Original scientific paper
INFLUENCE OF FERTILIZATION WITH FERMENTED BIOSLUDGE ON THE YIELD AND NUTRITIVE VALUE OF ABOVEGROUND MAIZE (ZEA MAYS L.) PHYTOMASS
Eva HANÁČKOVÁ
; Department of Agrochemistry and Plant Nutrition, Faculty of Agrobiology and Food Resources, Slovak Agricultural University in Nitra, Tr. A. Hlinku 2, 949 76 Nitra, Slovak Republic
Pavol SLAMKA
; Department of Agrochemistry and Plant Nutrition, Faculty of Agrobiology and Food Resources, Slovak Agricultural University in Nitra, Tr. A. Hlinku 2, 949 76 Nitra, Slovak Republic
Abstract
Yield and nutritional value of maize for silage in dependance on type, rate and application of organic manures were investigated in a field semi-operational experiment established near the biogas station in the location of Kolíňany in the years 2004 and 2005. The trial results confirmed a statistically high significant effect of weather conditions on the maize aboveground phytomass yield. Under the infavourable weather conditions of the year 2004 a lower yield (28.01 t.ha-1) was achieved in comparison with the year 2005 (48.33 t.ha-1). When 50 t.ha-1 of biosludge was applied in autumn, the highest yield as well as the highest energy value of aboveground maize phytomass expressed in terms of net energy of lactation (NEL = 6.45 MJ.kg-1 DM) and net energy of fattening (NEF = 6.47 MJ.kg-1 DM) were achieved. Spring application of biosludge decreased the content of dry matter in maize by 20.7 %, and increased the content of
crude protein by 13.7 %, crude fibre by 5.5 % and ash by 26.3 % compared to the values achieved at autumn biosludge application. The value of protein truly digested in the small intestine was the highest in treatment fertilized with farm - yard manure with the rate of 40 t. ha-1 (PDIN = 52.33 g.kg-1 DM, PDIE = 77.37 g.kg-1 DM).
Keywords
maize; farm - yard manure; biosludge; yield; energy and protein value
Hrčak ID:
35415
URI
Publication date:
28.11.2008.
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