Effect of 15N fertilisation on the yielding and phosphorus and sulphur contents in east-ern galega (Galega orientalis Lam.) and soil
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| Authors: | Barbara Symanowicz1, Stanisław Kalembasa1, Dawid Jaremko1, Wojciech Skorupka1 1Faculty of Soil Science and Agricultural Chemistry University of Life Sciences and Humanities in Siedlce ul. B. Prusa 14, 08-110 Siedlce |
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| Abstract : | A three-year field experiment was conducted in the experimental site belonging to the Siedlce University of Natural Sciences and Humanities. Nitrogen 15N at 10.3% enrichment was applied in the form of 15(NH4)2SO4 at the amount of 1.66 g per 1 m2 in early spring. In each year of the study three cuts of the test plant were harvested at the stage of budding. The total content of P and S in the plant and soil was determined by emission spectrophotometr with inductively coupled plasma (ICP – AES). The uptake of phosphorus and sulphur with the yield of the test plant was then calculated. Under the conditions of 15N application there was a reduction in the yield and in phosphorus content in the biomass of successive cuts of eastern galega and in the subsequent years of the study, and a reduction of phosphorus and sulphur uptake with the yield. The sulphur content increased in the consecutive cuts with respect to the first cut. In the subsequent years of the study decreased levels of phosphorus and sulphur were assayed in the soil. |
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| Keywords : | fertilisation 15N, eastern galega, yield, phosphorus, sulphur, uptake of P and S in the galega yield, soil | ||||||||
| Language : | Polish | ||||||||