization programme.
In the other experiment the standard foliar fertilization programme was compared to control trees given soil fertilization only.
Yield and fruit size as well as major fruit quality factors were registered.
Leaves and fruit were analysed for major nutrients.
No strong effects of foliar application with magnesium and potassium on fruit quality were observed.
The treatments did not affect the content of major nutrients in leaves and fruit to such an extent that significant effects on fruit quality would be expected.
The foliar fertilization programme tended to delayed maturation of the fruit as the fruit were greener and with less blush colour, firmer and had lower content of soluble solids and higher content of titratable acidity.
The changes in separate quality factors were, however, not statistically significant.
The foliar fertilized trees tended to have higher content of nitrogen in the leaves and lower content of the other major nutrients.
Authors
E. Vangdal, S.B. Flatland, I.K. Mehl
Keywords
calcium, fruit quality, leaf analysis, nitrogen
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