Strawberry plants of Oso Grande variety has been treated with three types
of foliar fertilizers containing (Nitrogen, Boron, Manganese) individually and
combined, in addition to treating some of them using urea as soil fertilizer.
Some plants were untreated to be used as a control. Three concentrations were
used.
This study was conducted during the seasons 1995 and 1996 at Ninevah
Horticulture Station- Iraq. On Halwani and Kamali grape cultivars. This study
included four levels of foliar application of Fe-EDTA at concentrations of 0, 50,
100 and 200 ppm ir
on, and soil compound fertilization with NPK (30 kg N + 30
kg P2O5 + 30kg K2O/ Donum) on the two abore mentioned cultivars, and the
interaction among the three studied factors (cultivars, Fe and NPK), was also
evaluated.
The results showed that 200ppm of iron caused a significant increase in the
percentage of pollen viability, Pollen grains germination, length of Pollen tube,
setting of berries, ovules fertilization, leaf chlorophyll content, single leaf area,
shoot leaf area, and total leaf area per vine and leaf area per cluster. The same
results were obtained by using NPK fertilization. Halwani grape CV. Was
significantly superior over on the Kamali grape CV. in pollen viabilits, pollen
germination, length of pollen tube, leaf chlorophyll content and the single leaf
area, While the Kamali grape CV. gave the highest shoot leaf area, total leaf
area per vine and leaf area per cluster. The interaction among iron, NPK and
cultivars reveded that the best treatment was 200 ppm iron with NPK, which
gave the best results concerning flowering, setting and vegetative growth for
both the cultivars.