IMPACT OF LONG -TERM APPLICATION OF CHEMICAL FERTILIZERS, MANURE AND LIME ON THE PH-VALUE OF BROWN LUVIC SOILS IN NORTH-WESTERN ROMANIA PUBLISHEDGheorghe Ciobanu, Cornelia Ciobanu, Cornel Domuţa, Adrian Vuşcan, Gheorghe Sarca
In Romania was elaborated since 1968 a stationary long term experiments with fertilizers and lime in all the Agricultural Research Stations belongs to Research Institute from Fundulea. The experiments was set up using a unitary scheme for knowing the evolution of soil fertility and the influence of fertilizers and lime rates and combinations on level and quality yield of different crops. The brown luvic soil from North-West part of Romania is a medium soil, provide with the principal nutritive elements, with a weak acid reaction in the ploughing horizon. In this paper are presented the results regarding the influence of fertilizers and lime rates and combinations on pH values of brown luvic soil from North-West part of Romania. Long term fertilization with nitrogen determined the decrease of pH values and the increase of mobile aluminium content up to the phytotoxicity level. Lime application determined the increase of pH values and the decrease of mobile aluminium content obtaining positive effects on yield.
long term experiments; chemical fertilizers; soil reaction