Agronomy Science, przyrodniczy lublin, czasopisma up, czasopisma uniwersytet przyrodniczy lublin
The research was conducted in 2002–2004 at the Experimental Station “Swojec” belonging to Wrocław University of Environmental and Life Sciences. The two factor field experiment was designed for the studies. The main factor was organic fertilization: stubble catch crop grown after plowed down straw from the previous crop and with no straw. The subplot was fall-spring tillage and fertilization with manure: three treatments were plowed before winter, the fourth one was plowed in the springtime and the fifth one was under conservation tillage (stubble catch crop was left on the surface until spring and before sowing the rotary harrow was used). Fertilization with manure was applied to variants number 1 and 2: 20 and 10 t∙ha-1 respectively. Fertilization of sugar beet with stubble catch crop grown after plowed down straw generally improved the content of macroelements in the soil. The reduction of manure rate from 20 to 10 t∙ha-1 did not significantly decrease the content of basic nutrients. Under lack of manure the use of conservation tillage more beneficially affects the soil fertility than tillage with plow.
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