Variability of selected chemical properties eutric brown soil on flysch in the area of olive tree

V diplomskem delu smo raziskovali prostorsko variabilnost izbranih kemičnih lastnosti tal v okolici izbranega oljčnega drevesa. Ugotavljali smo vsebnost in variabilnost dostopnega fosforja, kalija, organske snovi in pH tal. Vzorci tal so bili odvzeti v oljčniku na Škofijah na različni oddaljenosti od debla (od 1 do 4 m) in na štirih različnih globinah (0⠒10 cm, 10⠒20 cm, 20⠒30 cm in 30⠒40 cm). Rezultati so pokazali, da je najbolj variabilna vsebnost rastlinam dostopnega fosforja in kalija. Najmanj se spreminjata vsebnost organske snovi in pH. Vsebnost fosforja je bila med 4,45 in 8,67 mg/100 g tal. Vsebnost kalija je znašala med 17,50 in 24,90 mg/100 g tal. Ugotovili smo, da se vsebnosti fosforja in kalija po globini zmanjšujeta. Variabilnost fosforja je bila večja kot variabilnost kalija. Vsebnost organske snovi je bila med 2,1 in 2,5 %. Njena vsebnost se po globini ni bistveno spreminjala. Reakcija tal je bila med 7,14 in 7,27 in njena vrednost se po globini ni zmanjševala.In this thesis, we researched the spatial variability of selected chemical properties of soil in the area of selected olive tree. We specified the content and variability of available phosphorus, potassium, organic matter and soil pH. Soil samples were taken in the olive grove in Škofije at different distances from the trunk (from 1 to 4 m) and at four different depths (0⠒10 cm, 10⠒20 cm, 20⠒30 cm, 30⠒40 cm). The results showed that the most variable were the contents of phosphorus and potassium available to plants. Organic matter content and pH changed the least. The phosphorus content ranged from 4.45 to 8.67 mg/100 g soil. The potassium content ranged between 17.50 and 24.90 mg/100 g soil. We found out that the levels of pottasium and phosphorus decrease with depth with both properties. The variability of phosphorus was greater than of potassium. The organic matter content was between 2.1 and 2.5 %. Its content did not vary significantly with depth. The soil reaction ranged from 7.14 to 7.27 and did not decrease with depth