Published in Scientific Papers. Series B, Horticulture, Vol. LXVII, Issue 1
Written by Stanislava ATANASOVA, Lubov PLESHKUTSA, Maria GEORGIEVA, Diyan GEORGIEV, Evlogi MARKOV
The present study follows the dynamics of nutrient elements in the soil of a raspberry plantation during the period of blossoming and fruit harvesting. The scientific experiment was conducted in the period 2018-2020 in a collection plantation of the Research Institute of Mountain Stockbreeding and Agriculture in Troyan with four raspberry genotypes, such as Willamette, Meeker, Samodiva and Magdalena. The soils of the region are gray forest, moderately eroded, low in humus and prone to waterlogging.The content of basic nutrients (nitrogen, phosphorus, potassium), humus and pH in the 0-20 cm and 20-40 cm soil layers was analyzed. The results show that the highest nitrogen content was registered the surface soil layer with 89.77 mg/kg during the blossoming phenophase in 2019.The amount of phosphorus varied widely 2.60-6.20 mg/100 g. The highest potassium content (28.66 mg/100g) was found again in the surface soil layer during blossoming of the 2020 raspberry plants.
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