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Research on growth dynamics of fruit, shoots and mineral elements in olive leaves in ecological conditions of Istria
Ivo Miljković
Sažetak
Research on the growth dynamics of shoots, fruit and mineral elements in leaves during vegetation was carried out on four year old olive trees of the Leccino and Picholine varieties. The trees were grown in red soil in the olive grove Červar near Poreč. It was established that the shoot growth followed an elongated sigmoidal curve. The intensive shoot growth continued to the end of August and comp¬letely finished at the end of September. Both varieties achieved good average growth of one year old shoots. The fruit growth followed a double elongated sigmoidal curve. It was the biggest and uniform in the first and second phase of growth until September 15, when 50% of the mature volume was achieved. From October 1 to 15 the growth slowed down when the endocarp lignified after which the growth was intensive and uniform. The high quality of olive oil in Istria should probably, among others, be attributed to uniform fruit growth in the time of most intensive oil accumulation. With such growth nutrients, particularly oil and its ingredients, gradually accumulate in the fruit. The dynamics of mineral elements shows that the concentration of nitrogen and calcium gradually increases from the beginning to the end of vegetation while that of potassium falls. The concentration of phosphorus, magnesium and boron in the leaves of both varieties is uniform, during vegetation. The supply of nitrogen, phosphorus, potassium, calcium and boron is good while that of magnesium is poor to moderate.
Ključne riječi
olive; shoots growth; fruit growth; foliar diagnosis; dynamics of mineral elements
Hrčak ID:
3647
URI
Datum izdavanja:
5.3.2006.
Posjeta: 2.736 *