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eLABa objektas: "Naujų ekologiškų trąšų įtaka maisto medžiagų migracijai ir transformacijai sistemoje dirvožemis–vanduo", 2009,D:20090615:114310-69385 |
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Česinienė, Laima - Magistro baigiamojo darbo vadovas
Sabienė, Nomeda - Magistro baigiamojo darbo recenzentas
Pekarskas, Juozas - Magistro baigiamojo darbo recenzentas
Lietuvos žemės ūkio universitetas - Mokslinį laipsnį teikianti institucija
Effect of new organic fertilizers on migration of nutritional matters and transformations in system soil-water
Object of the study - lysimetric site established on educational farm at Lithuanian University of Agriculture. |
Aim of the study - To determine and assess effect of new organic fertilizers (Ragų geluonių miltai, Ragų drožlės and Provita) on migration of nutritional matters in the system plants-soil-water. |
Methods of the study: Taking samples of water, soil and herbage. Determining quality indexes of samples, result analysis and assessment. |
Results of the study: Application of different organic fertilizers in the system plants-soil-water results in differences in migration of quality indexes. After application of organic fertilizers Ragų geluonių miltai, Ragų drožlės, Provita maximum nitrate, nitrite concentrations and distinct electrical conductivity value were determined in lysimetric water. |
Maximum amounts of general nitrogen, ammonium nitrogen, active phosphate phosphorus and value of distinct electrical conductivity were found in lysimetric water in 6 months time after application of Ragų geluonių miltai N180 the greatest amount of nitrate nitrogen was found after Ragų drožlės N270 has been applied. |
In lysimetric herbage the greatest amount of general nitrogen was found after application of Ragų geluonių miltai N90 and N180. |
Quality indexes of water, soil and plants determined allow predicting washing out of fertilizers into ground waters. |
Raktažodžiai: lysimeter, water, soil, fertilizers, washing out |