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2010, vol. 34, br. 1, str. 46-52
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Praćenje dinamike mineralnog N u zemljištu i usvajanja usevom salate posle primene organskih đubriva
Dynamics of mineral N in soil and dynamics of the N uptake by lettuce yield after application of organic fertilizers
Univerzitet u Novom Sadu, Poljoprivredni fakultet, Departman za ratarstvo i povrtarstvo
Projekat: Projekat Ministarstva nauke Republike Srbije, br. TR 20088
Sažetak
U poljskom ogledu postavljenom na poljoprivrednom gazdinstvu u Kisaču, registrovanom za organsku proizvodnju, tokom 2007. i 2008. godine ispitivan je uticaj primene organskih đubriva na sadržaj mineralnih oblika N u zemljištu, i dinamiku usvajanja N od strane useva salate (Lactuca sativa sub. sp. Secalina). Tretmani ogleda bili su: goveđi stajnjak (ST); guano (G) i tretman bez đubrenja (Ø1). Sadržaj mineralnog N u zemljištu, na parcelama gde su primenjena organska đubriva, od IV termina merenja pa sve do kraja vegetacije, bio je značajno viši od sadržaja na kontrolnom tretmanu, dok razlike između tretmana ST i G, nisu bile statistički značajne u obe godine ispitivanja.
Abstract
In a field trial set up on a farm certified for organic production in Kisač, we studied the effect of the application of different organic fertilizers (OF) on the content of mineral forms of nitrogen (N) in the soil, and dynamics of N uptake by lettuce yield (Lactuca sativa sub. sp. Sekalina). Treatments in field trial were: farmyard manure (ST); guano (G) and treatment without fertilization (Ø1). The content of mineral forms of N in the soil was significantly higher with fertilized treatments when compared to the control for the most part of the vegetation and in both years of research. Differences between the contents of mineral N in the soil between treatments ST and G, were not statistically significant.
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