Land Suitability Evaluation for Blueberry Crop by Determining the Qualitative Properties of the Identified Soil Type Related with the Antioxidant Capacity of Fruits
Keywords:bio-chemical compounds; correlations; land evaluation; polyphenols; seasonal variety
Organic and inorganic forms of nitrogen and carbon were measured in order to determine soil fertility. The amount of total nitrogen ranged between 0.849 g/kg and 1.755 g/kg in the samples gathered from soil in modified state and between 0.961 k/kg and 2.427 g/kg in the samples collected from the soil in natural state. Based on these results it could be concluded that in comparing with the previous year, plants used the soil nutrients for their development. The activities of different enzymes were measured as well. Nitrate reductase activity was also higher in samples collected from soil in modified state (from bilon) than in the samples collected near plantations (control samples) and the values ranged between 0.055 ± 0.012 μmol·h-1·g-1 and 1.018 ± 0.117 μmol·h-1·g-1 in samples from soil in natural state and between 0.013 ± 0.002 μmol·h-1·g-1 and 0.447 ± 0.083 μmol·h-1·g-1 in bilons. Using GIS techniques of spatial analysis to determine the exact type of soil from each studied blueberry plantation from the Northwest Region of Development and also based on the soil bio-chemical analyses, it was possible to achieve a qualitative characterization of the territory, taking into account the requirements of blueberries for cultivation and to achieve a land suitability for blueberry crop. Combining laboratory approach, consisting from soil bio-chemical and physico-chemical analyses and chemical analyses of blueberry fruits, with the techniques used in order to determine the soil type and land suitability, the study conducted in the Northwest Region of Development identified the best conditions for blueberry crop, based on the qualitative characterization of land.
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