Comparison study of cultivated highbush and wild blueberry nutrient status in producing plantings and woodlands, Latvia | Krūmmelleņu un savvaļas melleņu minerālās barošanās nodrošinājuma līmenis ražojošās saimniecībās un Latvijas mežos
2009
Pormale, J., University of Latvia, Salaspils (Latvia). Inst. of Biology | Osvalde, A., University of Latvia, Salaspils (Latvia). Inst. of Biology | Nollendorfs, V., University of Latvia, Salaspils (Latvia). Inst. of Biology
Highbush blueberries (Vaccinium corymbosum L.) grown on more than 170 ha have become an important horticultural commodity in Latvia with a high market demand. To realize the full potential of this modern high yielding crop, balanced plant nutrition is vitally important to ensure adequate growth and fruit production. The main aim of this study was to find out the actual mineral nutrition status of cultivated highbush and wild blueberries (Vaccinium myrtillus L.) in Latvia as well as to evaluate the peculiarities of blueberry mineral nutrition in producing plantings and native woodlands. About 100 (soil and plant) samples were collected from different blueberry producing sites and 5 woodlands during the summer of 2008. Plant leaf analysis and soil testing were used to evaluate the blueberries supply with all of the biogenous elements (N, P, K, Ca, Mg, S, Fe, Mn, Zn, Cu, Mo, B). Our results suggest that only about 40% of the plant leaf nutrient indices and soil tests were in the optimal range. Insufficient levels of N, P, Ca, Mo, B and increased concentrations of Mn in highbush blueberry leaves were the main problems. In spite of the high heterogeneity of the element concentrations in soils, deficiency of N, Zn, Mo, B was found in the vast majority of samples analyzed. Although forest soils were characterized as an acid nutrient poor environment, wild blueberries showed especially high efficiency of K, Ca, Mg, Fe, and Mn accumulation in their leaves. The present investigation forms the basis for the development of scientific knowledge based blueberry fertilization practices in Latvia.
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