The Ratio of Elements Uptake from the Soil by Yellow Weed (Boreava Orientalis Jaub And Spach.) Which Causes Problems for Barley Cultivated Under Arid Conditions
Study was conducted in order to determine the amount of elements uptake from the soil by different densities of yellow weed depending on its competition against barley in barley cultivated areas in Ardıçlı Village (arid) of Central Selcuklu Konya in 2007. At the harvesting time of barley, yellow weed samples in all the plots were extracted with their roots and analysed following the necessary pre-treatments. As a consequence, when the yellow weed numbers are 1, 3 and 6 number /m2, the amounts of N uptake from the soil by yellow weed were determined to be 32.09 – 146.67 – 311.07 g/da; P , 15.57 - 72.56 -144.28 g/da; K , 76.94 - 375.94 – 961.21 g/da, respectively. As the result of the analysis performed, depending on the numbers of yellow weed in the plots were observed statistically significant differences between the amounts of N, P, K, Ca, Mg, Mn, Fe, Zn and Mo uptake from soil by yellow weed at P<0.05 level.
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