Productivity of crop rotation: sugarbeet-spring wheat-winter barley under different organic fertilizer treatments and increasing nitrogen rates
2005
Zimny, L. | Gandecki, R. | Waclawowicz, R. | Sniady, R.,Akademia Rolnicza, Wroclaw (Poland). Katedra Ogolnej Uprawy Roli i Roslin
In the years 2000-04 a two factor field experiment on black earth soil of valuation class IIIa was conducted in Wroclaw (Poland). The experiment was designed according to split-block method in four replications. The effects of organic fertilizers (30 t manure/ha, 10 t vermicompost/ha, or stubble crop cultivation following the incorporation of barley straw, application of 50 kg N/ha, and incorporation of sugarbeet leaves and spring wheat straw) and N fertilizer rate (0, 50, 100, 150 or 200 kg/ha before sugarbeet and spring wheat, and 0, 45, 90, 135 or 180 kg/ha before winter barley) on the productivity of a sugarbeet-spring wheat-winter barley rotation were studied. The performance of the crop rotation was significantly affected by the N fertilizer rate only. Significant increases in the yield of sugarbeet roots and yields of intercrops were obtained with 135 and 150 kg N/ha. The grain yields of spring wheat and winter barley were increased by 90 or 100 kg N/ha. Intensification of nitrogen rates was conducive to increase of cereals yields but the increase was insignificant. Application of varying organic fertilization did not significantly affect the yielding of cultivated plants. An insignificantly higher yield of sugarbeet, barley and wheat was noticed after ploughing down stubble crop and side products of the yields of forecrops than after using manure or vermicompost
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