RESEARCHES REGARDING THE FERTILIZATION EFFECT UPON THE MAIZE YIELD IN IRRIGATED CROPPING SYSTEM PUBLISHEDIoanis Rousis, Ioan Borcean
The crops were done in Greece, in the region Aitoloakarnania, on an alluvial soil having a pH of 7,4 and a humus content of 2,10%. The researched hybrids were Lazaro and Varenne, cultivated on three fertilization levels and three densities. The crop results showed that, by increasing the nitrogen doses from N 100 to N 200 on a constant base of P 100 K 100 , the yield increased with 9%. By increasing the doses to N 300 the yield increased with 12%. The hybrid Varenne distinguished itself from the other analyzed hybrid, its yield result being 20% higher than the one of the Lazaro hybrid. Among the studied plant densities to remark was the one of 70.000 plants/ha, a variant in which the yield was 13% higher than the variant in which the plant density was of 60.000 plants/ha.
maize grains; irrigation; hybrids; fertilization